Pub Date : 2015-11-30DOI: 10.4172/2168-9776.1000E122
Maiti Rk, Rodríguez Hg
In a forest ecosystem, different trees and shrubs grow together mutually sharing solar radiation and absorption of nutrients from soil horizons. Each species has its own mechanism for coexistence and adaptation in the ecosystem for different moro-physiological traits such leaf traits, branching pattern, leaf pigments, epicuticular wax, leaf nutrients, carbon fixation, protein and other traits. Nevertheless, some species are more efficient in most of these traits over all other species. Therefore, there is a great necessity to select species with highly efficient morpo-physiological traits. In the Forest Science Faculty, Universidad de Nuevo Leon, Mexico , using standard protocols, we are undertaking consistent research inputs in evaluating 37 woody plant species in a woodland forest ecosystem in Northeastern Mexico for a large number of morpho-physiological traits (24 parameters). We have selected few topmost species for these traits. For only 22 traits.
{"title":"Eco-physiologically Highly Efficient Woody Plant Species in Northeastern Mexico","authors":"Maiti Rk, Rodríguez Hg","doi":"10.4172/2168-9776.1000E122","DOIUrl":"https://doi.org/10.4172/2168-9776.1000E122","url":null,"abstract":"In a forest ecosystem, different trees and shrubs grow together mutually sharing solar radiation and absorption of nutrients from soil horizons. Each species has its own mechanism for coexistence and adaptation in the ecosystem for different moro-physiological traits such leaf traits, branching pattern, leaf pigments, epicuticular wax, leaf nutrients, carbon fixation, protein and other traits. Nevertheless, some species are more efficient in most of these traits over all other species. Therefore, there is a great necessity to select species with highly efficient morpo-physiological traits. In the Forest Science Faculty, Universidad de Nuevo Leon, Mexico , using standard protocols, we are undertaking consistent research inputs in evaluating 37 woody plant species in a woodland forest ecosystem in Northeastern Mexico for a large number of morpho-physiological traits (24 parameters). We have selected few topmost species for these traits. For only 22 traits.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"37 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74078615","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}
Pub Date : 2015-11-23DOI: 10.4172/2168-9776.1000160
Ratikanta Maiti, Rodriguez Hgm, A. Kumari, Díaz Jcg
In the context of the ecological perspectives, there is growing attention in the modelling of the morphological structure of the plants for developing the model of the functional processes of plants. The branching pattern functions as solar panel in the capture of solar radiation for the production of biomass and timber. The present study undertaken with the objective of determining the density of branching and types of branching of 30 tree species (trees and shrubs of Tamaulipan thorn scrub such; Helietta parvifolia, Sargentia gregii, Guaiacum angustifolium, Ebenopsis ebano, Harvadia pallens, Condalia hoockeri, Zanthoxylum fagara , Cordia boissieri, Acacia berlandieri, Diospyros texana, Celtis pallida, Forestiera angustifolia, Diospyros palmeri, Parkinsonia texana, Acacia farnesiana, Sideroxylon celastrina, Caesalpinia mexicana, Karwinskia humboldtiana, Croton suaveolens, Amyris texana, Leucaena leucocephala, Ehretia anacua, Gymnosperma glutinosum, Celtis laevigata, Acacia rigidula, Acacia shaffneri, Eysenhardtia polystachya, Prosopis laevigata, Bernardia myricifolia and Leucophyllum frutescens located at the experimental field of Forest Science Faculty of Autonoma de Nuevo en Linares, N.L., Mexico has shown a large variability in the density and branching patterns. The types of branching observed are; monopodial, pseudomonopodial, and sympodial. The branching density observed through animation photography in the field has revealed the presence of three types branching density i.e., high, medium and low density. There existed differences in height, biomass, basal trunk, the angle of the primary and secondary branches. With respect to branching density, a higher number of species were high density (15 species), followed by low density (9) and medium density (5 species). The architecture of the tree is the result of the activity of the apical and axial meristems. This model is a strategy for occupying the space and capture of solar radiation.
{"title":"Perspectives of Branching Pattern and Branching Density in 30 WoodyTrees and Shrubs in Tamulipan Thornscrub, Northeast of Mexico","authors":"Ratikanta Maiti, Rodriguez Hgm, A. Kumari, Díaz Jcg","doi":"10.4172/2168-9776.1000160","DOIUrl":"https://doi.org/10.4172/2168-9776.1000160","url":null,"abstract":"In the context of the \u0000ecological \u0000perspectives, there is growing attention in the modelling of the morphological structure of the plants for developing the model of the functional processes of plants. The branching pattern functions as solar panel in the capture of solar radiation for the production of biomass and timber. The present study undertaken with the objective of determining the density of branching and types of branching of 30 tree species (trees and shrubs of Tamaulipan thorn scrub such; Helietta parvifolia, Sargentia gregii, Guaiacum angustifolium, Ebenopsis ebano, Harvadia pallens, Condalia hoockeri, \u0000Zanthoxylum fagara \u0000, Cordia boissieri, Acacia berlandieri, Diospyros texana, Celtis pallida, Forestiera angustifolia, Diospyros palmeri, Parkinsonia texana, Acacia farnesiana, Sideroxylon celastrina, Caesalpinia mexicana, Karwinskia humboldtiana, Croton suaveolens, Amyris texana, Leucaena leucocephala, Ehretia anacua, Gymnosperma glutinosum, Celtis laevigata, Acacia rigidula, Acacia shaffneri, Eysenhardtia polystachya, Prosopis laevigata, Bernardia myricifolia and Leucophyllum frutescens located at the experimental field of Forest Science Faculty of Autonoma de Nuevo en Linares, N.L., Mexico has shown a large variability in the density and branching patterns. The types of branching observed are; monopodial, pseudomonopodial, and sympodial. The \u0000branching \u0000density observed through animation photography in the field has revealed the presence of three types branching density i.e., high, medium and low density. There existed differences in height, biomass, basal trunk, the angle of the primary and secondary branches. With respect to branching density, a higher number of species were high density (15 species), followed by low density (9) and medium density (5 species). The architecture of the tree is the result of the activity of the apical and axial meristems. This model is a strategy for occupying the space and capture of solar radiation.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"47 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84839350","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}
Pub Date : 2015-11-13DOI: 10.4172/2168-9776.1000E121
Maiti Rk, Rodríguez Hg
{"title":"Wood Anatomy Could Predict the Adaptation of Woody Plants to Environmental Stresses and Quality of Timbers","authors":"Maiti Rk, Rodríguez Hg","doi":"10.4172/2168-9776.1000E121","DOIUrl":"https://doi.org/10.4172/2168-9776.1000E121","url":null,"abstract":"","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"27 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77943210","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}
Pub Date : 2015-10-26DOI: 10.4172/2168-9776.1000E120
Forest Conservation
{"title":"Mystry of Coexistence and Adaptation of Trees in a Forest Ecosystem","authors":"Forest Conservation","doi":"10.4172/2168-9776.1000E120","DOIUrl":"https://doi.org/10.4172/2168-9776.1000E120","url":null,"abstract":"","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"27 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84009685","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}
Pub Date : 2015-09-30DOI: 10.4172/2168-9776.1000156
Fredrick Ojija
A climate change mitigation mechanism, Reducing Emission from Deforestation and forest Degradation (REDD+) is anticipated to affect livelihoods of forest dependent communities. This study was conducted to establish this impact on livelihoods of local people in Rungwe District, Tanzania. Data were collected through questionnaires, group discussions, and interviews from three villages: Syukula, Ilolo and Kibisi. Results showed that households annual income and crop production are higher after REDD+ implementation. The older respondents (>40 years old) considered REDD+ to be important for forest management compared to younger generation (<40 years old) (p < 0.05). Similarly, the older respondents considered wood forest products such as fuelwood, charcoal, timber and poles to be reduced. There was a widespread awareness about REDD+’s objectives among household respondents. Therefore, REDD+ proponents should implement alternative sources of livelihoods to help local people improve their income and reduce dependence on the forest resources and eventually decrease deforestation and forest degradation.
{"title":"Assessment Of Current State And Impact Of REDD+ On Livelihood Of Local People In Rungwe District, Tanzania","authors":"Fredrick Ojija","doi":"10.4172/2168-9776.1000156","DOIUrl":"https://doi.org/10.4172/2168-9776.1000156","url":null,"abstract":"A climate change mitigation mechanism, Reducing Emission from Deforestation and forest Degradation (REDD+) is anticipated to affect livelihoods of forest dependent communities. This study was conducted to establish this impact on livelihoods of local people in Rungwe District, Tanzania. Data were collected through questionnaires, group discussions, and interviews from three villages: Syukula, Ilolo and Kibisi. Results showed that households annual income and crop production are higher after REDD+ implementation. The older respondents (>40 years old) considered REDD+ to be important for forest management compared to younger generation (<40 years old) (p < 0.05). Similarly, the older respondents considered wood forest products such as fuelwood, charcoal, timber and poles to be reduced. There was a widespread awareness about REDD+’s objectives among household respondents. Therefore, REDD+ proponents should implement alternative sources of livelihoods to help local people improve their income and reduce dependence on the forest resources and eventually decrease deforestation and forest degradation.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"76 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2015-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86625649","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}
Pub Date : 2015-09-24DOI: 10.4172/2168-9776.1000154
R. Maiti, Para Ac, Rodríguez Hg, Paloma Sv
The present study was undertaken to determine the variability in fiber cell morphology and its length among wood species of the Tamaulipan thornscrub, northeastern Mexico, used for various uses such as timber for furniture, fence, post, firewood and sources of forage. The results show large variability in fiber cell morphology and fiber cell length. The species have been classified on the basis of its fiber cell morphology and fiber cell length and recommended for their possible utilization for different purposes. This technique can be used in preliminary screening of woody species for its utilization for different purposes. Further studies are needed to confirm.
{"title":"Characterization of wood fibres of scrubs and tree species of the Tamaulipan thornscrub, northeastern Mexico and its possible utilization.","authors":"R. Maiti, Para Ac, Rodríguez Hg, Paloma Sv","doi":"10.4172/2168-9776.1000154","DOIUrl":"https://doi.org/10.4172/2168-9776.1000154","url":null,"abstract":"The present study was undertaken to determine the variability in fiber cell morphology and its length among wood species of the Tamaulipan thornscrub, northeastern Mexico, used for various uses such as timber for furniture, fence, post, firewood and sources of forage. The results show large variability in fiber cell morphology and fiber cell length. The species have been classified on the basis of its fiber cell morphology and fiber cell length and recommended for their possible utilization for different purposes. This technique can be used in preliminary screening of woody species for its utilization for different purposes. Further studies are needed to confirm.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2015-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79930873","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}
Pub Date : 2015-09-17DOI: 10.4172/2168-9776.1000155
A. Bajigo, M. Tadesse
In Gununo watershed at Wolayitta zone, Ethiopia, to determine the variation of woody species structure and composition among agroforestry practices and along elevation gradients in the watershed, this study was conducted. The elevation gradient was stratified in to three transects (upper, middle and lower); and three dominant agroforestry practices (homegarden, parkland and woodlot) were used as treatments. Along each transect line, three agroforestry practices with three replications, a total of 27 sampling points, a complete enumeration of woody species in homegarden which has the average are of 900 m2. Whereas, 50 m × 100 m sampling quadrates in parklands, and 10 m × 10 m sample quadrates for woodlot were used. Number of individuals per plot, DBH, height, crown diameter, and plot area were measured and recorded. The structure and composition of woody species through important value index (IVI), basal area, canopy cover, and diversity indexes determine were determined. A total of 32 woody species belonging to 19 families were recorded in the three agroforestry practices. Fabaceae family 28%, (9 species) was the dominant family of the woody species recorded followed by Euphorbiaceae 13%, (4 species). From these species, 69% (22 species) were indigenous and 31% (10 species) were exotic. From the indigenous species, two were endemic to Ethiopia (Erythrina brucei and Millettia ferruginea). The largest indigenous species, and highest species diversity (20) were recorded in homegardens followed by parklands (11)). Middle elevation was exhibited higher indigenous species, and highest species richness (19): followed by upper (15) and lower elevation. The Shannon, Simpson and evenness diversity indexes were highest in homegardens. Comparing to parkland, homegarden diversity indexes were highest in upper, middle and lower elevations in decreasing order. Attention should be given to the existing agroforestry practices, and the practices must be promoted to lower elevation to enhance biodiversity conservation in agroforestry land use system.
以埃塞俄比亚Wolayitta地区Gununo流域为研究对象，研究了该流域不同农林业方式和高程梯度下木本树种结构和组成的变化。高程梯度划分为上、中、下3个断面;三种主要的农林业方式(园地、公园和林地)作为处理。沿着每条样线，进行3次农林业实践，3次重复，共27个采样点，完整地枚举了平均900 m2的家庭园林木本物种。公园地采用50 m × 100 m样方，林地采用10 m × 10 m样方。测量并记录样地个体数、胸径、高度、冠径和样地面积。通过重要值指数(IVI)、基面积、冠层盖度和多样性指数测定木本物种的结构和组成。3种农林业方法共记录到木本植物32种，隶属于19科。记录的木本植物优势科为豆科28%(9种)，其次为大戟科13%(4种)。其中，本地种22种，占69%，外来种10种，占31%。本地种中有2种为埃塞俄比亚特有种(Erythrina bruei和Millettia ferruginea)。本土物种最多，物种多样性最高的是家庭花园(20)，其次是公园(11)。物种丰富度最高的是中海拔(19)，其次是高海拔(15)和低海拔(15)。Shannon、Simpson和均匀度多样性指数在家庭花园中最高。与公园地相比，高、中、低海拔的园地多样性指数依次递减。应重视现有的农林业实践，并将其推广到低海拔地区，以加强农林业土地利用系统的生物多样性保护。
{"title":"Woody species diversity of traditional agroforestry practices in Gununo watershed in Wolayitta zone, Ethiopia.","authors":"A. Bajigo, M. Tadesse","doi":"10.4172/2168-9776.1000155","DOIUrl":"https://doi.org/10.4172/2168-9776.1000155","url":null,"abstract":"In Gununo watershed at Wolayitta zone, Ethiopia, to determine the variation of woody species structure and composition among agroforestry practices and along elevation gradients in the watershed, this study was conducted. The elevation gradient was stratified in to three transects (upper, middle and lower); and three dominant agroforestry practices (homegarden, parkland and woodlot) were used as treatments. Along each transect line, three agroforestry practices with three replications, a total of 27 sampling points, a complete enumeration of woody species in homegarden which has the average are of 900 m2. Whereas, 50 m × 100 m sampling quadrates in parklands, and 10 m × 10 m sample quadrates for woodlot were used. Number of individuals per plot, DBH, height, crown diameter, and plot area were measured and recorded. The structure and composition of woody species through important value index (IVI), basal area, canopy cover, and diversity indexes determine were determined. A total of 32 woody species belonging to 19 families were recorded in the three agroforestry practices. Fabaceae family 28%, (9 species) was the dominant family of the woody species recorded followed by Euphorbiaceae 13%, (4 species). From these species, 69% (22 species) were indigenous and 31% (10 species) were exotic. From the indigenous species, two were endemic to Ethiopia (Erythrina brucei and Millettia ferruginea). The largest indigenous species, and highest species diversity (20) were recorded in homegardens followed by parklands (11)). Middle elevation was exhibited higher indigenous species, and highest species richness (19): followed by upper (15) and lower elevation. The Shannon, Simpson and evenness diversity indexes were highest in homegardens. Comparing to parkland, homegarden diversity indexes were highest in upper, middle and lower elevations in decreasing order. Attention should be given to the existing agroforestry practices, and the practices must be promoted to lower elevation to enhance biodiversity conservation in agroforestry land use system.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"27 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2015-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79243194","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}
Pub Date : 2015-09-17DOI: 10.4172/2168-9776.1000157
Emerson Abraham Jackson
This report is based on a qualitative investigation carried out to unearth people’s perceptions in the Goderich Village community of the causes / drivers of deforestation and forest degradation. It has explored the historical background with regard to culture / tradition and economic activities. Regeneration has surely made an impact in beautifying the entire community, but at the expense of the demise of cultural values, and also future environmental risks. Ethnographic methodology was used as the main approach to investigating opinions and with more openended style questions used to help explore deeper understanding of people’s perceptions about common drivers of deforestation and forest degradation. Views on people’s perception about the way forward in cushioning future disaster were also addressed in the conclusion.
{"title":"Ethnographic Narrative of Forest Decline in the Goderich Community: ThePeoples Perspectives","authors":"Emerson Abraham Jackson","doi":"10.4172/2168-9776.1000157","DOIUrl":"https://doi.org/10.4172/2168-9776.1000157","url":null,"abstract":"This report is based on a qualitative investigation carried out to unearth people’s perceptions in the Goderich Village community of the causes / drivers of deforestation and forest degradation. It has explored the historical background with regard to culture / tradition and economic activities. Regeneration has surely made an impact in beautifying the entire community, but at the expense of the demise of cultural values, and also future environmental risks. Ethnographic methodology was used as the main approach to investigating opinions and with more openended style questions used to help explore deeper understanding of people’s perceptions about common drivers of deforestation and forest degradation. Views on people’s perception about the way forward in cushioning future disaster were also addressed in the conclusion.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"11 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2015-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78867720","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}
Pub Date : 2015-08-12DOI: 10.4172/2168-9776.1000159
R. Walker, Swim Sl, R. M. Fecko, Dale W. Johnson, W. W. Miller
Thinning implemented with a cut-to-length system accompanied by on-site slash mastication and dispersal and followed by prescribed underburning were evaluated for their influences on individual tree and stand level growth in eastern Sierran mixed conifer. California white fir (Abies concolor var. lowiana [Gord.] Lemm.) dominated stand composition with Jeffrey pine (Pinus jeffreyi Grev. & Balf.) and sugar pine (Pinus lambertiana Dougl.) moderately represented while incense-cedar (Libocedrus decurrens Torr.) and California red fir (Abies magnifica A. Murr.) were exceedingly minor constituents. One decade after treatment, trees in the thinned stand subunit exhibited large height and DBH gains irrespective of fire treatment, responses attributable to the thinning protocol and to enhanced growth of residual stems, while minimal dimensional changes prevailed in the unthinned subunit. Diminished board feet and cubic volumes prevailed in the thinned subunit, and especially in its burned portion, through the end of the study, however, reflecting a reduction in stocking exacerbated by further loss caused by the underburn. Steep reductions in white fir volumes were responsible for the overall losses in the thinned and burned treatment combination. Jeffrey pine responded favorably to thinning but not to underburning, while sugar pine volume responses were unaffected by either treatment.
本文评价了在西兰东部混合针叶树中，采用切至长度系统进行间伐，并伴有现场砍伐和分散，随后进行规定的欠燃对单株树和林分生长的影响。加州白冷杉(冷杉属，concolor变种，lowiana)[上帝。[Lemm.])以杰弗里松(Pinus jeffreyi Grev.)为主的林分构成。)和糖松(Pinus lambertiana Dougl.)中等代表性，而香雪松(Libocedrus decurrens Torr.)和加州红杉(Abies magnifica A. Murr.)是非常次要的成分。处理后10年，无论火灾处理、疏林方案的响应和残余茎的生长增强，疏林亚基中的树木都表现出较大的高度和胸径增长，而未疏林亚基的尺寸变化最小。然而，到研究结束时，在变薄的亚单位中，特别是在其燃烧部分，普遍存在板英尺和立方体积的减少，反映了由于燃烧不足造成的进一步损失而加剧的放放量减少。在疏烧组合处理中，白杉体积的急剧减少是造成总体损失的原因。杰弗里松对间伐反应良好，但对欠燃反应不佳，而糖松体积反应不受两种处理的影响。
{"title":"Long-Term Growth of Sierra Nevada Mixed Conifer in Response to Mechanized Thinning, Slash Mastication, and Prescribed Fire","authors":"R. Walker, Swim Sl, R. M. Fecko, Dale W. Johnson, W. W. Miller","doi":"10.4172/2168-9776.1000159","DOIUrl":"https://doi.org/10.4172/2168-9776.1000159","url":null,"abstract":"Thinning implemented with a cut-to-length system accompanied by on-site slash mastication and dispersal and followed by prescribed underburning were evaluated for their influences on individual tree and stand level growth in eastern Sierran mixed conifer. California white fir (Abies concolor var. lowiana [Gord.] Lemm.) dominated stand composition with Jeffrey pine (Pinus jeffreyi Grev. & Balf.) and sugar pine (Pinus lambertiana Dougl.) moderately represented while incense-cedar (Libocedrus decurrens Torr.) and California red fir (Abies magnifica A. Murr.) were exceedingly minor constituents. One decade after treatment, trees in the thinned stand subunit exhibited large height and DBH gains irrespective of fire treatment, responses attributable to the thinning protocol and to enhanced growth of residual stems, while minimal dimensional changes prevailed in the unthinned subunit. Diminished board feet and cubic volumes prevailed in the thinned subunit, and especially in its burned portion, through the end of the study, however, reflecting a reduction in stocking exacerbated by further loss caused by the underburn. Steep reductions in white fir volumes were responsible for the overall losses in the thinned and burned treatment combination. Jeffrey pine responded favorably to thinning but not to underburning, while sugar pine volume responses were unaffected by either treatment.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"42 1","pages":"1-13"},"PeriodicalIF":0.0,"publicationDate":"2015-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90889863","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}
Pub Date : 2015-08-10DOI: 10.4172/2168-9776.1000150
Agbelade Ad, Fagbemigun Oa
This paper examined the assessment of incentives for forest biodiversity conservation in rainforest and derived savannah vegetation zones of Ekiti State. Structured questionnaire was use to obtain information on the level of incentive allocation and impact of incentive measures to the people for forest conservation. Data collected were statistically analyzed with Multiple Regression analysis at 0.05 significance level of confidence limit. The results showed that personal factors jointly and independently influence respondents perception on the impact of incentive allocation for forest conservation and sustainability. The beta coefficient showed that the contribution of age to the dependent variable was the only significant variable while gender, marital status, and the level of education were not significant. The level of involvement of government in the conservation of forest is higher than personal and sacred efforts at conserving forest biodiversity. Furthermore, the result showed that there was no significant difference between the incentive allocated in rainforest and incentive allocated in derived savannah for forest conservation and sustainability. Therefore, it is recommend that, government and non-governmental organization should shift attention into the area of incentive allocation to the people for forest conservation and sustainable biodiversity.
{"title":"Assessment of Incentives for Forest Biodiversity Conservation in Rainforest and Derived Savannah Vegetation Zones of Ekiti State, Nigeria","authors":"Agbelade Ad, Fagbemigun Oa","doi":"10.4172/2168-9776.1000150","DOIUrl":"https://doi.org/10.4172/2168-9776.1000150","url":null,"abstract":"This paper examined the assessment of incentives for forest biodiversity conservation in rainforest and derived savannah vegetation zones of Ekiti State. Structured questionnaire was use to obtain information on the level of incentive allocation and impact of incentive measures to the people for forest conservation. Data collected were statistically analyzed with Multiple Regression analysis at 0.05 significance level of confidence limit. The results showed that personal factors jointly and independently influence respondents perception on the impact of incentive allocation for forest conservation and sustainability. The beta coefficient showed that the contribution of age to the dependent variable was the only significant variable while gender, marital status, and the level of education were not significant. The level of involvement of government in the conservation of forest is higher than personal and sacred efforts at conserving forest biodiversity. Furthermore, the result showed that there was no significant difference between the incentive allocated in rainforest and incentive allocated in derived savannah for forest conservation and sustainability. Therefore, it is recommend that, government and non-governmental organization should shift attention into the area of incentive allocation to the people for forest conservation and sustainable biodiversity.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2015-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91345401","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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