摘要
以中科院盐亭紫色土农业生态试验站的历年有关资料为基础 ,研究结果表明 :林地侵蚀模数较草地的高出约 30 % ,径流模数则减少 4 5 % ;林区耕地的侵蚀模数和径流模数较草地耕地的分别减少约 70 %和 2 5 % ,表明农林复合生态系统 (AAS)对耕地有较明显的水土保持作用。农林复合生态系统其年均径流量为非农林复合系统 (NAAS)的 1 2 ,洪峰模数相对后者削减约 4 0 % ,表明该系统对削减流域径流及其洪峰和防洪有明显作用。
Agro-forestry system is believed as a kind of sustainable agro-ecosystem. In this paper, agro-afforestation mainly inter-planted with Cypress and Alder (AAS) was investigated. The results based upon continuous data have shown the soil erosion rate of afforestation-land is higher by 30% than that of grassland, while the runoff modulus of the former is lower with 45% than that of the later. Meanwhile, AAS appeared a significant reduction of about 70% and 25% for soil and water loss of farming land respectivel...
出处
《山地学报》
CSCD
2001年第S1期60-64,共5页
Mountain Research
基金
中科院成都山地所"种子基金"
世行贷款支持的"中国中西部环境管理与保护"。
