The work introduces a method to quantify potential impact of climate change on cultural ecosystem services in forests. The technique of Hesitant Fuzzy Linguistic Term Set is applied to face with the uncertainty due to climate change as well as subjective opinion of forest experts. Two forest management scenario (current practices as well as climate change-oriented silviculture) are investigated for different time horizons. Results highlight the increasing uncertainty on climate change impact evaluation related to longer time horizons. Potential losses connected to current cultural ecosystem services provision are quantified from spatial as well as economic viewpoint. The method is tested for an illustrative example in the Tuscany region - central Italy.
{"title":"Uncertainty assessment in climate change scenarios: a methodological proposal for management of forest ecosystem services","authors":"S. Sacchelli, Jacopo Bernetti, Augusto Marinelli","doi":"10.12899/ASR-1802","DOIUrl":"https://doi.org/10.12899/ASR-1802","url":null,"abstract":"The work introduces a method to quantify potential impact of climate change on cultural ecosystem services in forests. The technique of Hesitant Fuzzy Linguistic Term Set is applied to face with the uncertainty due to climate change as well as subjective opinion of forest experts. Two forest management scenario (current practices as well as climate change-oriented silviculture) are investigated for different time horizons. Results highlight the increasing uncertainty on climate change impact evaluation related to longer time horizons. Potential losses connected to current cultural ecosystem services provision are quantified from spatial as well as economic viewpoint. The method is tested for an illustrative example in the Tuscany region - central Italy.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"43 1","pages":"23-34"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48979998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Iranmanesh, H. Sohrabi, K. Sagheb‐Talebi, S. Hosseini, A. H. S. Kouchi
Investigating a tree’s biomass can provide basic information about forest carbon stock. The Biomass Expansion Factor (BEF) is a variable for estimating carbon stock of forests. The aim of this study was to analyse the Above Ground Biomass (AGB) allocation, developing the BEF and carbon stock for two vegetation forms of Brant’s Oak ( Quercus brantii Lindl.) based on forest inventory data. BEF is defined as the ratio of AGB to crown volume variables. The study data were taken from 30 trees that include 16 individual trees with single stem and 14 coppice shoots located in West-Iran. The trees selected were felled and separated into different components including: bole, main branches, lateral branches, twigs and leaves. The fresh weight of the trees was obtained with a portable hanging scale and several samples were taken from each tree component. The results of this study showed significant differences between component biomass proportions of the two vegetation forms of Brant’s Oak trees and determined average biomass and carbon content of the forms studied. We also conclude that BEF of Brant’s Oak could be improved by applying crown variables. According to the results, BEFs are tree-size dependent variables. Finally, this study indicates that age-dependent BEFs cannot be applied to conditions where stand development deviates from the conditions that in which the BEFs were developed.
{"title":"Biomass Expansion Factors (BEFs) and Carbon Stock for Brant's Oak (Quercus brantii Lindl.) Forests in West-Iran","authors":"Y. Iranmanesh, H. Sohrabi, K. Sagheb‐Talebi, S. Hosseini, A. H. S. Kouchi","doi":"10.12899/ASR-1808","DOIUrl":"https://doi.org/10.12899/ASR-1808","url":null,"abstract":"Investigating a tree’s biomass can provide basic information about forest carbon stock. The Biomass Expansion Factor (BEF) is a variable for estimating carbon stock of forests. The aim of this study was to analyse the Above Ground Biomass (AGB) allocation, developing the BEF and carbon stock for two vegetation forms of Brant’s Oak ( Quercus brantii Lindl.) based on forest inventory data. BEF is defined as the ratio of AGB to crown volume variables. The study data were taken from 30 trees that include 16 individual trees with single stem and 14 coppice shoots located in West-Iran. The trees selected were felled and separated into different components including: bole, main branches, lateral branches, twigs and leaves. The fresh weight of the trees was obtained with a portable hanging scale and several samples were taken from each tree component. The results of this study showed significant differences between component biomass proportions of the two vegetation forms of Brant’s Oak trees and determined average biomass and carbon content of the forms studied. We also conclude that BEF of Brant’s Oak could be improved by applying crown variables. According to the results, BEFs are tree-size dependent variables. Finally, this study indicates that age-dependent BEFs cannot be applied to conditions where stand development deviates from the conditions that in which the BEFs were developed.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"43 1","pages":"15-22"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45718775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Understanding people’s perceptions and preferences towards forest stand characteristics can bring many benefits to forest managers in the short term. This study aims to identify and compare people’s perception and preferences of forest stand characteristics in Trentino province (Italy) and Rakhiv region (Ukraine). These regions were chosen as study areas for two main reasons: both are in mountain areas and local communities are strictly dependent on the forest resource. Data were collected through a questionnaire administered to a sample of local people. The collected data were statistically analysed to highlight the preferred type of forests related to different stand characteristics. The results of comparative analysis confirmed the importance of socio-demographic characteristics in shaping respondents’ preferences. The results show that respondents in both case studies prefer mixed forests with a random distribution of trees with different diameter sizes. However, respondents from Trentino province prefer open forests, while respondents from Rakhiv region prefer closed one. The present study increased the level of knowledge about people's preferences in Italy and Ukraine for different forest stand characteristics. This information can be used by decision makers (forest managers and planners) to improve the recreational attractiveness of forest stands.
{"title":"Comparison between people's perceptions and preferences towards forest stand characteristics in Italy and Ukraine.","authors":"O. Pelyukh, A. Paletto, L. Zahvoyska","doi":"10.12899/ASR-1786","DOIUrl":"https://doi.org/10.12899/ASR-1786","url":null,"abstract":"Understanding people’s perceptions and preferences towards forest stand characteristics can bring many benefits to forest managers in the short term. This study aims to identify and compare people’s perception and preferences of forest stand characteristics in Trentino province (Italy) and Rakhiv region (Ukraine). These regions were chosen as study areas for two main reasons: both are in mountain areas and local communities are strictly dependent on the forest resource. Data were collected through a questionnaire administered to a sample of local people. The collected data were statistically analysed to highlight the preferred type of forests related to different stand characteristics. The results of comparative analysis confirmed the importance of socio-demographic characteristics in shaping respondents’ preferences. The results show that respondents in both case studies prefer mixed forests with a random distribution of trees with different diameter sizes. However, respondents from Trentino province prefer open forests, while respondents from Rakhiv region prefer closed one. The present study increased the level of knowledge about people's preferences in Italy and Ukraine for different forest stand characteristics. This information can be used by decision makers (forest managers and planners) to improve the recreational attractiveness of forest stands.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"43 1","pages":"4-14"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42863226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Castro, S. Bergante, D. Sansone, C. Bidini, F. Pelleri
The Woodnat project (H2020) has the goal of identifying the problems that led to poor yields in walnut plantations established under the financial support of EU 2080/92 Regulation and Rural Development Programme, and of improving the market demand for smaller assortments. Some of the plantations monitored in the framework of the project needed thinning: one, an experimental stand with 5 plots with different layouts and species established in 1994, was thinned in spring 2018; in a second one, a polycyclic plantation established in 1996 with common walnut, hybrid poplar and nurse trees, the walnut was thinned in spring 2017. At thinning, sample disks were taken at the base of 5 trees randomly selected at each site for the determination of density and shrinkage in the radial, tangential and longitudinal direction. The average density was 0.52g/cm 3 ; the average tangential shrinkage was 12%, while the average radial shrinkage was 6.7%. There were differences in behaviour between the samples from the two sites, probably due to different vegetal materials, age of the plantations and cultivation models.
{"title":"Common walnut (Juglans regia L.) wood characteristics in two Italian plantations","authors":"G. Castro, S. Bergante, D. Sansone, C. Bidini, F. Pelleri","doi":"10.12899/ASR-1818","DOIUrl":"https://doi.org/10.12899/ASR-1818","url":null,"abstract":"The Woodnat project (H2020) has the goal of identifying the problems that led to poor yields in walnut plantations established under the financial support of EU 2080/92 Regulation and Rural Development Programme, and of improving the market demand for smaller assortments. Some of the plantations monitored in the framework of the project needed thinning: one, an experimental stand with 5 plots with different layouts and species established in 1994, was thinned in spring 2018; in a second one, a polycyclic plantation established in 1996 with common walnut, hybrid poplar and nurse trees, the walnut was thinned in spring 2017. At thinning, sample disks were taken at the base of 5 trees randomly selected at each site for the determination of density and shrinkage in the radial, tangential and longitudinal direction. The average density was 0.52g/cm 3 ; the average tangential shrinkage was 12%, while the average radial shrinkage was 6.7%. There were differences in behaviour between the samples from the two sites, probably due to different vegetal materials, age of the plantations and cultivation models.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"43 1","pages":"35-40"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49386431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tree rings are among the best sources of proxy data for reconstructing past climatic records. In this study we explore for the first time what type of climatic signals can be reconstructed from stone pine ( Pinus pinea L.) based on tree-rings from central Italy (Roman coast). Samples from 112 stone pine trees from stands with different age classes were collected at two locations, Castel Fusano and Castelporziano. In determining the particular target variable for climate reconstruction we explored a wide range of climatic signals (from monthly to multiple year scale) for correlations with tree ring chronologies produced using a variety of detrending methods. We reconstructed short term (autumn-early winter) and long term (3 years precipitation) signals during the 150 years of available data using the “classical” detrending method but also methods preserving their low frequency variability (ABD and RCS) within the chronologies. By setting the best multiple year precipitation drivers at an annual scale and applying a simple percentile threshold approach, we identified the wettest and driest climatic events. The best accuracy in identifying the climatic thresholds was obtained with the ABD method, which also showed the best cross spectral correlation with a long precipitation record. Our reconstruction underpins that since ca. 1850 the Roman coast has experienced its driest conditions in terms of 2-3 year rainfall sums during the last 50 years of the 20 th Century. This finding may be used in the context of identifying the long-term natural variability of the region in relation to climate change as it is expected to affect the Mediterranean.
{"title":"The influence of low-frequency variability on tree-rings based climate reconstruction: a case study from central Italy (Roman coast)","authors":"G. Mazza, D. Sarris","doi":"10.12899/ASR-1599","DOIUrl":"https://doi.org/10.12899/ASR-1599","url":null,"abstract":"Tree rings are among the best sources of proxy data for reconstructing past climatic records. In this study we explore for the first time what type of climatic signals can be reconstructed from stone pine ( Pinus pinea L.) based on tree-rings from central Italy (Roman coast). Samples from 112 stone pine trees from stands with different age classes were collected at two locations, Castel Fusano and Castelporziano. In determining the particular target variable for climate reconstruction we explored a wide range of climatic signals (from monthly to multiple year scale) for correlations with tree ring chronologies produced using a variety of detrending methods. We reconstructed short term (autumn-early winter) and long term (3 years precipitation) signals during the 150 years of available data using the “classical” detrending method but also methods preserving their low frequency variability (ABD and RCS) within the chronologies. By setting the best multiple year precipitation drivers at an annual scale and applying a simple percentile threshold approach, we identified the wettest and driest climatic events. The best accuracy in identifying the climatic thresholds was obtained with the ABD method, which also showed the best cross spectral correlation with a long precipitation record. Our reconstruction underpins that since ca. 1850 the Roman coast has experienced its driest conditions in terms of 2-3 year rainfall sums during the last 50 years of the 20 th Century. This finding may be used in the context of identifying the long-term natural variability of the region in relation to climate change as it is expected to affect the Mediterranean.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"42 1","pages":"68-78"},"PeriodicalIF":0.0,"publicationDate":"2018-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45432219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The increasing availability of remote sensing data at no or low costs can be used as ancillary data in order to spatialize and improve the estimation of forest attributes and without increasing the sampling effort and costs. In this review paper, a description of the main statistical inferential techniques for approaching forest mapping is proposed. This article reviews the most used forest mapping methods based on the sole spatial information as well as techniques exploiting auxiliary information from remotely sensed data. The advantages and drawbacks of each method have been described on the basis of several factors, such as the aims of the investigation and the area under examination. Two main groups were here discussed with model-based methods on one side and model-assisted methods on the other, moving the attention from the model used to interpolate surfaces to the sampling scheme. Model-based methods include kriging, locally weighted regression, K-NN, decision trees and neural networks, while the inverse distance weighting interpolator is presented in the model-assisted group. Reliable and up-to-date information on forest characteristics are mandatory tools for any decisional process. The main input data of such systems are wall-to-wall maps depicting the spatial structures of forests and additional elements. Actually, if the original aim of forest inventories was to estimate harvestable timber amounts, a general interest towards multipurpose surveys is mandatory. Such information must deal with increased costs and more time-consuming procedures.
{"title":"Statistical inferential techniques for approaching forest mapping. A review of methods","authors":"R. M. D. Biase, L. Fattorini, M. Marchi","doi":"10.12899/ASR-1738","DOIUrl":"https://doi.org/10.12899/ASR-1738","url":null,"abstract":"The increasing availability of remote sensing data at no or low costs can be used as ancillary data in order to spatialize and improve the estimation of forest attributes and without increasing the sampling effort and costs. In this review paper, a description of the main statistical inferential techniques for approaching forest mapping is proposed. This article reviews the most used forest mapping methods based on the sole spatial information as well as techniques exploiting auxiliary information from remotely sensed data. The advantages and drawbacks of each method have been described on the basis of several factors, such as the aims of the investigation and the area under examination. Two main groups were here discussed with model-based methods on one side and model-assisted methods on the other, moving the attention from the model used to interpolate surfaces to the sampling scheme. Model-based methods include kriging, locally weighted regression, K-NN, decision trees and neural networks, while the inverse distance weighting interpolator is presented in the model-assisted group. Reliable and up-to-date information on forest characteristics are mandatory tools for any decisional process. The main input data of such systems are wall-to-wall maps depicting the spatial structures of forests and additional elements. Actually, if the original aim of forest inventories was to estimate harvestable timber amounts, a general interest towards multipurpose surveys is mandatory. Such information must deal with increased costs and more time-consuming procedures.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"42 1","pages":"46-58"},"PeriodicalIF":0.0,"publicationDate":"2018-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48806248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Milios, K. Kitikidou, E. Pipinis, Athanasios Stampoulidis, Sofia Akritidou, Pavlos Smiris
In this work, site index curves are developed for Pinus sylvestris in Greece, because of the ecological, social and economic importance of the species. Data from the forest of the Central Rhodope Mountains of north-eastern Greece are used. Thirty one dominant trees, which had the mean height of the 100 tallest trees per hectare were randomly selected and cut, in the 1990s. For each sampled tree a stem analysis was conducted. The selected height-age model for Pinus sylvestris was . The mean annual increment from stem analyses was equal to 0.212 m, corresponding to a base age of 68 years. The height estimation, calculated by the selected model, for a 68 year-old tree, is 23 m (SI23). Using the quadratic model as the guide curve for the development of anamorphic site index curves, we produced two more curves, SI20 and SI27. The main findings of this research are that Pinus sylvestris seems to grow faster in height in the productive site of the present study compared with that of Sweden, its growth is similar to that of the two most productive sites in forests in northwestern Spain, and it seems comparable to the fairly productive sites of northwestern Turkey.
在这项工作中，由于该物种的生态、社会和经济重要性，我们为希腊的西尔维斯特松(Pinus sylvestris)开发了场地指数曲线。数据来自希腊东北部中部罗多彼山脉的森林。20世纪90年代，随机抽取31棵优势树，每公顷最高的100棵树的平均高度进行采伐。对每棵采样树进行茎分析。选取的松林高龄模型为。茎干分析的年平均增量为0.212 m，对应于68岁的基本年龄。所选模型计算的树高估计为23 m (SI23)。利用二次模型作为变形位点指数曲线发展的指导曲线，我们又生成了两条曲线SI20和SI27。本研究的主要发现是，与瑞典的生产地点相比，在本研究的生产地点，sylvestris似乎在高度上生长得更快，它的生长与西班牙西北部森林中两个最多产的地点相似，它似乎与土耳其西北部相当多产的地点相当。
{"title":"Site quality assessment for Pinus sylvestris L. in mixed forests of the central part of \"Rhodope Mountains\" in northeastern Greece","authors":"E. Milios, K. Kitikidou, E. Pipinis, Athanasios Stampoulidis, Sofia Akritidou, Pavlos Smiris","doi":"10.12899/ASR-1614","DOIUrl":"https://doi.org/10.12899/ASR-1614","url":null,"abstract":"In this work, site index curves are developed for Pinus sylvestris in Greece, because of the ecological, social and economic importance of the species. Data from the forest of the Central Rhodope Mountains of north-eastern Greece are used. Thirty one dominant trees, which had the mean height of the 100 tallest trees per hectare were randomly selected and cut, in the 1990s. For each sampled tree a stem analysis was conducted. The selected height-age model for Pinus sylvestris was . The mean annual increment from stem analyses was equal to 0.212 m, corresponding to a base age of 68 years. The height estimation, calculated by the selected model, for a 68 year-old tree, is 23 m (SI23). Using the quadratic model as the guide curve for the development of anamorphic site index curves, we produced two more curves, SI20 and SI27. The main findings of this research are that Pinus sylvestris seems to grow faster in height in the productive site of the present study compared with that of Sweden, its growth is similar to that of the two most productive sites in forests in northwestern Spain, and it seems comparable to the fairly productive sites of northwestern Turkey.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"42 1","pages":"79-84"},"PeriodicalIF":0.0,"publicationDate":"2018-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43464527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chestnut forests were exploited from centuries for several uses and are still nowadays managed under coppice and orchard regimes. The different management practices created a typical mosaic-like structure in landscapes in which alternate different kind of habitat represented by young and mature coppices, old thinned coppices with the physiognomy of high forest, and managed or abandoned orchards. The aim of our study was to evaluate how the different kind of management could affect the hosted biodiversity. We used nocturnal Lepidoptera as indicators, sampled in different woodlots along an altitudinal gradient in the chestnut forests of the Catena Costiera Mountains, southern Italy. We analyzed a published dataset concerning 15 stands subjected to different management regimes. We found that the main variables affecting moth communities distribution were (i) the elevation at which the stands were located and (ii) the time elapsed from the last human intervention. In fact, the stands subjected to recent intervention (young coppices and managed orchards) showed low values of moth richness and abundance, on the contrary the stands subjected to old interventions (mature and old coppices and abandoned orchards) registered a high number of species and individuals, mainly due to their greater structural complexity. Despite the quantitative differences, in woodlots recently managed were collected exclusive species that increased the diversity at a landscape level. Our results underlined the importance to maintain a mosaic-like landscape taking into account also the altitude when interventions are planned in order to improve the ecological sustainability of chestnut forest exploitation.
{"title":"How different management regimes of chestnut forests affect diversity and abundance of moth communities","authors":"S. Greco, M. Infusino, A. Ienco, S. Scalercio","doi":"10.12899/ASR-1503","DOIUrl":"https://doi.org/10.12899/ASR-1503","url":null,"abstract":"Chestnut forests were exploited from centuries for several uses and are still nowadays managed under coppice and orchard regimes. The different management practices created a typical mosaic-like structure in landscapes in which alternate different kind of habitat represented by young and mature coppices, old thinned coppices with the physiognomy of high forest, and managed or abandoned orchards. The aim of our study was to evaluate how the different kind of management could affect the hosted biodiversity. We used nocturnal Lepidoptera as indicators, sampled in different woodlots along an altitudinal gradient in the chestnut forests of the Catena Costiera Mountains, southern Italy. We analyzed a published dataset concerning 15 stands subjected to different management regimes. We found that the main variables affecting moth communities distribution were (i) the elevation at which the stands were located and (ii) the time elapsed from the last human intervention. In fact, the stands subjected to recent intervention (young coppices and managed orchards) showed low values of moth richness and abundance, on the contrary the stands subjected to old interventions (mature and old coppices and abandoned orchards) registered a high number of species and individuals, mainly due to their greater structural complexity. Despite the quantitative differences, in woodlots recently managed were collected exclusive species that increased the diversity at a landscape level. Our results underlined the importance to maintain a mosaic-like landscape taking into account also the altitude when interventions are planned in order to improve the ecological sustainability of chestnut forest exploitation.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"42 1","pages":"59-67"},"PeriodicalIF":0.0,"publicationDate":"2018-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46432852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Manetti, C. Becagli, F. Pelleri, G. Pezzatti, M. Pividori, M. Conedera, Enrico Marcolin
Over the last decades, the abandonment of the traditional management due to many adverse factors caused a general aging of chestnut coppices; this led to an increased mortality of the chestnut stools and a consequent replacement with the entry of other species. Preservation and improvement of the chestnut coppice emphasize the importance of natural regeneration for future forest management: seed regeneration contributes to provide new stools for future coppice generations and promotes a proper development of the stand in terms of specific and structural diversity. In this study, we propose a method for investigating the relationship between density, diversity, development of natural regeneration and possible driving forces in terms of site conditions and stand parameters. At this purpose, a survey based on mixed sampling plots was conducted in different coppice systems (simple coppice, coppice with standards), 4÷8 years after the coppicing: measurements on stools, shoots and standards, as well as seed regeneration were carried out. Chestnut seed regeneration was characterized by taller individuals in simple coppice plots, even though the seedlings were fewer than those in coppice with standards treatment. Canopy cover and amount of standards, density of stools and resprouting shoots negatively influenced the establishment of chestnut seed regeneration: likewise, within the same treatment, plots with greater site index promoted the development of chestnut regeneration. The proposed methods allowed a characterization of the dynamics related to the natural regeneration of classical chestnut coppice systems, identifying the main controlling factors. Among them, factors modifiable by management, such as stand structure and amount of standards, offer forest managers multiple silvicultural options to control seed regeneration processes.
{"title":"Assessing seed regeneration in chestnut coppices: a methodological approach","authors":"M. Manetti, C. Becagli, F. Pelleri, G. Pezzatti, M. Pividori, M. Conedera, Enrico Marcolin","doi":"10.12899/ASR-1670","DOIUrl":"https://doi.org/10.12899/ASR-1670","url":null,"abstract":"Over the last decades, the abandonment of the traditional management due to many adverse factors caused a general aging of chestnut coppices; this led to an increased mortality of the chestnut stools and a consequent replacement with the entry of other species. Preservation and improvement of the chestnut coppice emphasize the importance of natural regeneration for future forest management: seed regeneration contributes to provide new stools for future coppice generations and promotes a proper development of the stand in terms of specific and structural diversity. In this study, we propose a method for investigating the relationship between density, diversity, development of natural regeneration and possible driving forces in terms of site conditions and stand parameters. At this purpose, a survey based on mixed sampling plots was conducted in different coppice systems (simple coppice, coppice with standards), 4÷8 years after the coppicing: measurements on stools, shoots and standards, as well as seed regeneration were carried out. Chestnut seed regeneration was characterized by taller individuals in simple coppice plots, even though the seedlings were fewer than those in coppice with standards treatment. Canopy cover and amount of standards, density of stools and resprouting shoots negatively influenced the establishment of chestnut seed regeneration: likewise, within the same treatment, plots with greater site index promoted the development of chestnut regeneration. The proposed methods allowed a characterization of the dynamics related to the natural regeneration of classical chestnut coppice systems, identifying the main controlling factors. Among them, factors modifiable by management, such as stand structure and amount of standards, offer forest managers multiple silvicultural options to control seed regeneration processes.","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"42 1","pages":"85-94"},"PeriodicalIF":0.0,"publicationDate":"2018-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48767903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Communicating facts, findings and thinking to support evidence-based strategies and decisions","authors":"P. Corona","doi":"10.12899/ASR-1617","DOIUrl":"https://doi.org/10.12899/ASR-1617","url":null,"abstract":"","PeriodicalId":37733,"journal":{"name":"Annals of Silvicultural Research","volume":"42 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47527364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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