畜牧业对江河源区生态环境演变的影响机理研究

草地畜牧业是江河源区主要的生产方式,也是人类生产活动影响这一地区生态环境演变的主要方式,在系统回顾和总结江河源区畜牧业经济发展的历史过程的基础上,提出畜牧业对环境的作用主要取决于游牧空间、畜群数量、畜群结构、草地的自我恢复能力,建立江河源区草地畜牧业对其生态环境演变作用的机理模型,利用该模型对畜牧业发展过程中出现的游牧和固定放牧2种模式对区域生态环境的演变进行了定性分析.

The evolvement mechanism of ecological environment in the source region of Yangtze River, Yellow River and Lanchangjiang River influenced by animal husbandry

Grassland animal husbandry in the source region of Yangtze River, Yellow River and Lanchangjiang River is the basic human production activity, it is also the main way that human activity impacts on ecological environment. Based on reviewing and summarizing the animal husbandry in the economic history of the region systemically, the article proposes factors by which animal husbandry influences evolvement of ecological environment, it is determined mainly by nomadic space, drove quantity, drove structure, self-recovery ability of grassland. By analyzing these factors, a mechanism model of animal husbandry function to evolvement of ecological environment in the region is built, the mechanism of two patterns of the nomadism and the fixed animal husbandry function to environment in the region are analyzed systemically by the model.