林业科学研究 Pub Date : 2016-10-03 DOI: 10.4172/2168-9776.1000184

Patel Dd

引用次数: 0

Woody Plants of Tamaulipan Thorn Scrub: Morphology, Wood Anatomy and Ecophysiology 塔毛利潘刺丛木本植物:形态学、木材解剖和生态生理学

林业科学研究 Pub Date : 2016-09-30 DOI: 10.4172/2168-9776.1000178

Rodríguez Hg, Maiti Rm, Balboa Pcrb, Tijerina Had, A. Kumari

引用次数: 3

Effects of Soil on Degradation of Robinia pseudoacacia Forests in the Yellow River Delta in China 土壤对黄河三角洲刺槐林退化的影响

林业科学研究 Pub Date : 2016-09-30 DOI: 10.4172/2168-9776.1000182

W. Hong, D. Claire, Z. Yu, S. Yin, L. Yu, Z. Yi

{"title":"Effects of Soil on Degradation of Robinia pseudoacacia Forests in the Yellow River Delta in China","authors":"W. Hong, D. Claire, Z. Yu, S. Yin, L. Yu, Z. Yi","doi":"10.4172/2168-9776.1000182","DOIUrl":"https://doi.org/10.4172/2168-9776.1000182","url":null,"abstract":"Soil quality has significant importance for the growth and sustainability of plants. However, due to the variability and diversity of soil characteristics, many trees suffered death according to their confrontation degree. Over the past several decades, Robinia pseudoacacia forests in the Yellow River delta of China, lose health and died without an obvious cause. This study focuses on evaluating the role of soil characteristics (moisture content, soil salinity content, soil bulk density, soil texture (the percentages of soil sand, soil silt, and soil clay) and pH value on the deterioration of health level of Robinia pseudoacacia forests in the area. To do so, three health levels such as healthy, medium dieback, and severe dieback forest were firstly classified based on the United States Department of Agriculture Forestry Bureau of crown condition classification guide and in situ survey, then soil properties in vertical direction were analyzed by five sampling points for each forest type from surface to the depth of 260 cm with eight layers (0-20 cm, 20-40 cm, 40-60 cm, 60-100 cm, 100-140 cm, 140-180 cm, 180-220 cm and 220-260 cm) for healthy and moderate dieback and 0- 220 cm depth with seven layers for severe dieback because the water occurred after 220 cm depth. The results indicated that there are significant differences in soil moisture content and soil conductivity among three forest health conditions. For a vertical change of soil characteristics only soil particle sizes (sand, silt and clay) had a significant difference in three forest health conditions. For system roots, absorptive roots were observed down to 230 cm depth for healthy Robinia pseudoacacia forest but moderate and severe dieback Robinia pseudoacacia forests, roots are found in the surface layer.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72893427","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}

引用次数: 1

Elemental Ratios in Foliage and Soil of a Jeffrey Pine Stand Subjected to Thinning and Burning Restoration Practices 间伐和焚烧恢复对杰弗里松林分叶片和土壤元素的影响

林业科学研究 Pub Date : 2016-08-30 DOI: 10.4172/2168-9776.1000180

R. Walker, R. M. Fecko, Dale W. Johnson, W. W. Miller

{"title":"Elemental Ratios in Foliage and Soil of a Jeffrey Pine Stand Subjected to Thinning and Burning Restoration Practices","authors":"R. Walker, R. M. Fecko, Dale W. Johnson, W. W. Miller","doi":"10.4172/2168-9776.1000180","DOIUrl":"https://doi.org/10.4172/2168-9776.1000180","url":null,"abstract":"Forest thinnings accomplished through cut-to-length and whole-tree harvesting followed by a prescribed underburn were assessed for their influences on mineral nutrition in eastern Sierran Jeffrey pine (Pinus jeffreyi Grev. & Balf.). As derived from foliar elemental concentrations determined at six samplings distributed over three growing seasons, molar Ca/Al, Mg/Al, K/Al, Ca/Mn, Mg/Mn, and K/Mn were generally higher in the unthinned treatment and lower in burned stand portions. Conducted under drought conditions, the driest phase of the study resulted in lower Ca/Al, Mg/Al, and K/Al and higher Ca/Mn and Ca/Zn when averaged across treatments. Foliar K/Mn, K/Zn, and K/Cu were generally lower in the early portion of the growing season compared to the late portion. At mid growing season, Mg/Al, K/Al, Mg/Mn, K/Mn, K/Fe, K/Zn, and K/Cu were higher in young needles while Ca/Al, Ca/Fe, Mg/Fe, Ca/Zn, Ca/Cu, and Mg/Cu were so in older ones. At mid study, soil Ca/Fe was higher in the unthinned treatment generally and especially in its unburned portion while K/Cu was higher overall in burned stand portions, most especially in the unthinned treatment. These findings provide insight into the interrelationships of base cations and metallic elements in forest nutrition as influenced by restoration practices.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75926516","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}

引用次数: 0

Effects of Drought Disturbance on Forest Biomass in Southwestern China 干旱干扰对西南地区森林生物量的影响

林业科学研究 Pub Date : 2016-08-30 DOI: 10.4172/2168-9776.1000179

Hong Wei, Xiang Zhao, T. Zhou, Ling Du, Bijian Tang, Wenqian Zhao, Rongyun Tang, Jia Chen

{"title":"Effects of Drought Disturbance on Forest Biomass in Southwestern China","authors":"Hong Wei, Xiang Zhao, T. Zhou, Ling Du, Bijian Tang, Wenqian Zhao, Rongyun Tang, Jia Chen","doi":"10.4172/2168-9776.1000179","DOIUrl":"https://doi.org/10.4172/2168-9776.1000179","url":null,"abstract":"Forest growth is easily influenced and disturbed by extreme climate change. Exploring the spatial and temporal changes of forest biomass and its response to climate change is of significant importance to assess the carbon dynamics of terrestrial ecosystem. During 2009-2012, continuous severe drought happened in southwestern China, and large-scale extreme drought occurred in 2009 and 2010. Although previous studies have revealed the responses of vegetation to the drought in southwestern China, there is no study on quantifying the effects of drought disturbance on forest biomass. In this study, annual forest Biomass Carbon Density (BCD) was estimated first using forest resources statistics of China (1984-2013), the Global Inventory Modeling and Mapping Studies (GIMMS) Normalized Difference Vegetation Index (NDVI) and elevation data in southwestern China. Then the effects of drought disturbance on forest biomass were evaluated through correlation analysis combined with the Palmer Drought Severity Index (PDSI) data. The results showed that: (1) the accuracy of forest BCD was enhanced by using Inventory-satellite-based method, and the accuracy reached R2=0.86 (P<0.001); (2) from 2000 to 2013, the mean BCD in southwestern China was 38.66 Mg C/ha, and was increasing annually with rate of 0.102 Mg C/ha; (3) forest BCD continuously declined due to the drought from 2010 to 2012, and in the extreme drought year 2010, BCD anomaly reduced to -1.004 and returned to 0.371 in 2013. Our results indicate that drought disturbances could significantly impact the forest biomass and the carbon dynamics of terrestrial ecosystem.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91255720","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}

引用次数: 1

Utilization of Treated Wastewater and Sewage Sludge in Forest Ecosystems 处理过的废水和污泥在森林生态系统中的利用

林业科学研究 Pub Date : 2016-07-21 DOI: 10.4172/2168-9776.1000E123

M. Nasr

引用次数: 2

Climate Change and Initial Seedling Recruitment in Mediterranean Forest: The Role of Seed Origin 气候变化与地中海森林初始幼苗招募:种子起源的作用

林业科学研究 Pub Date : 2016-07-21 DOI: 10.4172/2168-9776.1000E124

M. Lucas‐Borja

引用次数: 3

Adaptive Morpho-physiological Traits of Woody Plants for Co-existence in a Forest Ecosystem 木本植物在森林生态系统中共存的适应性形态生理特征

林业科学研究 Pub Date : 2016-07-06 DOI: 10.4172/2168-9776.1000175

R. Maiti, H. Rodríguez, A. Kumari

引用次数: 2

Biodiversity of Leaf Traits in Woody Plant Species in Northeastern Mexico: A Synthesis 墨西哥东北部木本植物叶片性状的生物多样性综述

林业科学研究 Pub Date : 2016-07-06 DOI: 10.4172/2168-9776.1000169

H. Rodríguez, R. Maiti, C. Kumari

引用次数: 6

Induced Systemic Resistance Triggered by Clonostachys rosea Against Fusarium circinatum in Pinus radiata 刺槐对刺槐镰刀菌诱导的全身抗性

林业科学研究 Pub Date : 2016-07-06 DOI: 10.4172/2168-9776.1000174

P. Moraga-Suazo, E. Sanfuentes, R. Le-Feuvre

{"title":"Induced Systemic Resistance Triggered by Clonostachys rosea Against Fusarium circinatum in Pinus radiata","authors":"P. Moraga-Suazo, E. Sanfuentes, R. Le-Feuvre","doi":"10.4172/2168-9776.1000174","DOIUrl":"https://doi.org/10.4172/2168-9776.1000174","url":null,"abstract":"Clonostachys rosea (teleomorph Bionectria ochrouleuca) is a powerful biological control agent (BCA), and has been categorized as a broad-spectrum agent against several phytopathogens affecting different crops and forest species. One possible way by which C. rosea can reduce the disease incidence is the Induced Systemic Resistance (ISR), an event associated to several biochemical changes conditioning plants to resist the attack of pathogens. Several studies have found that C. rosea induces resistance against pathogens in legumes, cereals and other crops, but there is a lack of information about the situation in forest species. Therefore, the main goal of this study was to evaluate the behavior of different C. rosea strains as inductors of resistance against the pathogen Fusarium circinatum Niremberg and O`Donnell in two contrasting genotypes of Pinus radiata D. Don. Ten C. rosea strains were applied to the substrate at 8 and 1 days before confronting P. radiata plants with F. circinatum, which was inoculated into 5 μL droplets at a previously cut shoot. The lesion length produced by the pathogen was measured at 60 days post inoculation. It was found that only the resistant P. radiata genotype showed evidence of ISR, with two C. rosea strains, Cr7 and Cr8, triggering resistance and decreasing lesion length to 48.7% and 47.4%, respectively, when compared to pathogen control. These results demonstrate the potential of some C. rosea strains to produce ISR on P. radiata, but at least for this particular pathosystem, this protection appears to be both dependent on the genotype of the host and the inducer C. rosea strain. This is the first report indicating that C. rosea can act as an inducer of resistance on the P. radiate-F. circinatum pathosystem.","PeriodicalId":35920,"journal":{"name":"林业科学研究","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72496588","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}

引用次数: 7

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