Results 51 to 60 of about 20,926 (265)
Zhejiang Daxue xuebao. Lixue ban, 2003 七子花是我国特有的单种属珍稀濒危植物,为国家二级重点保护野生植物,主要分布于浙江、安徽和湖北,而浙江是其分布中心.作者在野外调查的基础上,分析了浙江省七子花的地理分布特点、种群数量和群落类型.结果显示:浙江有七子花分布的群落总面积为54.28公顷,保存有七子花约近3万株(丛),并集中分布在临安等5个县市.七子花分布的群落类型较多,但未见于常绿阔叶林中,反映了七子花是在人类长期干扰下勉强生存.但是,七子花对非生物环境的适应幅度较宽,其种群的生存和发展还是有希望的.最后,根据七子花的资源现状 ...
YUJian(俞建) +4 more
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Hydraulic traits are coordinated but decoupled from carbon traits in herbaceous species
Functional Ecology, Volume 39, Issue 5, Page 1302-1317, May 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant hydraulic traits primarily define the water regulation strategy, thus enabling a better understanding of vegetation structure, function and dynamics under varying hydro‐environments.
Ruike Huang +9 more
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野生动物学报, 2023 为分析圈养幼年大熊猫（Ailuropoda melanoleuca）向亚成体转变过程中的真菌菌群组成和变化规律，以北京动物园圈养的3只14~36月龄大熊猫为研究对象，通过MiSeq测序平台分别测定3只大熊猫14、16、21、26、31、36月龄粪便样本的真菌菌群多样性和群落功能。结果表明：（1）3只大熊猫个体间的真菌群落多样性和丰富度均无显著差异，26月龄的真菌群落多样性和丰富度均最高；（2）门水平上，3只大熊猫的主要菌门均为子囊菌门（Ascomycota），36月龄与其他月龄差异较大 ...
刘燕 +10 more
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Ecological Solutions and Evidence, Volume 6, Issue 2, April–June 2025.Pioneer grass species rapidly colonized the site within 1 year following land reclamation, with a grass‐to‐shrub transition concurrently with dike construction, indicating a clear trajectory of species establishment and development in a newly formed saltmarsh.
Deyi Yin +4 more
wiley +1 more source
Study on the microbial community structure, diversity and abundance in water-soil interface sediments on the watershed of three rivers [PDF]
, 2013 为了探讨无机盐分、养分及有机质矿化作用对微生物群落结构、多样性和功能微生物丰度影响，河流水土界面微生物群落结构和碳、氮、硫循环功能微生物种群的演替规律，本论文以九龙江、闽江和瓯江三江流域作为研究区域，并增加温室培养实验，对其中水土界面沉积物样品中的理化参数、微生物群落、多样性和功能微生物丰度进行测定；采用基因文库构建技术、变性梯度凝胶电泳技术（DGGE）和illumina高通量测序技术分析了样品中微生物群落结构及活动规律；利用实时荧光定量PCR（RT-PCR）技术对功能微生物进行定量 ...
李虎
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野生动物学报, 2007 通过对陕西佛坪自然保护区啮齿类动物进行调查,发现啮齿类动物28种,隶属7科18属,其中,鼠科和仓鼠科为群落优势类群。结果分析表明,啮齿动物的群落多样性以落叶阔叶林为最高,针阔混交林次之,针叶林最低。
张凤臣, 杨兴中, 巩会生
doaj
Functional Ecology, Volume 39, Issue 4, Page 1096-1111, April 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Many invasive plant species have demonstrated a better ability to tolerate and accumulate heavy metals than their co‐occurring native plants. Given the potential biological toxicity of heavy metals to phytopathogens, we postulated that heavy metal contamination could ...
Tiantian Lin +7 more
wiley +1 more source
野生动物学报, 2013 本项研究依托吉林省镇赉县的WRSIS系统,分析了当地夏季鸟类群落的多样性,填补了人工湿地与动物群落间关系研究的空白。2011年8月进行鸟类群落调查,将研究区内的生境划分为人工湿地、稻田2种类型,记录观察到的鸟类种类、数量以及对生境的利用方式（觅食、停歇）。计算每种鸟类在不同生境中的总数量和遇见率。采用鸟类个体数、物种丰富度、多样性、均匀度描述鸟类群落特征,对4个指标进行Mann-Whitney U检验,比较组间差异。研究结果表明,人工湿地鸟类数量和遇见率均高于稻田,Mann-Whitney ...
孔维尧, 郭岳, 燕红, 韩晓东
doaj
Comparison of zooplankton communities inside and outside the Hangzhou Bay in autumn [PDF]
, 2016 本文比较了杭州湾湾外海域(122.10°–122.58°E,30.54°–30.93°N)和湾内不同海域(北岸东侧:121.67°–121.87°E,30.68°–30.83°N;南岸东侧:121.60°–121.85°E,29.95°–30.24°N;北岸西侧:121.31°–121.56°E,30.58°–30.77°N)秋季浮游动物的群落组成、累积优势度曲线以及多样性指数(H')等群落结构特征,并进行了差异性分析。结果表明:湾外海域的群落组成与湾内海域的3个群落之间均有较大的差异 ...
张冬融 +3 more
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Plant nutrient‐acquisition strategies contribute to species replacement during primary succession
Journal of Ecology, Volume 113, Issue 4, Page 988-1003, April 2025.Pioneer species Hippophae acquires phosphorus and nitrogen mainly by ‘mining’ and N2‐fixing strategies and thus dominates in the beginning of primary succession. As soil nutrient availability increases with the mobilization of apatite‐P and input of N‐rich plant residues, Hippophae' strategies become less efficient than Populus's scavenging strategies.
Xiao‐Long Li +12 more
wiley +1 more source