黄土丘陵区不同土地利用方式产沙规律研究

自然杂志 ›› 2008, Vol. 30 ›› Issue (1): 28-31.

黄土丘陵区不同土地利用方式产沙规律研究

连振龙①，刘普灵②，徐学选③，贺萍④

①硕士研究生，②③研究员，中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西杨陵， 712100； ④ 安塞县农业经济管理站，陕西安， 717400）

收稿日期:2007-12-13 修回日期:2007-12-13 出版日期:2008-02-20 发布日期:2008-02-20

Study on Sediment-yield Characteristics of Different Land Use in Loess Hilly Region

Lian Zhenlong①，Liu Puling②，Xu Xuexuan③，He Ping④

①Graduate Student，②③Professor，Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources,
State Key Laboratory of Soil Erosion and Dryland Farming On the Losse Plateau, YangLing,712100 Shaanxi,China ;
④Asistont Engineer，AnSai Agro-economy Administration, AnSai, 717400，Shaanxi,China

Received:2007-12-13 Revised:2007-12-13 Online:2008-02-20 Published:2008-02-20

摘要/Abstract

摘要： 通过对黄土丘陵区退耕还林（草）坡地的人工模拟降雨实验资料的分析，认为区分导致该区草灌坡地不同产流方式的临界降雨强度为1.40～1.45mm/min，裸露坡耕地产沙强度产生明显变化的临界降雨强度为1.50～1.53mm/min。同时讨论了该区不同土地利用方式的产沙规律，给出了其相关方程。研究结果表明植被通过改变坡面产水产沙规律，对减少坡面侵蚀产沙作用显著。

Abstract: By analysis of the data of field simulated rainfalls, this paper makes the conclusion that in the Loess Hilly Region, the critical rainfall intensity that can distiguish the two main runoff-production modes on grass and bushes ranges from 1.40 mm/min to 1.45mm/min. And on bare sloping field, the critical rainfall intensity that make sharp transfomation of sediment-yield intensity ranges from 1.50mm/min to 1.53mm/min. At the same time, this paper talks over the sediment-yield charicterdistics of different land use, and finds their corelative equation. Results indicate the great benefits of vegetation on decreasing slope soil erosion.

连振龙;刘普灵;徐学选;贺萍. 黄土丘陵区不同土地利用方式产沙规律研究 [J]. 自然杂志, 2008, 30(1): 28-31.

Lian Zhenlong;Liu Puling;Xu Xuexuan;He Ping④. Study on Sediment-yield Characteristics of Different Land Use in Loess Hilly Region[J]. Chinese Journal of Nature, 2008, 30(1): 28-31.