Results 41 to 50 of about 13,566 (164)
野生动物学报, 1999 生物群落的概念很早以前就出现于生物学的各种论著中.本世纪初,对这一概念的理解有两种截然不同的观点,一是认为群落是物种的松散可重复的集合,能作为一个整体在功能上密切统一,并表现出单独机体（超有机体）的特征;第二种观点认为群落至多是物种在分布上的偶然巧合,缺乏内在的组织结构,群落中的物种各自独立地对环境条件做出反映.持不同观点的两大学派各持己见,展开了论战.争论之初,第一种观点占了上风,并统治了该领域几十年之久.到本世纪四十年代末,许多生态学家对第一种群落观点提出挑战认为群落的分类不应该严格不变 ...
赵鲁安 +3 more
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Conservation Biology, Volume 40, Issue 1, February 2026.Abstract As the global protected area (PA) network expands to meet international targets, it is important to assess whether traditional reliance on public land will suffice for projected PA growth or whether other tenures, such as Indigenous or pastoral lands, may increasingly contribute.
Emmeline Norris +2 more
wiley +1 more source
, 2000 This study deals with the capacity for nutrient conservation,the balance of carbon and oxygen as well as the buffering of acid rain in the succession of vegetation of lower subtropical zone of southern China.The results show that:(1)N,P,K contents of ...
Guan, D, Peart, MR
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Conservation Biology, Volume 40, Issue 1, February 2026.The graphical abstract highlights the research collaboration with fishers through interviews to record fishers' knowledge and participatory monitoring, to provide data on small‐scale fisheries in three clear water rivers (Trombetas, Tapajos and Tocantins).
Renato A. M. Silvano +10 more
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Zhejiang Daxue xuebao. Lixue ban, 2015 对东白山（Dongbaishan，DBS）1 hm2森林样地内胸径≥1 cm的木本植物进行统计，初步分析了样地的区系成分、物种组成、群落结构和α多样性.结果表明：样地内共计木本植物48种，隶属23科36属，总计5 493株，以常绿树种为主，共25种，占总优势度的98.18%，重要值的95.22%，总个体数的96.65% ；群落内有明显的优势种、偶见种和部分稀有种，木荷（Schima superba）和马尾松(Pinus massoniana）占显著优势；偶见种和稀有种分别占总物种数的35.42%和20 ...
WANGYunquan(王云泉) +7 more
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月湖底泥疏浚后底栖动物群落的恢复及其与环境的关系 [PDF]
, 2012 研究对月湖底泥疏浚后底栖动物群落动态进行逐月的周年调查,并分析了底栖动物密度、生物多样性与环境因子的关系,结果表明:疏浚导致大型底栖动物基本消失,现存量从疏浚前的(4387±885)ind·m-2降低至(80±21)ind·m-2。疏浚后,寡毛类成为受干扰系统恢复过程中的先锋种类,在春季(4月)和秋冬之际(11月)出现2个密度高峰,分别为(1010±230)ind·m-2和(1538±408)ind·m-2,而摇蚊幼虫在疏浚一年后的秋冬季密度达到高峰(2021±612)ind·m-2 ...
周易勇 +4 more
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Survival, rarity, and extinction in tropical stony corals
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Many reef‐building tropical corals are becoming rare. We considered the meaning of rarity in corals and highlighted taxa that have reached low abundances in the last few decades. The difficulties of quantifying rarity in the marine environment arise from the sheer scale and 3‐dimensional nature of the biome and the inherent challenges therein ...
Bryan Wilson, Peter J. Edmunds
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Shuitu Baochi Xuebao, 2017 为探究茵陈蒿群落不同垂直结构对产流、产沙过程的影响，利用人工模拟降雨试验的方法，研究了不同垂直结构的茵陈蒿群落坡面侵蚀过程。结果表明：在植被盖度相同条件下，茵陈蒿多层群落结构（茵陈蒿+狗尾草+生物结皮）和双层群落结构（茵陈蒿+生物结皮）的减流、减沙效果显著优于单层群落结构，二者的减流效益分别为40.5%和22.6%，减沙效益分别为86.6%和73.5%。不同垂直结构的茵陈蒿群落累积产沙量均可表示为累积产流量的幂函数（R2＞0.98），表现为累积产沙量随累积产流量的增加而增加，且随群落结构层数的增加 ...
李盼盼, 王, 刘国彬, 李文达
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StudyontheStructureandCompositionofForestof HuangshanScenicArea [PDF]
, 2016 为了全面了解黄山风景名胜区主要森林群落类型、植物物种多样性及其分布状况，本文选择了天海景区、北海景区、玉屏景区、西海景区、温泉景区、云谷景区、浮溪保护区、西大门等多个区域，通过样线法和典型样地法相结合，在4条样线、62个样地群落调查基础上，结合前人研究成果，分别从植物区系成分、植被类型分类、珍稀濒危植物、群落物种多样性特征、群落的海拔梯度变化等方面进行综合研究。主要研究结果如下： （1）黄山风景名胜区植物种类丰富，区系成分复杂。共有种子植物173科648属1483种（包括变种、亚种和变型），其中 ...
吕霖
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Functional Ecology, Volume 40, Issue 1, Page 163-175, January 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma +12 more
wiley +1 more source