水土保持学报2013，Vol.27Issue(2)：26-30,35,6.
陕北黄土高原不同植被类型下降雨对坡面径流侵蚀产沙的影响
The Effect of Rainfall for Runoff-erosion-sediment Yield Under the Different Vegetation Types in Loess Plateau of Northern Shaanxi Province
摘要
Abstract
According to the analysis of the five different vegetation types runoff plots precipitation which had impacts on runoff and sediment yield in Wuqi county abandoned lands on the Loess Plateau of northern Shaanxi, the effects of soil and water conservation on the different vegetation types of returning farmland to forest were found out. The results showed: (1) Rainfall and rain intensity had significant influence on the runoff. At the initial stage establishment of the runoff plots, Hippophae rhamnoides runoff plot was the best for reducing the runoff; with the growth of the plants, Pinus tabulac formis + Hippophae rhamnoides ( I ) runoff plot was the best for reducing the runoff. With the canopy density increased, the relativity of rainfall and rain intensity for runoff decreased. (2)Rainfall and rain intensity had significant influence on the sediment yield. Pinus tabulae formis + Hippophae rhamnoides ( I ) runoff plot was the best for reducing the runoff. With the growth of vegetation, the sediment yield scope was nearly stable. (3)Slope had significant influence on the runoff and sediment yield. Under the same rainfall, runoff and sediment yield became bigger and bigger with the rainfall increased. When the slope was nearly same, Pinus tabulae formis + Hippophae rhamnoides( I ) runoff plot was the best for reducing the runoff and sediment yield. Consequently, after returning farmland to forest, vegetation recovery had reduced the soil and water loss efficiently. At the initial stage establishment of the runoff plots, Hippophae rhamnoides pure forest was the most significant for soil and water conservation; with the vegetation growth, Pinus tabulae formis + Hippophae rhamnoides mixed forest was the most significant for soil and water conservation.关键词
植被类型/降雨量/降雨强度/径流量/产沙量Key words
vegetation types/ rainfall/ rain intensity/ runoff/ sediment yield分类
天文与地球科学引用本文复制引用
艾宁,魏天兴,朱清科..陕北黄土高原不同植被类型下降雨对坡面径流侵蚀产沙的影响[J].水土保持学报,2013,27(2):26-30,35,6.基金项目
国家"十二五"科技支撑计划项目"黄土及华北土石山区水土保持林体系构建技术研究与示范"(2011BAD38B06) （2011BAD38B06）
国家重点基础研究发展计划资助项目(2009CB825103) （2009CB825103）
