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Community structure and elevational diversity patterns of soil Acidobacteria

Journal of Environmental Sciences 2014年第8期26卷 1717-1724页

作者： Yuguang Zhang Jing Cong Hui Lu Guangliang li Yuanyuan Qu Xiujiang Su Jizhong Zhou diqiang li Institute of Forestry Ecology Environment and ProtectionKey Laboratory of Forest Ecology and Environment of State Forestry AdministrationChinese Academy of Forestry School of Mineral Processing and Bioengineering Central South University Institute for Environmental Genomics Department of Botany and MicrobiologyUniversity of Oklahoma Hunan Baiyunshan National Nature Reserve

Acidobacteria is one of the most dominant and abundant phyla in soil,and was believed to have a wide range of metabolic and genetic functions. Relatively little is known about its community structure and elevational diversity patterns. We selected four elevation gradients from 1000 to 2800 m with typical vegetation types of the northern slope of Shennongjia Mountain in central China. The vegetation types were evergreen broadleaved forest,deciduous broadleaved forest,coniferous forest and sub-alpine shrubs. We analyzed the soil acidobacterial community composition,elevational patterns and the relationship between Acidobacteria subdivisions and soil enzyme activities by using the 16 S rRNA meta-sequencing technique and multivariate statistical analysis. The result found that 19 known subdivisions as well as an unclassified phylotype were presented in these forest sites,and Subdivision 6 has the highest number of detectable operational taxonomic units（OTUs）. A significant single peak distribution pattern（P 〈 0.05） between the OTU number and the elevation was observed. The Jaccard and Bray–Curtis index analysis showed that the soil Acidobacteria compositional similarity significantly decreased（P 〈 0.01） with the increase in elevation distance. Mantel test analysis showed the most of the soil Acidobacteria subdivisions had the significant relationship（P 〈 0.01） with different soil enzymes. Therefore,soil Acidobacteria may be involved in different ecosystem functions in global elemental cycles. Partial Mantel tests and CCA analysis showed that soil pH,soil temperature and plant diversity may be the key factors in shaping the soil Acidobacterial community structure.

关键词： Elevational pattern,Potential metabolic activity,Acidobacterial subdivision,Soil pH,Driving factor,Environmental change

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Alpha-synuclein gene structure,evolution,and protein aggregation

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Neural Regeneration Research 2010年第18期5卷 1423-1428页

作者： lili Xiong Peng Zhao Zhiyun Guo Jianhua Zhang diqiang li Canquan Mao School of life Sciences and Bioengineering Southwest Jiaotong University Chengdu 610031 Sichuan Province China Department of Pathology University of Alabama at Birmingham Birmingham AL 35294-0017 UK Institute of Forest Ecology Environment and Protection the Chinese Academy of Forestry Beijing 100091 China

α-synuclein, a member of the synuclein family, is predominately expressed in brain tissues, where it is the major component of Lewy bodies, the major hallmark of Parkinson＇s disease. We analyzed the phylogenetics, gene structure, and effects of different forms of α-synuclein on in vitro protein aggregation. The synuclein phylogenetic tree showed that sequences could be classified into α, β, and y protein groups. The orthologous gene α-, β- and y-synuclein showed similar evolutionary distance to the paralogous gene α-, β- and y-synuclein. Bioinformatics analysis suggests that the amino-acid sequence of human a-synuclein can be divided into three regions： N-terminal amphipathic region （1-60）, central hydrophobic non-amyloid beta component segment （61-95）, and the C-terminal acidic part （96-140）. The mutant site of A30P is at the second exon of α-synuclein, whereas E46K is located at the third exon of α-synuclein. α-synuclein alternative splicing results in four isomers, and five exons, all of which participate in protein coding, comprising 140 amino acids to produce the major α-synuclein in vivo. The three α-synuclein isoforms are products of alternative splicing, α-synuclein 126, 112 and 98. We also review the genetic and cellular factors that affect the aggregation of α-synuclein and compounds that inhibit aggregation. A better understanding of α-synuclein sequences, structure, and function may allow better targeted therapy and diagnosis of α-synuclein in Parkinson＇s disease and other neurodegenerative diseases.

关键词： α-synuclein bioinformatics analysis aggregation in vitro Parkinson＇s disease neurodegenerative diseases review neural regeneration

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Use of DNA metabarcoding of bird pellets in understanding raptor diet on the Qinghai-Tibetan Plateau of China

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Avian Research 2021年第3期12卷 296-306页

作者： Charlotte E.Hacker Brandon D.Hoenig liji Wu Wei Cong Jingjing Yu Yunchuan Dai Ye li Jia li Yadong Xue Yu Zhang Yunrui Ji Hanning Cao diqiang li Yuguang Zhang Jan E.Janecka Research Institute of Forest Ecology Environment and ProtectionChinese Academy of Forestryand Key Laboratory of Biodiversity Protection of National Forestry and Grassland AdministrationBeijing 100091China Department of Biological Sciences Duquesne UniversityPittsburghPA 15282USA Yanchiwan National Nature Reserve of Gansu Province Subei 736300China Institute for Ecology and Environmental Resources Chongqing Academy of Social SciencesChongqing 400020China The High School Affiliated to Renmin University of ChinaBeijing 100872China

Background:Diet analysis is essential to understanding the functional role of large bird species in food webs.Mor-phological analysis of regurgitated bird pellet contents is time intensive and may underestimate biodiversity.DNA metabarcoding has the ability to circumvent these issues,but has yet to be done.Methods:We present a pilot study using DNA metabarcoding of MT-RNR1 and MT-CO1 markers to determine the species of origin and prey of 45 pellets collected in Qinghai and Gansu Provinces,China.Results:We detected four raptor species[Eurasian Eagle Owl(Bubo bubo),Saker Falcon(Falco cherrug),Steppe Eagle(Aquila nipalensis),and Upland Buzzard(Buteo hemilasius)]and 11 unique prey species across 10 families and 4 classes.Mammals were the greatest detected prey class with Plateau Pika(Ochotona curzoniae)being the most frequent.Observed Shannon’s and Simpson’s diversity for Upland Buzzard were 1.089 and 0.479,respectively,while expected values were 1.312±0.266 and 0.485±0.086.For Eurasian Eagle Owl,observed values were 1.202 and 0.565,while expected values were 1.502±0.340 and 0.580±0.114.Interspecific dietary niche partitioning between the two spe-cies was not detected.Conclusions:Our results demonstrate successful use of DNA metabarcoding for understanding diet via a novel noninvasive sample type to identify common and uncommon species.More work is needed to understand how raptor diets vary locally,and the mechanisms that enable exploitation of similar dietary resources.This approach has wide ranging applicability to other birds of prey,and demonstrates the power of using DNA metabarcoding to study species noninvasively.

关键词： Avian Eurasian Eagle Owl Molecular diet analysis Next-generation sequencing Raptor Saker Falcon Steppe Eagle Upland Buzzard

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Activity patterns and resource partitioning: seven species at watering sites in the Altun Mountains, China

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Journal of Arid Land 2018年第6期10卷 959-967页

作者： XUE Yadong li Jia SAGEN Guli ZHANG Yu DAI Yunchuan li diqiang Institute of Forest Ecology Environment and ProtectionChinese Academy of ForestryBeijing 100091China Administrative Bureau of Xinjiang Lop Nur Wild Camel National Nature Reserve Urumqi.830011China

As part of a larger project to examine the richness and distribution of wildlife in Kumtag Desert area, we conducted camera trapping surveys during the period 2010–2012 at seven watering sites in an arid region of the Altun Mountains in western China. Information on activity patterns of the wild bactrian camel (Camelus ferus), kiang (Equus kiang), goitered gazelle (Gazella subgutturosa), argali (Ovis ammon), blue sheep (Pseudois nayaur), red fox (Vulpes vulpes), and wolf (Canis lupus) was obtained. We found that the wild camel, kiang, goitered gazelle, argali, and blue sheep were predominantly diurnal at watering sites, whereas red fox and wolf were nocturnal. Five herbivores partitioned the use of watering sites in a temporal manner to minimize the risk of predation by carnivores. The wild camel was the dominant herbivorous species at the watering sites. The kiang, goitered gazelle, argali, and blue sheep displayed adaptive water use by altering spatial or temporal patterns based on the presence or absence of wild camel, to minimize the risk of interspecific strife. These results are suggestive of the differences in activity patterns that might modulate water partitioning by different species, and provide insights for the development of conservation strategies for integrated species and decisions regarding water development in the Altun Mountains.

关键词： camera trapping competition desert animal interaction watering site niche partitioning

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The diversity of denitrifying bacteria in the alpine meadow soil of Sanjiangyuan natural reserve in Tibet Plateau

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Chinese Science Bulletin 2006年第10期51卷 1245-1254页

作者： ZHANG Yuguang li diqiang WANG Huimin XIAO Qiming liU Xueduan Institute of Forestry Ecology Environment and Protection Chinese Academy of Forestry the Key Laboratory of Forest Ecology and En- vironment of State Forestry Administration Beijing 100091 China College of Biosafety Science and Technology Hunan Agricultural University Changsha 410128 China

This is the first time to describe the diversity of denitrifying bacteria in Sanjiangyuan natural reserve in Tibet Plateau by investigating the molecular diversity and phylogenetic analysis of nirK and nosZ genes using PCR-RFLP and sequencing. Four soil samples were collected from alpine meadow communities from over an altitude of 4600 m which had different physicochemical properties by principal component analysis (PCA). For the genes fragment of nirK and nosZ, the diverse PCR products were characterized by cloning, restriction fragment length polymorphism (RFLP) analysis and sequenced. A total of 253 nirK clones and 283 nosZ clones were received in four samples, and 78 operational taxonomic units (OTUs) of nirK and 120 OTUs of nosZ by the restriction enzymes MspI and RsaI digested. The analysis of environmental factors showed that altitude and C/N ratio in soil may be the key factors to the denitrifying bacteria community. 36 nirK clones and 17 nosZ clones were sequenced, and their levels of nucleotide identity were from 69% to 98% and 57% to 97%, respectively. The phylogenetic tree was constructed using the Clustal W and Mega softwares, and all the sequenced clones could be subdivided into 4 groups. Some of clone sequences were related to the nirK and nosZ genes belonging to three phylogenetic subdivisions (α-, β- and γ subclasses of the Proteobacteria), while most of the clones were closely related to the genes of the uncultured bacteria. The sequence distributions were not clear relating to the sample sites in the tree.

关键词：高山草甸脱氮细菌多样性土壤三江源自然保护区西藏高原

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生态屏障的内涵、评价体系、建设实践研究进展

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地理科学进展 2022年第10期41卷 1969-1978页

作者：代云川李迪强重庆社会科学院生态与环境资源研究所生态安全与绿色发展研究中心重庆400020 中国林业科学研究院森林生态环境与自然保护研究所生物多样性保护国家林业和草原局重点实验室北京100091

当前,学界对生态屏障概念尚未达成共识,对其科学内涵、基本属性以及识别体系的研究不够深入;由于缺乏理论指导,生态屏障建设的科学性有待提升、生态屏障建设的机制有待完善。为此,论文对生态屏障的内涵、识别体系和建设实践进行了系统梳... 详细信息

当前,学界对生态屏障概念尚未达成共识,对其科学内涵、基本属性以及识别体系的研究不够深入;由于缺乏理论指导,生态屏障建设的科学性有待提升、生态屏障建设的机制有待完善。为此,论文对生态屏障的内涵、识别体系和建设实践进行了系统梳理,厘清了生态屏障的科学内涵,总结了生态屏障建设的经验与问题,提出了对策建议。研究指出,生态屏障具有地域和功能的双重内涵,表现为特定的空间区位、生态系统结构、生态过程和防护对象,是生态—经济—社会复合系统,具备公共产品属性。在生态屏障建设中,首先需要基于生态屏障的地理区位、主导功能、生态胁迫及不同尺度科学识别生态屏障及其范围;其次,应当尊重生态系统的自然属性和自然规律、推进生态屏障建设跨区域协作;最后,推进生态屏障建设系统治理,统筹生态屏障建设与经济社会发展。

关键词：生态屏障生态安全识别体系协同发展

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气候变化背景下秦岭地区羚牛生境脆弱性评估及适应性保护对策

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生态学报 2022年第18期42卷 7484-7494页

作者：李佳薛亚东吴波李迪强中国林业科学研究院生态保护与修复研究所北京100091 中国林业科学研究院森林生态环境与自然保护研究所/国家林业和草原局生物多样性保护重点实验室北京100091

脆弱性是指物种受气候变化影响的程度,开展脆弱性评估工作有助于人类认识气候变化对野生动物的影响,为制定野生动物适应气候变化的保护对策提供科学依据。采用最大熵模型评估气候变化背景下秦岭地区羚牛(Budorcas taxicolor bedfordi)... 详细信息

脆弱性是指物种受气候变化影响的程度,开展脆弱性评估工作有助于人类认识气候变化对野生动物的影响,为制定野生动物适应气候变化的保护对策提供科学依据。采用最大熵模型评估气候变化背景下秦岭地区羚牛(Budorcas taxicolor bedfordi)生境脆弱性。结果表明:(1)当前秦岭地区羚牛适宜生境总面积为6473 km^(2),到2050s年,预测秦岭地区羚牛适宜生境总面积为4217 km^(2),减少34.85%,羚牛适宜生境将向更高海拔地区转移,转移约210 m;(2)已建保护区覆盖49.82%当前羚牛适宜生境,尚有3248 km^(2)的适宜生境处于保护区之外;到2050s年,保护区覆盖了43.87%适宜生境,尚有2367 km^(2)的适宜生境未被保护;(3)到2050s年,当前分布在太白县、佛坪县、洋县和宁陕县等地区的3490 km^(2)羚牛适宜生境将会成为生境脆弱区域,丧失53.92%;(4)分布在秦岭核心区域的2983 km^(2)当前和2050s年保持不变适宜生境,将成为羚牛躲避气候变化的庇护所。基于研究结果,就未来羚牛应对气候变化的适应性保护对策提出以下几点建议:考虑将当前羚牛适宜生境纳入国家公园范围、构建适应性生态廊道、加强野生动物监测。

关键词：濒危物种气候庇护所适宜生境生态廊道自然保护区

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利用红外相机技术对青海省布尔汗布达山非保护地鸟兽多样性的初步调查

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林业科学 2022年第12期58卷 155-163页

作者：李叶石永红许显金井发菊石振亮刘国虎李迪强中国林业科学研究院森林生态环境与自然保护研究所、生物多样性保护国家林业和草原局重点实验室北京100091 青海省海西州都兰县林业和草原局都兰816100

【目的】了解非保护地类型的青海省中部布尔汗布达山区域部分鸟兽的物种多样性现状,为进一步研究高原物种分布、制定野生动物保护和资源管理计划等提供参考。【方法】于2017年5―10月、2019年3―5月,在布尔汗布达山海拔3000~4500 m范围... 详细信息

【目的】了解非保护地类型的青海省中部布尔汗布达山区域部分鸟兽的物种多样性现状,为进一步研究高原物种分布、制定野生动物保护和资源管理计划等提供参考。【方法】于2017年5―10月、2019年3―5月,在布尔汗布达山海拔3000~4500 m范围内,共布设23个红外相机位点。【结果】累计相机日4703个,有效独立照片共计2868张,识别出22种兽类、25种鸟类,其中兽类分属5目10科,鸟类分属5目12科,另有家养动物4种。相对多度指数RAI前4种对兽类依次为岩羊(6.44)、喜马拉雅旱獭(5.12)、高原兔(2.59)、藏狐(2.17);对鸟类依次为藏雪鸡(4.72)、赭红尾鸲(3.36)、大石鸡(3.15)、红腹红尾鸲(2.59)。中国特有种对兽类有白唇鹿、马鹿、藏原羚3种;对鸟类有地山雀、大石鸡2种。国家Ⅰ级重点保护野生动物5种,国家Ⅱ级重点保护野生动物15种;中国脊椎动物红色名录评估列为濒危6种、易危2种、近危12种。【结论】红外相机的调查结果初步反映了当前青海省中部高原山地鸟兽资源状况,为进一步在非保护地类型的高原传统牧业地区开展生物多样性长期监测、牧区管理和人兽冲突等研究提供了数据基础。

关键词：布尔汗布达山红外相机传统牧业区物种监测都兰县

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基于卫星追踪定位技术的库姆塔格沙漠野骆驼生境利用和迁移规律

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林业科学 2020年第10期56卷 192-198页

作者：薛亚东李迪强李佳中国林业科学研究院森林生态环境与保护研究所生物多样性保护国家林业和草原局重点实验室北京100091 中国林业科学研究院荒漠化研究所北京100091

【目的】确定库姆塔格沙漠野骆驼的活动范围和生境利用情况,识别野骆驼的迁移路径,为野骆驼的管理和保护提供对策。【方法】利用卫星追踪定位技术,于2014—2016年在库姆塔格沙漠地区对3峰野骆驼进行追踪监测,利用最小凸多边形法计算野... 详细信息

【目的】确定库姆塔格沙漠野骆驼的活动范围和生境利用情况,识别野骆驼的迁移路径,为野骆驼的管理和保护提供对策。【方法】利用卫星追踪定位技术,于2014—2016年在库姆塔格沙漠地区对3峰野骆驼进行追踪监测,利用最小凸多边形法计算野骆驼的活动范围,利用内核法分析野骆驼对生境利用的情况。【结果】3峰野骆驼个体的家域面积分别为7596.44、8152.10、1162.17 km2;从季节来看,春季野骆驼平均活动范围最大,为902.79 km2,冬季次之,秋季和夏季最小;总体来说,3峰野骆驼的生境利用有所重叠,但不同个体对生境利用的主要区域有所差别;不同季节野骆驼的生境利用也有所不同,夏季均在较为凉爽的阿尔金山北麓活动,冬季并不是所有个体会聚集在温暖的阿奇克谷地活动;春、秋2季野骆驼的活动热点分布在水源点附近。野骆驼最快能在30 h内完成1次跨越库姆塔格沙漠的迁移,其迁移多数是在发情繁殖期间,尤其是末期的4月。【结论】通过对野骆驼生境利用的分析,可初步确定不同季节野骆驼集中利用的区域和迁移路线,这将为野骆驼及其生境保护管理提供依据。但本研究数据量偏少,需要进一步开展系统研究,以期深入揭示野骆驼的生境需求和迁移活动规律。

关键词：荒漠生态系统有蹄类家域季节性生境利用繁殖期迁移

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利用分布有/无数据预测物种空间分布的研究方法综述!

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生态学报 2013年第22期33卷 7047-7057页

作者：刘芳李晟李迪强中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境重点实验室北京100091 Department of Forest&Wildlife Ecology University of Wisconsin-Madison209 Russell Labs1630 Linden Drive University of Wisconsin-Madison Madison

详细的物种地理分布信息是生态学研究和制定保护策略的基础。相比较于直接估测种群数量,获取物种分布的有/无数据更为实用。因此,利用分布有/无数据并结合环境变量建立模型预测物种空间分布的方法在近年来得到了长足发展,并被广泛应用... 详细信息

详细的物种地理分布信息是生态学研究和制定保护策略的基础。相比较于直接估测种群数量,获取物种分布的有/无数据更为实用。因此,利用分布有/无数据并结合环境变量建立模型预测物种空间分布的方法在近年来得到了长足发展,并被广泛应用。利用分布有/无数据预测物种分布,关键的步骤包括:1)构建总体概念模型,2)收集物种分布有/无数据,并准备环境变量图层;3)选择合适的统计模型和算法,以及4)对模型进行评估。概念模型提出研究假设,并确定数据收集及模型方法。收集物种分布数据有系统调查及非系统调查方法。筛选并准备与物种分布相关的环境变量,利用GIS工具处理,使之成为符合模型条件的具有合适的空间尺度的数字化图层。利用环境变量和物种分布有/无的数据,选择合适的方法及软件建立模型,并对模型进行检验和评估。总结了用于构建物种分布模型的不同算法和软件。针对以上各个环节,阐述利用物种分布有/无数据进行研究所需要的技术细节,以期望为读者提供借鉴。

关键词：有无数据物种分布模型取样模型评估

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