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生物高度多样性 被引量:5
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作者 袁兴中 张承德 《生物学通报》 北大核心 1995年第1期8-10,共3页
本文论述了生物高度多样性的概念及其评价尺度,介绍了世界上主要的生物高度多样性国家的概况。我国是生物高度多样性国家之一,其生物高度多样性与生态、地理条件及地质历史密切相关。加强对生物高度多样性国家和地区的保护,对保护全... 本文论述了生物高度多样性的概念及其评价尺度,介绍了世界上主要的生物高度多样性国家的概况。我国是生物高度多样性国家之一,其生物高度多样性与生态、地理条件及地质历史密切相关。加强对生物高度多样性国家和地区的保护,对保护全球生物多样性来说有着极其重要的战略意义。 展开更多
关键词 生物 生物高度多样性 生物多样性
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生物多样性与资源合理开发
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作者 师彩华 《中学生物教学》 1998年第6期36-37,共2页
说到环境问题,大家必然会联系到生态系统上来。良好的生态系统具有明显的稳定性。这种稳定性是因为系统内具有内在的自动调节平衡的能力。这种调节平衡的能力主要决定于系统成分的多样性和能量流动、物质循环途径的复杂性。一般来说生... 说到环境问题,大家必然会联系到生态系统上来。良好的生态系统具有明显的稳定性。这种稳定性是因为系统内具有内在的自动调节平衡的能力。这种调节平衡的能力主要决定于系统成分的多样性和能量流动、物质循环途径的复杂性。一般来说生物的多样性是维持生态系统稳定性的重... 展开更多
关键词 生物多样性 生态系统稳定性 土地资源 农林复合系统 经济效益 稻田养萍 大白菜 耕地面积 稻田养鱼 生物高度多样性国家
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环境卫生与监测
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《中国妇幼卫生杂志》 1994年第1期17-35,共19页
关键词 环境科学 环境卫生 环境与健康 公共卫生 生物高度多样性国家 道路交通噪声 斑马鱼 气溶胶 大气真菌粒子 颗粒污泥
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A Survey of Fodder Plants in Mid-altitude Himalayan Rangelands of Uttarakhand,India
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作者 Vir Singh RD Gaur Babita Bohra 《Journal of Mountain Science》 SCIE CSCD 2008年第3期265-278,共14页
Himalayan rangelands, the crucial but by and large the neglected ecosystems, are an integral part of mountain farming systems. The present investigation is based on the extensive survey and collection of mid-altitude ... Himalayan rangelands, the crucial but by and large the neglected ecosystems, are an integral part of mountain farming systems. The present investigation is based on the extensive survey and collection of mid-altitude range plants from Almora and Champawat districts of Kumaun division in the Uttarakhand Himalaya in India, from September 2003 to June 2007. The rangelands studied were oak types, chirpine types, grass types and mixed ones. Some 300 species of grasses, other herbaceous plants, trees and shrubs were found in the mid-altitude rangelands. A sizeable number of species belonged to the family of Poaceae. The grass-dominated rangelands especially harboured a variety of grass species of good fodder value. The diversity of fodder plants is a proportion of the enormous biodiversity occurring in the parts of the Himalaya. A panorama of the biodiversity emerged in this study, which is of both intangible value and direct value for the livestock- and rangeland- dependent mountain communities, suggests a very high scope of the utilization of this natural and uncultivated biodiversity for supporting livestock- based livelihoods of the region. This biodiversity also has enormous bearing on the cultivated area of the region. 展开更多
关键词 RANGELANDS mid-altitude fodder plants BIODIVERSITY HIMALAYA Uttarakhand
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