Pub Date : 2019-01-01DOI: 10.4172/2168-9776.1000225
D. Kulhavy, W. Ross, Sun, D. Unger, I. Hung, R. Conner
We measured resin flow in loblolly (Pinus taeda L.) and shortleaf (Pinus echinata Mill.) pines in stands used by red-cockaded woodpecker, Picoides borealis (Vieillot), in the Angelina and Davy Crockett National Forests in eastern Texas. We also measured resin flow in a mature loblolly pine stand not used by the woodpeckers. Resin flow varied by study area, species, and stand position. In woodpecker stands, pines experiencing low levels of competition seemed better able to tolerate the continual resin drainage associated with red-cockaded woodpecker resin well pecking. In the Angelina National Forest, all new cavity trees excavated during the study were on forest edges. In the non-woodpecker stand, edge trees had significantly better resin flow. These results indicate that the woodpeckers choose trees most likely to be good resin producers. They also indicate that silviculture in loblolly and shortleaf pine stands should favor edge and an open stand habit when red-cockaded woodpeckers are a major management consideration and that potential resin production can be measured in both cavity pines, and pines being considered for red-cockaded woodpecker introduction.
{"title":"Resin Flow in Loblolly and Shortleaf Pines Used by Red-Cockaded Woodpeckers","authors":"D. Kulhavy, W. Ross, Sun, D. Unger, I. Hung, R. Conner","doi":"10.4172/2168-9776.1000225","DOIUrl":"https://doi.org/10.4172/2168-9776.1000225","url":null,"abstract":"We measured resin flow in loblolly (Pinus taeda L.) and shortleaf (Pinus echinata Mill.) pines in stands used by red-cockaded woodpecker, Picoides borealis (Vieillot), in the Angelina and Davy Crockett National Forests in eastern Texas. We also measured resin flow in a mature loblolly pine stand not used by the woodpeckers. Resin flow varied by study area, species, and stand position. In woodpecker stands, pines experiencing low levels of competition seemed better able to tolerate the continual resin drainage associated with red-cockaded woodpecker resin well pecking. In the Angelina National Forest, all new cavity trees excavated during the study were on forest edges. In the non-woodpecker stand, edge trees had significantly better resin flow. These results indicate that the woodpeckers choose trees most likely to be good resin producers. They also indicate that silviculture in loblolly and shortleaf pine stands should favor edge and an open stand habit when red-cockaded woodpeckers are a major management consideration and that potential resin production can be measured in both cavity pines, and pines being considered for red-cockaded woodpecker introduction.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"65 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75758582","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 : 2019-01-01DOI: 10.4172/2168-9776.1000224
S. Talukdar
The purpose of this research is to explain, one of the reasons behind environmental damage when economic activities are less, even related with economic situation: This research discusses role of economic sector in environmental damage for recession. The work discusses trend situation of Air pollution. Result: Wrong use of Agriculture land should be responsible for it. A tax on middle income situation suggested taking care of both tail of economic situation to have environment friendly circle.
{"title":"Global Warming: Recession Agriculture Forest Atmosphere (RAA)","authors":"S. Talukdar","doi":"10.4172/2168-9776.1000224","DOIUrl":"https://doi.org/10.4172/2168-9776.1000224","url":null,"abstract":"The purpose of this research is to explain, one of the reasons behind environmental damage when economic activities are less, even related with economic situation: This research discusses role of economic sector in environmental damage for recession. The work discusses trend situation of Air pollution. Result: Wrong use of Agriculture land should be responsible for it. A tax on middle income situation suggested taking care of both tail of economic situation to have environment friendly circle.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"24 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77918810","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 : 2018-05-23DOI: 10.4172/2168-9776.1000218
C. Cam, S. Rep, S. Ac, Sanjinez-Argandoña Ej
Bocaiuva (Acrocomia aculeata) fruit pulp has high potential for food, pharmaceutical and cosmetic applications and in the biofuel industry. The main hindrance for these applications is the availability of pulp in sufficient quantity. The pulp of this fruit is usually supplied by rural communities where the processors use manual pulping, which is not only time-consuming but yields product of low quality. The objective of this work was to design, fabricate and evaluate the efficiency of an experimental bench device for pulping bocaiuva fruits. The bench device was designed to be compact and easy to operate, with intermittent operation and pulping performed by shearing. The performance evaluation of the machine was carried out with fruit dehydrated at 70°C and different times of dehydration (6, 12 and 24 hours). The pulp weight was evaluated every 15 seconds during the pulping process period (150 seconds). The highest pulping efficiency (96%) was obtained with fruits that were dehydrated for 24 hours, with a 120-second pulping, which resulted in a production rate of 5.5 kg h-1 This high efficiency makes this mechanized prototype effective for pulping bocaiuva fruits and, thus, it can replace manual pulping, especially in rural communities involved with the bocaiuva production chain.
博caiuva (Acrocomia acleata)果肉在食品、制药和化妆品以及生物燃料工业中具有很高的应用潜力。这些应用的主要障碍是获得足够数量的纸浆。这种水果的果肉通常由农村社区提供，那里的加工商使用人工制浆，这不仅耗时，而且产品质量低。本工作的目的是设计，制造和评价一个实验台装置的纸浆番石榴果的效率。该装置结构紧凑，操作方便，采用间歇式操作，通过剪切进行制浆。对70℃脱水的水果进行性能评价，脱水时间分别为6、12、24小时。在制浆过程中(150秒)每15秒评估一次纸浆重量。在脱水24小时，120秒制浆的情况下，获得了最高的制浆效率(96%)，制浆率为5.5 kg h-1，这一高效率使得该机械化原型有效地制浆了桦树果实，因此，它可以取代人工制浆，特别是在涉及桦树生产链的农村社区。
{"title":"Development of a Device to Pulping Fruits of Bocaiuva (Acrocomia aculeate sp.) for the Communities that Practice Sustainable Strativism","authors":"C. Cam, S. Rep, S. Ac, Sanjinez-Argandoña Ej","doi":"10.4172/2168-9776.1000218","DOIUrl":"https://doi.org/10.4172/2168-9776.1000218","url":null,"abstract":"Bocaiuva (Acrocomia aculeata) fruit pulp has high potential for food, pharmaceutical and cosmetic applications and in the biofuel industry. The main hindrance for these applications is the availability of pulp in sufficient quantity. The pulp of this fruit is usually supplied by rural communities where the processors use manual pulping, which is not only time-consuming but yields product of low quality. The objective of this work was to design, fabricate and evaluate the efficiency of an experimental bench device for pulping bocaiuva fruits. The bench device was designed to be compact and easy to operate, with intermittent operation and pulping performed by shearing. The performance evaluation of the machine was carried out with fruit dehydrated at 70°C and different times of dehydration (6, 12 and 24 hours). The pulp weight was evaluated every 15 seconds during the pulping process period (150 seconds). The highest pulping efficiency (96%) was obtained with fruits that were dehydrated for 24 hours, with a 120-second pulping, which resulted in a production rate of 5.5 kg h-1 This high efficiency makes this mechanized prototype effective for pulping bocaiuva fruits and, thus, it can replace manual pulping, especially in rural communities involved with the bocaiuva production chain.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"517 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2018-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77145849","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 : 2018-01-01DOI: 10.4172/2168-9776.1000223
Divakara Bn, S. Viswanath, Nikhitha Cu, S. Kumar
Sandalwood (Santalum album L., Family: Santalaceae) is one of the most important economic tree species harvested mainly for its heartwood and oil. Sandalwood referred to as “Chandana” in Sanskrit and is commercially known as “East Indian Sandalwood” and its essential oil known as “East Indian Sandalwood Oil”. The oil extracted from the sandalwood trees are considered to be unique and is preferred over other regions for the preparations of perfumes, formulations, flavors, cosmetics, toiletries, beauty aids and medicines. Despite the policy amendments and government support to cultivate sandalwood on farm lands, there is lot of skepticism on the economic aspect of sandalwood cultivation especially due to long gestation period in accruing returns and high investment required for protection. Study on economic viability of sandalwood cultivation would be extremely useful to different stakeholders like farmers to know the relative profitability of sandalwood cultivation. Also, for financial institutions involved in advancing farm loans to sandalwood cultivators, the economics of cultivation at discounted rates is an essential aspect. For calculation of cost of raising sandalwood plantation, information on various inputs and resources at different stages of cultivation, harvesting, processing, transportation and marketing was collected from cultivators. Data related to recent price of sandalwood heartwood and sapwood was collected from Karnataka Soaps and Detergent Limited (KSDL). For financial analysis indicator like Net Present Value (NPV), Benefit-cost ratio (B/C ratio), Internal Rate of Return (IRR), Equivalent Annual Income (EAI) and Land Expectation Value (LEV) were used. Sandalwood cultivated in combination with red-gram showed B/C ratio of 1.93 and IRR of 29%, compared to growing sandalwood alone with B/C ratio and IRR values of 2.58 and 26% respectively. Though the inter-cultivation (sandalwood+tur dal) have slightly lower NPV, B/C ratio and LEV, but higher EAI (annual NVP) when compared to pure sandalwood plantations however, the possibility of yielding Pigeon pea/Tur dal/Red gram (Cajanus cajan (L.) Millsp.) in inter-cultivation makes farmers comparatively more attractive as it gives some income every year.
檀香(Santalum album L.，科:檀香科)是最重要的经济树种之一，主要收获其心材和油。檀香在梵语中被称为“Chandana”，商业上被称为“东印度檀香”，其精油被称为“东印度檀香油”。从檀香木树中提取的油被认为是独特的，比其他地区更适合用于香水、配方、香料、化妆品、洗漱用品、美容辅助和药物的制备。尽管政策修订和政府支持在农田种植檀香，但对檀香种植的经济方面仍有很多怀疑，特别是由于积累回报的酝酿期长，以及保护所需的高投资。研究檀香种植的经济可行性对不同的利益相关者(如农民)了解檀香种植的相对盈利能力非常有用。此外，对于参与向檀香种植者提供农业贷款的金融机构来说，以贴现率进行种植的经济学是一个重要方面。为了计算檀香种植的成本，从栽培者那里收集了栽培、收获、加工、运输和销售不同阶段的各种投入和资源信息。有关檀香心材和边材最近价格的数据是从卡纳塔克肥皂和洗涤剂有限公司(KSDL)收集的。财务分析采用净现值(NPV)、效益成本比(B/C ratio)、内部收益率(IRR)、等效年收入(EAI)和土地预期价值(LEV)等指标。与单独栽培相比，与红革组合栽培的檀香的B/C比为1.93,IRR为29%，其B/C比和IRR分别为2.58和26%。虽然与纯檀香人工林相比，间作(檀香+扁豆)的净现值(NPV)、B/C比和LEV略低，但EAI(年NVP)较高，但生产鹰嘴豆/扁豆/红克(Cajanus cajan (L.))的可能性较大。由于每年都有一定的收入，因此对农民的吸引力相对更大。
{"title":"Economics of Santalum album L. Cultivation Under Semiarid Tropics of Karnataka, India","authors":"Divakara Bn, S. Viswanath, Nikhitha Cu, S. Kumar","doi":"10.4172/2168-9776.1000223","DOIUrl":"https://doi.org/10.4172/2168-9776.1000223","url":null,"abstract":"Sandalwood (Santalum album L., Family: Santalaceae) is one of the most important economic tree species harvested mainly for its heartwood and oil. Sandalwood referred to as “Chandana” in Sanskrit and is commercially known as “East Indian Sandalwood” and its essential oil known as “East Indian Sandalwood Oil”. The oil extracted from the sandalwood trees are considered to be unique and is preferred over other regions for the preparations of perfumes, formulations, flavors, cosmetics, toiletries, beauty aids and medicines. Despite the policy amendments and government support to cultivate sandalwood on farm lands, there is lot of skepticism on the economic aspect of sandalwood cultivation especially due to long gestation period in accruing returns and high investment required for protection. Study on economic viability of sandalwood cultivation would be extremely useful to different stakeholders like farmers to know the relative profitability of sandalwood cultivation. Also, for financial institutions involved in advancing farm loans to sandalwood cultivators, the economics of cultivation at discounted rates is an essential aspect. For calculation of cost of raising sandalwood plantation, information on various inputs and resources at different stages of cultivation, harvesting, processing, transportation and marketing was collected from cultivators. Data related to recent price of sandalwood heartwood and sapwood was collected from Karnataka Soaps and Detergent Limited (KSDL). For financial analysis indicator like Net Present Value (NPV), Benefit-cost ratio (B/C ratio), Internal Rate of Return (IRR), Equivalent Annual Income (EAI) and Land Expectation Value (LEV) were used. Sandalwood cultivated in combination with red-gram showed B/C ratio of 1.93 and IRR of 29%, compared to growing sandalwood alone with B/C ratio and IRR values of 2.58 and 26% respectively. Though the inter-cultivation (sandalwood+tur dal) have slightly lower NPV, B/C ratio and LEV, but higher EAI (annual NVP) when compared to pure sandalwood plantations however, the possibility of yielding Pigeon pea/Tur dal/Red gram (Cajanus cajan (L.) Millsp.) in inter-cultivation makes farmers comparatively more attractive as it gives some income every year.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"37 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82044942","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 : 2018-01-01DOI: 10.4172/2168-9776.1000214
K. Mh, Hariri Mf
Field experiment was carried out at the Experimental Farm of the Salinity and Alkalinity laboratory, Sabaheia- Alexandria, to quantify growth, biomass and chemical composition on responses of lebbeck and chinaberry to three levels of drought stress and three organic amendments after two successive seasons of 2015 and 2016. The results indicated that well-watered treatment had the higher values of height growth, stem diameter, leaves number, shoots dry weight, shoots: roots (S: R) ratio, total chlorophyll and total carotenoides. On the other hand, severe treatment (50% field capacity) resulted in the highest values of roots dry weight, proline and total phenols contents for both tree species. Compost was better to enhance the growth parameters of lebbeck while, humate was the better to increase growth parameters of chinaberry. Total chlorophyll and total carotenoides of the two species were enhanced by adding humate. The interaction results indicated that the highest values of growth parameters of lebbeck resulted from compost combined with moderate or well-watered treatments. While humic acid combined with well-watered or moderate treatments were the best for growth of chinaberry seedlings.
{"title":"Improving Growth of Lebbeck and Chinaberry Transplants for Drought by Using Organic Amendments","authors":"K. Mh, Hariri Mf","doi":"10.4172/2168-9776.1000214","DOIUrl":"https://doi.org/10.4172/2168-9776.1000214","url":null,"abstract":"Field experiment was carried out at the Experimental Farm of the Salinity and Alkalinity laboratory, Sabaheia- Alexandria, to quantify growth, biomass and chemical composition on responses of lebbeck and chinaberry to three levels of drought stress and three organic amendments after two successive seasons of 2015 and 2016. The results indicated that well-watered treatment had the higher values of height growth, stem diameter, leaves number, shoots dry weight, shoots: roots (S: R) ratio, total chlorophyll and total carotenoides. On the other hand, severe treatment (50% field capacity) resulted in the highest values of roots dry weight, proline and total phenols contents for both tree species. Compost was better to enhance the growth parameters of lebbeck while, humate was the better to increase growth parameters of chinaberry. Total chlorophyll and total carotenoides of the two species were enhanced by adding humate. The interaction results indicated that the highest values of growth parameters of lebbeck resulted from compost combined with moderate or well-watered treatments. While humic acid combined with well-watered or moderate treatments were the best for growth of chinaberry seedlings.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"31 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81814224","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 : 2018-01-01DOI: 10.4172/2168-9776.1000216
L. Qiu, D. Zhang, H. Huang, Q. Xiong, G. Zhang
To predict the distribution of Mikania micrantha, one of the most harmful invasive plants in Guangzhou City, the author selected relevant environmental factors and established a feasible simple model based on BP neural network to use its strong nonlinear ability in this paper. From this model, it is concluded that the distribution possibility of Mikania micrantha in Liwan District, Yuexiu District and Haizhu District is near 0, which are classified as regions without invasion risk; the distribution possibility in Conghua District and Huadu District is 60% and 69.3% respectively, which are defined as regions with low invasion risk; the distribution possibility in Baiyun District, Panyu District, Zengcheng District and Nansha District are much higher, which are identified as regions with high invasion risk; while the distribution possibility in Luogang District, Tianhe District and Huangpu District are the highest, which are determined as regions with highest risk.
{"title":"BP Neural Network Based Prediction of Potential Mikania micrantha Distribution in Guangzhou City","authors":"L. Qiu, D. Zhang, H. Huang, Q. Xiong, G. Zhang","doi":"10.4172/2168-9776.1000216","DOIUrl":"https://doi.org/10.4172/2168-9776.1000216","url":null,"abstract":"To predict the distribution of Mikania micrantha, one of the most harmful invasive plants in Guangzhou City, the author selected relevant environmental factors and established a feasible simple model based on BP neural network to use its strong nonlinear ability in this paper. From this model, it is concluded that the distribution possibility of Mikania micrantha in Liwan District, Yuexiu District and Haizhu District is near 0, which are classified as regions without invasion risk; the distribution possibility in Conghua District and Huadu District is 60% and 69.3% respectively, which are defined as regions with low invasion risk; the distribution possibility in Baiyun District, Panyu District, Zengcheng District and Nansha District are much higher, which are identified as regions with high invasion risk; while the distribution possibility in Luogang District, Tianhe District and Huangpu District are the highest, which are determined as regions with highest risk.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"198 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77291022","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 : 2018-01-01DOI: 10.4172/2168-9776.1000217
Zeng Ws
Forest ecosystem is the largest carbon bank on land, and biomass models will be essential basis for evaluating carbon sequestration capacity of forests. Based on the general biomass model M=0.3pD7/3 presented by Zeng and Tang, one-variable individual tree aboveground biomass models for all 34 tree species or groups in China were established using the data of wood basic density of all tree species published; and based on the mensuration data of the National Forest Biomass Modeling Program, the aboveground biomass models of 14 tree species or genera were validated. Additionally, compatible belowground biomass models and root-to-shoot ratio models for two species groups, coniferous and broadleaved, were developed and evaluated. The results showed that the averages of absolute relative errors of above- and below-ground biomass estimates from one-variable biomass models developed in this study were less than the error allowances 10% and 15%, respectively. The developed biomass models here could be applied to estimate forest biomass at national level and would be important supplement to the ministerial standards on biomass models which were promulgated and implemented in the recent years.
{"title":"Developing One-variable Individual Tree Biomass Models based on Wood Density for 34 Tree Species in China","authors":"Zeng Ws","doi":"10.4172/2168-9776.1000217","DOIUrl":"https://doi.org/10.4172/2168-9776.1000217","url":null,"abstract":"Forest ecosystem is the largest carbon bank on land, and biomass models will be essential basis for evaluating carbon sequestration capacity of forests. Based on the general biomass model M=0.3pD7/3 presented by Zeng and Tang, one-variable individual tree aboveground biomass models for all 34 tree species or groups in China were established using the data of wood basic density of all tree species published; and based on the mensuration data of the National Forest Biomass Modeling Program, the aboveground biomass models of 14 tree species or genera were validated. Additionally, compatible belowground biomass models and root-to-shoot ratio models for two species groups, coniferous and broadleaved, were developed and evaluated. The results showed that the averages of absolute relative errors of above- and below-ground biomass estimates from one-variable biomass models developed in this study were less than the error allowances 10% and 15%, respectively. The developed biomass models here could be applied to estimate forest biomass at national level and would be important supplement to the ministerial standards on biomass models which were promulgated and implemented in the recent years.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"30 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86987570","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 : 2018-01-01DOI: 10.4172/2168-9776.1000221
Nazish Nazir, A. Kamili, Durdana Shah, Zargar My
Taxus wallichiana Zucc. (Himalayan yew), is precious for taxol or paclitaxel removal used in the research of anti-cancer drugs (ovarian cancers, AIDS related cancers and other indications). It is a slow growing tree species due toits very poor natural regeneration and very low seed germination. The present investigation tested the consequenceof different plant growth regulators such as, Indole Butyric Acid (IBA), Indole-3- Acetic Acid (IAA) and NaphthaleneAcetic Acid (NAA) on adventitious rooting of Himalayan yew shoot cuttings in four different seasons (spring,summer, autumn and winter) under nursery conditions. Shoot cuttings were treated with diverse concentrations ofIBA, IAA and NAA. However, IBA at 1000 ppm in spring season (Mar-May) showed best response in stipulations ofroot length, root number and rooting percentage. The present investigation reveals that this method has thepotentiality of using the young shoot cuttings of Himalayan yew in presence of plant growth regulating hormone IBAfor its propagation and production on large extent to congregate the increasing stipulate.
{"title":"Adventitious Rooting in Shoot Cuttings of Taxus wallichiana Zucc., an Endangered Medicinally Important Conifer of Kashmir Himalaya","authors":"Nazish Nazir, A. Kamili, Durdana Shah, Zargar My","doi":"10.4172/2168-9776.1000221","DOIUrl":"https://doi.org/10.4172/2168-9776.1000221","url":null,"abstract":"Taxus wallichiana Zucc. (Himalayan yew), is precious for taxol or paclitaxel removal used in the research of anti-cancer drugs (ovarian cancers, AIDS related cancers and other indications). It is a slow growing tree species due toits very poor natural regeneration and very low seed germination. The present investigation tested the consequenceof different plant growth regulators such as, Indole Butyric Acid (IBA), Indole-3- Acetic Acid (IAA) and NaphthaleneAcetic Acid (NAA) on adventitious rooting of Himalayan yew shoot cuttings in four different seasons (spring,summer, autumn and winter) under nursery conditions. Shoot cuttings were treated with diverse concentrations ofIBA, IAA and NAA. However, IBA at 1000 ppm in spring season (Mar-May) showed best response in stipulations ofroot length, root number and rooting percentage. The present investigation reveals that this method has thepotentiality of using the young shoot cuttings of Himalayan yew in presence of plant growth regulating hormone IBAfor its propagation and production on large extent to congregate the increasing stipulate.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"99 5 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83617755","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 : 2018-01-01DOI: 10.4172/2168-9776.1000220
B. Oswald, D. Boensch, H. Williams, I. Hung
US Federal land managers have utilized hand ignited prescribed fire at Big Thicket National Preserve in efforts to restore the structure and diversity of the longleaf pine (Pinus palustris) forest. A fire ecology study was initiated by Rice University in the early 1990’s and the National Park Service has continued monitoring the plots. Ordination was applied to species abundance data to examine changes in vegetation communities from a variety of prescribed fire treatments and controls. The vegetation data was separated by size class to include overstory, small tree, large sapling and seedling data. Across the size classes and treatments, the sandhill and wetland savanna vegetation types remained less effected by fire treatments and only the upland pine responded to changes in the overstory. Upon reviewing fire return interval histories, it became evident that prescribed fire alone was not changing vegetation communities. Most of the plots did not have longleaf pine trees or seedlings present and only two plots that were mechanical treated showed distinction among other treatment regimes. Restoration treatments including the mechanical and chemical application and seedling plantings are necessary to ensure restoration of the longleaf pine forest structure and diverse understory vegetation.
{"title":"Responses to Prescribed Fire at Big Thicket National Preserve, Texas, USA","authors":"B. Oswald, D. Boensch, H. Williams, I. Hung","doi":"10.4172/2168-9776.1000220","DOIUrl":"https://doi.org/10.4172/2168-9776.1000220","url":null,"abstract":"US Federal land managers have utilized hand ignited prescribed fire at Big Thicket National Preserve in efforts to restore the structure and diversity of the longleaf pine (Pinus palustris) forest. A fire ecology study was initiated by Rice University in the early 1990’s and the National Park Service has continued monitoring the plots. Ordination was applied to species abundance data to examine changes in vegetation communities from a variety of prescribed fire treatments and controls. The vegetation data was separated by size class to include overstory, small tree, large sapling and seedling data. Across the size classes and treatments, the sandhill and wetland savanna vegetation types remained less effected by fire treatments and only the upland pine responded to changes in the overstory. Upon reviewing fire return interval histories, it became evident that prescribed fire alone was not changing vegetation communities. Most of the plots did not have longleaf pine trees or seedlings present and only two plots that were mechanical treated showed distinction among other treatment regimes. Restoration treatments including the mechanical and chemical application and seedling plantings are necessary to ensure restoration of the longleaf pine forest structure and diverse understory vegetation.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":"16 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86698788","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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