摘要
采用基于生态系统健康的生态承载力评价模型与方法,研究了黄河流域青海片生态承载力的动态变化。结果表明:生态承载力指数随时间的推移呈下降趋势,由1985年的0.5096降至1999年的0.4700和2015年的0.4263;黄河流域青海片生态系统健康等级较低,多处于亚健康状态或不健康状态;空间上,以湟水流域和黄河干流区域生态系统健康等级最低;各项分指数中,以资源环境承载力指数相应的生态系统健康等级最高,多处于健康状态;人类潜力和生态弹性力是制约黄河流域青海片生态系统健康的主要因素。
By using the methods of quantitative ecological carrying capacity （ ECC ） appraisal, the dynamic changes of the ECC of Yellow River Basin in Qinghai Province were investigated. The results showed that the ECC index decreased from 0. 5096 in 1985 to 0. 4700 in 1999, and would be 0. 4263 in 2015. The ecosystem health in studied region was mostly at sub- or unhealthy level, and Huangshui Basin and the basins of Yellow River mainstream were at the lowest level. Among the sub-indices of ECC, the ecosystem health level corresponding to resources environmental carrying capacity was the highest. Human potential and ecological resilience were the two main factors affecting the ecosystem health of the studied region.
出处
《生态学杂志》
CAS
CSCD
北大核心
2007年第3期406-412,共7页
Chinese Journal of Ecology
基金
中国博士后科学基金资助项目(023299016)。
关键词
黄河流域青海片
生态承载力
生态系统健康
动态评价
Yellow River Basin in Qinghai Province
ecological carrying capacity
ecosystem health
dynamic assessment.
