作　　者： ; ; (黄门福）; (李磊）;

机构地区： 华南农业大学农学院热带亚热带生态研究所

出　　处： 《广东农业科学》 2007年第5期51-54,共4页

摘　　要： 介绍了农林生态系统调节水资源数量作用,一是现实功能,即截流降水、减少径流、迟滞洪峰的截流作用;二是潜在库容,即涵蓄水源减轻流失、调节丰歉的蓄水能力。截流蓄水功能在不同区域、不同尺度下表现形式并不一致,核算方法也有所不同。为全面地核算该功能,首先要区分两类不同性质的功能和选取尽量简单的核算指标,再根据不同的参数将各子系统分别核算,同时评估人为活动的生态后果。珠江三角洲地区农林生态系统的截流作用并不突出,而蓄水能力非常重要。 The advances of the water conservation functions and assessment methods for Agro-forestry ecosystem are summarized and the operational principles are proposed in this paper. The function can be divided into two categories： one is the water interception effect which can reduce runoff and flooding by intercepting rainfall within an ecosystem ,the other is the water preservation effect which can decrease erosion and re-allocate water resources by storing water within an ecosystem. The methods used for assessment should be different according to the specific regions and its scales. For a good assessment, it is necessary to define its functions and sub-ecosystems, to consider human regulation, to choose simple indexes and important parameters. For the Zhujiang River Delta, the water interception effect is not so important, while the water preservation effect is very important.

关 键 词： 农林生态系统 水源保持 生态服务 截流畜水功能 核算

领　　域： [农业科学] [农业科学]