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| 黄土高原人为加速侵蚀下水土与养分流失耦合研究 | |
| 引用本文： | 陈磊,李占斌,李鹏,穆军,贾莲莲.黄土高原人为加速侵蚀下水土与养分流失耦合研究[J].水土保持学报,2011,25(3):7-11. |
| 作者姓名： | 陈磊 李占斌 李鹏 穆军 贾莲莲 |
| 作者单位： | 1. 西安理工大学西北水资源与环境生态教育部重点实验室,陕西西安710048;中科院水利部水土保持研究所,陕西杨凌712100 2. 西安理工大学西北水资源与环境生态教育部重点实验室,陕西西安,710048 3. 西安市环境保护科学院,陕西西安,710002 |
| 基金项目： | 国家重点基础研究发展计划(2011CB403302); 国家自然科学基金(40971161) |
| 摘 要： | 利用野外模拟人工降雨试验,对人为加速侵蚀下耕地、草地和林地的水土与养分流失进行耦合研究.结果表明:人为加速侵蚀后养分随径流和泥沙的迁移,导致土壤肥力下降,其中泥沙结合态是养分流失的主要途径.耕地翻耕后加速土壤侵蚀,除产流量减少22.4%外,侵蚀速率和产沙量分别增加了27.1%和27.3%;总有机碳、总氮和总磷流失量分别... |
| 关 键 词： | 径流 泥沙 草地 林地 养分流失 |
Study on the Coupling Effect of Erosion and Nutrient Lost under Manmade Accelerated Erosion on Loess Plateau |
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| CHEN Lei,LI Zhan-bin,LI Peng,MU Jun,JIA Lian-lian.Study on the Coupling Effect of Erosion and Nutrient Lost under Manmade Accelerated Erosion on Loess Plateau[J].Journal of Soil and Water Conservation,2011,25(3):7-11. | |
| Authors: | CHEN Lei LI Zhan-bin LI Peng MU Jun JIA Lian-lian |
| Institution: | CHEN Lei1,2,LI Zhan-bin1,LI Peng1,MU Jun3,JIA Lian-lian1(1.Key Lab.of Northwest Water Resources and Environment Ecology of MOE at Xaut,Xi'an,Shaanxi 710048,2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Fesources,Yangling,Shaanxi 712100,3.Xi'an Research Academic of Environmental Sciences,Shaanxi,710002) |
| Abstract: | The coupling effect on erosion and nutrient lost of arable,grassland and woodland,were studied based on different land-use patterns,with simulated rainfall equipment.The results showed that the runoff and sediment caused the soil became less fertile.The nutrient in sediment was higher than that in run-off,which was the main ways of nutrient losses.Man-made accelerated erosion caused by arable land tillage,soil erosion rate(SER) and sediment yield(SY) increased by 27.1% and 27.3%,but runoff yield(RY) decreas... |
| Keywords: | runoff sediment grassland woodland nutrient loss |
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