【摘要】 青海省天然草地由于粗放经营管理 ,过度放牧 ,鼠虫和人类活动的影响 ,加之严酷自然条件的制约 ,生态环境日趋恶化 ,草地退化十分严重。据调查 ,全省“黑土滩”面积约为 70 3.1 9× 1 0 4 hm2 ,此类草地产草量为 40 0 .5kg/hm2 ,植被平均盖度为 45.42 %。草地退化严重制约着畜牧业的发展。为了使“黑土滩”恢复其生产力 ,必须进行综合治理 ,使草地生态系统向良性循环发展 ,提出了几项综合治理措施更多还原

【Abstract】 Envoironment and grassland is degradation for extensive management, over-taking, rodents and human being action in Qinghai province. For investigation, there are 7031900ha "Black soil" and produce forages 400.5kg/m 2, average cover of plants is 45.42%. development of livestock have been restricted. Some integrating measurement have been put out to recover the productivity.更多还原