【摘要】 水土流失综合治理是提高水土流失地区环境人口容量的有效途径。以竣工的“长治”一期工程为例,在对研究区域的42个小流域进行了系统分类的基础上,以粮食消费和价值消费为人口的消费标准,分析了三峡库区42个小流域在治理前后的环境人口容量变化,以及水土保持投资规模与环境人口容量的关系。研究结果表明,长江三峡库区小流域可分为6类:经过水土流失综合治理后,42个小流域环境人口容量均有明显提高,其中的第4类小流域从提高环境人口容量的角度来看,合理的投资规模为5.50×104元/km2左右。更多还原

【Abstract】 Based on the soil erosion control project in the Three Gorges Reservoir area,42 watersheds were controlled in the first period from 1989 to 1994.The effects of the project on environmental human carrying capacity were studied in three aspects: watershed classification;environmental and human carrying capacities before and after control;impact of controlling investment on environmental human carrying capacity.Results show that 42 watersheds may be divided into 6 classes.The environmental human carrying capacity had greatly increased after control in terms of different consuming standards(food and money).The amount of rational controlling investment is about RMB $55 000 per square kilometer for the purpose of increasing environmental and human carrying capacity.更多还原