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[1]ZHENG Peilong,LI Yunxia,ZHAO Yang,et al.Effects of Climate Variation and Land Use Change on Runoff in Jinghe Basin of the Loess Plateau[J].Research of Soil and Water Conservation,2015,22(05):20-24.

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Effects of Climate Variation and Land Use Change on Runoff in Jinghe Basin of the Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 05 Page number: 20-24 Column: Public date: 2015-10-28

Title:: Effects of Climate Variation and Land Use Change on Runoff in Jinghe Basin of the Loess Plateau

Author(s):: ZHENG Peilong¹, LI Yunxia², ZHAO Yang³, ZHANG Xiaoming³, KOU Xinyue⁴, XU Xiaowu⁴; 1. Beijing Water Conservation Ecological Engineering Consulting Co., Ltd., Beijing 100053, China;
2. Northern Investigation of China Water Resources, Design and Research Co., Ltd., TianJin 300222, China;
3. China Institute of Water Resources and Hydropower Research, Beijing 100048, China;
4. Beijing Forestry University, Beijing 100083, China

Keywords:: runoff and sediment; land use change; extreme characteristic; Jinghe Basin

CLC:: S157;P333

DOI:: -

Abstract:: In the Loess Plateau, study on the response mechanism of runoff and sediment to land use change is of great importance for ecological regulation decision-making and the optimal allocation of soil and water conservation measures. Therefore, based on Jinghe Basin in the Loess Plateau as the research example, the Mann-Kendall test, accumulative-annual anomaly and double mass analysis were used to quantitatively examine the precipitation, runoff and sediment change and the characteristics of land use change in nearly 40 years, then the influences of the climate and land use change on runoff and sediment were discussed. Results showed that: (1) trends of annual precipitation of Jinghe Basin were different and not obvious; annual runoff depth and sediment transport modulus of the five watersheds showed the significant decline, especially in the 1980s—1990s; (2) it turned out that land use structure greatly changed in recent decades; major changes were the conversions of slope land to terrace, cultivated land to forestland and grassland, sandy bare land to grassland and thickets; (3) the influence of human activities on runoff and sediment contribution rates were 82.90% and 94.10%, respectively, the impacts of climate factors were very slight.

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