Results 81 to 90 of about 56,474 (245)

A Case Report on Rehabilitation of the Asiatic Black Bear (Ursus thibetanus ussuricus) in the Wild 亚洲黑熊 (Ursus thibetanus ussuricus) 野外放归野化案例报告

open access: yesWildlife Letters, EarlyView.
Asiatic black bears in Russia face conservation threats such as habitat destruction and fragmentation, which exacerbate food shortages caused by crop failures. This study explores an innovative approach to rehabilitating bears that abandon hibernation in mid‐winter due to extreme exhaustion by providing supplemental food near their den sites.
Sergey A. Kolchin   +2 more
wiley   +1 more source

Theory And Practice Research on Marine Ecological Rehabilitative Justice---A Case Study of Marine Oil Spill Ecological Damage [PDF]

open access: yes, 2015
随着经济的持续快速发展以及人类需求的不断膨胀,人类从自然界获取资源、能源的领域已经从陆地延伸到了海洋,由此给海洋生态带来的损害也是不容忽视的。新工业发展使石油成为国家战略安全的重要标志,远洋石油运输和海上石油钻井平台蓬勃兴起,所造成的海洋石油污染更是触目惊心,这不仅给国家和个人造成重大经济损失,而且还会给海洋生态环境和自然资源带来极大的危害。我国关于海洋生态损害追偿和救济的法律性规定只有《海洋环境保护法》第90条第2款。该款虽然规定海洋环境监管部门可以提起针对破坏海洋生态的索赔诉讼 ...
刘豆豆
core  

Conservation Status, Decline Factors, and Strategies for Globally Endangered Musk Deer (Moschus spp.) in China 中国境内全球濒危麝属 (Moschus spp.) 物种的保护现状、致危因素及应对策略

open access: yesWildlife Letters, EarlyView.
This review summarizes the status of musk deer in China, highlighting severe population declines due to illegal hunting and habitat loss, and proposes integrated conservation strategies including habitat protection, captive breeding, and law enforcement to support the recovery and sustainable management of this ecologically and economically important ...
Feng Jiang   +8 more
wiley   +1 more source

Preliminary Studies on Light Adaptation and Response to Ca2+ and pH Changes in Shallow-water Corals [PDF]

open access: yes, 2016
珊瑚礁生态系统拥有很高的初级生产力和生物多样性,是一类具有重要的生态功能且极为特殊的生态系统。同时,珊瑚色彩绚丽,种类多样,也具有极高的观赏价值与经济价值,在水族宠物市场备受关注。由于野外采集珊瑚的不可持续性以及对珊瑚礁生态系统的潜在破坏,目前,国内外越来越多的研究开始关注珊瑚尤其是造礁珊瑚人工养殖的环境影响因素。本文研究了不同珊瑚的光适应性,以及钙离子浓度、pH两个重要环境因子对珊瑚的影响,以便有针对性的优化珊瑚养殖系统,提高珊瑚人工养殖的效率。主要研究内容和结果如下: 1、使用调制叶绿素荧光仪 ...
李琰
core  

Internal physiological drivers of leaf development in trees: Understanding the relationship between non‐structural carbohydrates and leaf phenology

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo   +8 more
wiley   +1 more source

Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop   +8 more
wiley   +1 more source

水土保持生态修复的若干科学问题

open access: yesShuitu Baochi Xuebao, 2005
生态修复是水土保持生态建设的深化和发展。在综合分析国内外生态修复研究进展、发展趋势、存在问题的基础上,根据我国水土流失造成生态系统退化的特殊性,以及水土保持生态修复的特点,提出了一系列我国水土保持生态修复过程中需要深入研究的科学问题。主要包括生态修复的潜力及驱动因子,不同尺度生态修复的布局,生态修复技术措施及标准,以流域为单元的生态系统健康评价,水土保持生态修复对生态水文过程、植被演替、生物多样性、农村经济的影响等的综合评价与预测等。
刘国彬 杨勤科 陈云明 张文辉 许明祥
doaj   +2 more sources

Ecological Studies of Marine Virus and its Viral Lysate [PDF]

open access: yes, 2015
病毒是海洋生态系统中数量最多、多样性最为丰富的一类生命形式,具有极为重要的生态地位。为了深入认识海洋浮游病毒及其裂解浮游细菌释放的裂解产物的生态效应,本论文首先研究了西太平洋典型寡营养海区的浮游病毒对浮游细菌的致死效应;接着研究病毒裂解产物如何在不同营养水平(寡营养和富营养)特征的海洋水体中影响浮游细菌的生长、群落组成等生态特性。此外,本论文以海洋生态系统中一类生态地位非常重要的浮游细菌-玫瑰杆菌(Roseobacter)为研究对象,对其裂解性病毒进行了分离纯化和鉴定 ...
纪建达
core  

The coordination of dehydration tolerance and avoidance in oaks is mediated by leaf habit across a precipitation gradient

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests worldwide are increasingly impacted by drought due to climate change, prompting plants to adapt through dehydration tolerance (DT) and avoidance (DA), two distinct physiological strategies.
Xingyun Liang   +11 more
wiley   +1 more source

Study on phytoplankton community similarity and ecological connectivity in northern Beibu Gulf [PDF]

open access: yes, 2015
浮游植物是海洋生态系统中主要的初级生产者,是构成海洋生态系统食物网的基础环节,其种类变化和群落结构直接影响海洋生态系统的结构和功能,在海洋生态系统的物质循环和能量流动过程中起着重要作用。本文以2006~2007年于北部湾进行的四个航次的调查数据,分析了北部湾北部浮游植物的种类组成、数量变化、群落结构以及生物多样性,探讨了浮游植物的群落演替和群落相似性及生态连通性的调控机制,获得主要结果如下: (1)北部湾北部浮游植物四季共鉴定273种(含变种和变型),隶属于5门78属,种类组成以广温类和暖水类为主 ...
王符菁
core  

Home - About - Disclaimer - Privacy