人类活动对生物多样性的影响

来源 :生态经济(英文版) | 被引量 : 0次 | 上传用户:iceman923
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The impact of human activity on biodiversity is very complicated, making it difficult to design practical indicators for assessment. Currently, state and response indicators are listed within Chapter 15 of Agenda 21, but no mention is made of driving force indicators and how they relate to biodiversity protection. This paper repre-sents an effort to identify and then operationalize the idea of driving force indicators at national level Five humaninduced factors affecting biodiversity were discussed: (a) habitat loss and fragmentation; (b) overexploitation of resources; (c) species introduction; (d) pollution; and (e) climate change. From these five factors, a subset was selected to serve as possible driving force indicators: (1) habitat loss, (2) the ratio of exotic species to indigenous ones, and (3) the change in pollution status. Although the three indicators are relatively simple, they cover the most important human impacts on biodiversity and offer the potential for further redefinition and ultimate use within the spirit of biodiversity protection.
其他文献
文章主要分析了甘肃省在“一带一路”经济带中的区位优势,以及甘肃省产业结构的现状,明确甘肃省在经济发展方面的问题,并针对这些问题提出了一系列的解决措施.甘肃省是“一带
目前,社会的发展进步速度是有目共睹的,经济在不断的进步,进而在推动城市不断的发展.在城市发展的过程中,城市的规划问题关乎着城市经济发展的各个方面.在城市发展中势必会面
在传统的人工水产养殖过程中,饲养员会往水中投放一定的肥料与药物,保证水产品的正常生长,但随着我国社会经济的不断进步,“可持续发展”的理念与 “绿色生产”的环保要求得
教学目标:1.认识“俩、摘”等7个生字,能读准字音,认清字形.2.能正确、流利、有感情地朗读课文,读好有请求语气的句子.3.能读懂课文的内容,对“地心引力”现象发生浓厚的兴趣
始于欧洲的国际展览业协会(UFI)将目光移向欣欣向荣的中国经济和崛起中的中国展览业,首次在中国大陆城市举办国际展览业协会年会。2006年11月8~11日,来自48个国家的348名代表
我院自1995年6月~2000年2月,应用交锁髓内钉治疗股骨及胫骨干骨折196例,现总结如下.
某日上班,只见病区内众人交头接耳,神情紧张.一位资历颇深的从事肿瘤临床多年的老医生将我叫到一旁,问我和昨日刚收治入院的男病人有何关系.我不觉为之一怔,病人确是熟人介绍
This paper probes into the establishment of ecological city of Mianyang and directive thoughts, measures,and countermoves are put forward based on analyzing the
Jilong is a place behind The Himalayas, which is almost isolated from the world. There is typical vertical ecosystem thanks to its special geological environmen