黄土丘陵区燕沟流域水土流失治理的水沙效应

被引:14
作者
徐学选
刘普灵
琚彤军
史新合
宇苗子
机构
[1] 西北农林科技大学水土保持研究所
关键词
径流; 泥沙; 生态; 燕沟流域; 黄土丘陵区;
D O I
暂无
中图分类号
S157.1 [水土流失的原因及其防治];
学科分类号
摘要
黄土高原大规模的生态恢复必将对水土流失区的生态环境产生深刻影响,其流域尺度的水文效应对理解生态环境响应尤其重要。通过对延安燕沟流域1998-2010年的生态系统恢复进程及其流域水沙变化过程耦合分析表明:燕沟流域治理后径流泥沙发生了深刻变化,尽管流域总径流仍随降雨波动,但洪水径流显著减少,径流中泥沙含量迅速减少,总输沙进一步减少。这种变化趋势与流域进行的治理措施、治理阶段吻合;梯田、坝地等工程措施使得流域径流显著减少,林草植被恢复使得径流减少的同时,径流含沙率减少幅度更大。工程措施配以植被措施基本可以做到泥不出沟。因此,黄土丘陵区治理流域应该生物措施与工程措施并重,达到控制水土流失的目的。
引用
收藏
页码:113 / 117
页数:5
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