| 草地覆盖对伊犁河谷地表产流产沙的影响因素分析 |
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| 引用本文： | 张少博,李建贵,黄俊华,张文太,杨文英,王飞,张佩佩.草地覆盖对伊犁河谷地表产流产沙的影响因素分析[J].江西农业大学学报,2016(5):995-1001. |
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| 作者姓名： | 张少博 李建贵 黄俊华 张文太 杨文英 王飞 张佩佩 |
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| 作者单位： | 1. 新疆农业大学 林业研究所,新疆 乌鲁木齐,830052;2. 新疆农业大学 新疆土壤与植物生态过程实验室，草业与环境科学学院，新疆 乌鲁木齐 830052;3. 新疆伊犁哈萨克自治州水利局,新疆 伊宁,835000 |
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| 基金项目： | 国家科技支撑计划项目(2014BAC15B03)，自治区青年科技创新人才培养工程项目(2014731010) Project supported by the National Science and Technology Support Plan(2014BAC15B03)，the Young Tal-ents Cultivation Program for Science and Technology Innovation in Xinjiang(2014731010) |
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| 摘 要： | 伊犁河谷作为新疆水土流失较为严重的地区之一,探讨如何在此生态环境脆弱区利用植被进行水土保持工作至关重要。采用野外人工模拟降雨的方法,选择不同植被覆盖度的小区(80%、60%、40%、20%、10%、0%),从覆盖度与地表径流速率,以其与径流含沙量之间的定量关系出发进行试验。结果表明,随着植被覆盖度的增加,径流系数变小,径流速率和径流含沙量明显降低。同时,40%植被覆盖度可以作为该区域一个参考的临界值,即植被覆盖度达到这个点时,就可以有效地对该区域进行水土保持。
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| 关 键 词： | 模拟降雨 植被覆盖率 水土流失 伊犁河谷 植被覆盖临界值 |
Impact of the Grass Coverage on Runoff and Sediment in the Yili River Valley |
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| Abstract: | The Yili valley basin is one of the severe soil and water loss regions in Xinjiang.It is necessary to conserve water and soil conservation in this area effectively by grass.Using artificial rainfall simulation in the field,choosing different vegetation coverage plots(80%,60%,40%,20%,10%,0%),to study the quantitative relationships among coverage,surface runoff rate and sediment concentration. The results showed that with the increase of vegetation coverage the surface runoff rate decreased,also the sediment concentration;at the same time,the critical value of 40% of vegetation coverage could be used as a reference,when the vegetation cover?age reached this point,soil and water conservation could be effectively realized in the region. |
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| Keywords: | simulated rainfall vegetation coverage soil and water loss Yili river valley critical value of vegetation |
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