Results 41 to 50 of about 4,188 (210)
Abstract Consumer demand for ivory perpetuates the unsustainable and illegal killing of African elephants and other wildlife species. Interventions that aim to change consumer behavior are increasingly recognized as a crucial element of demand management. However, poor design and implementation have limited their effectiveness.
Molly R. C. Brown +2 more
wiley +1 more source
美国的濒危物种保护法律制度是极有特色和卓有成效的,其主要内容包括:立法目的和政策、法律实施机构、列名单制度、危险制度、夺取违法制度、栖息地保护方案制度和公民诉讼制度等。而重视对栖息地的保护、政府机构对濒危物种保护负有法定义务以及重视公众参与和司法实施则是对我国物种保护法制建设的重要启示。
陈冬
doaj
D-loop Sequence Variation of Mitochondrial DNA in Captive Chinese Alligator [PDF]
扬子鳄 (Alligatorsinensis)是中国特有的珍稀爬行动物 ,至 2 0 0 0年 ,野生扬子鳄的个体数已不足 15 0条 ,作为保护这一物种的措施之一 ,先后于 80年代初建起了 2个养殖场 ,现人工繁殖的扬子鳄总数已达 90 0 0余条。为揭示扬子鳄种群遗传多样性 ,从两个饲养种群中采集了 42个个体的样品 ,其中宣州样品 33个 (XZSP) ,长兴样品 9个(CXSP) ,用PCR方法扩增mtDNA控制区 ,扩增产物纯化后直接用ABI 310全自动遗传分析仪荧光标记测序 ,得到其中 ...
朱伟铨, 王义权, 王朝林
core
How much biotic nativeness matters across human demographic groups
Abstract Many central concepts of conservation biology—such as nativeness—are structured by ecological and social factors. However, the social consequences of using these concepts to make conservation decisions remain inadequately understood. Some researchers argue that nativeness, rather than acting as an objective proxy for important ecological ...
Harold N. Eyster, Rachelle K. Gould
wiley +1 more source
本文论述了铜壁关自然保护区的现状、存在问题及发展对策。铜壁关保护区地理位置特殊,区系复杂,物种丰富,特有种多,对我国生物多样性保护具有十分重要的意义。但保护区至今尚未升为国家级,保护区级别低、缺乏专业技术人员、管理体制不顺等问题困扰着保护区的进一步发展。建议成立保护区管理局,理顺管理体制,扩大保护区面积,尽快升为国家级保护区,进行更为严格的管理。
郜二虎, 李青文, 赵晓东
doaj
近几年来,我国不断发展高速交通运输,高速公路建设不仅带来经济发展,而且也破坏了环境。在我国由于南北方自然环境等各个方面的差异,高速公路造成的环境影响特别是对生态环境影响也存在差异。文章在对比分析了南北方几条高速公路修建中对各环境要素的影响及环境保护对策基础上,总结出南北高速公路修建对环境影响的异同 ...
彭荔红, 潘艺鹏, 王健
core
Comprehensive framework for assessing and optimizing existing research networks
Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
wiley +1 more source
今年一月,正值隆冬季节,我们来到了大熊猫的故乡——卧龙自然保护区,对大熊猫的保护和管理作了一些调查。调查之余,倍感大熊猫的可爱,同时也觉得保护大熊猫的任务既艰巨又迫切,现谈以下几点对策:
王韩民
doaj
20 0 2年中国首次超过美国成为全球最大的外国直接投资接受国 ,吸引外资达 5 2 7亿美元。我国处于经济转轨的时期 ,在新的经济发展格局下 ,如何更多地引进外资 ,引进什么样的外资 ,以及如何发挥外资对我国经济的促进作用是我国下一步经济发展的关键。本文从不同的角度分析了我国目前外资政策的弊端 ...
冶晓娜
core
Abstract Recognition and engagement of Indigenous Peoples and local communities (IP&LCs) and other traditional knowledge (TK) holders in formal biodiversity governance remain limited, despite their significant contribution to the conservation and sustainable use of biodiversity through their knowledge, innovations, practices, and land stewardship.
Kinga Öllerer +8 more
wiley +1 more source

