Integrated Prevention and Control System for Soil Erosion in Typical Black Soil Region of

Integrated Prevention and Control System for Soil Erosion in Typical Black Soil Region of Northeast

China

SUN Li-ying;CAI Qiang-guo;CHEN Sheng-yong;HE Ji-jun;

【期刊名称】《亚洲农业研究：英文版》 【年(卷),期】2012(000)012

【摘要】The black soil region of Northeast China is one of the most important food production bases and commodity grain bases in China. However, the continual loss and degradation of precious black soil resources has led to direct threats to national food security and regional sustainable development. Therefore, it is necessary to summarize integrated prevention and control experience of small watersheds in black soil region of Northeast China. Tongshuang small watershed, a typical watershed in rolling hills of typical black soil areas in Northeast China, is selected as the study area. Based on nearly 50 years’ experience in prevention and control of soil and water loss, the structures and overall benefits of an integrated prevention and control system for soil and water loss are investigated. Then, the ’three defense lines’ tri-dimensional protection system with reasonable allocation of different types of soil and water control measures from the hill top to gully is systematically analyzed. The first line on the top hill can weaken and block uphill runoff and sediment, hold water resources

and improve soil property. The second line on the hill can truncate slope length, slow down the runoff velocity and reduce erosion energy. The third line in the gully is mainly composed of waterfall engineering, which can inhibit soil erosion and restore land resources. The ’three defense lines’ system is feasible for soil and water loss control of small watersheds in the typical black soil region of Northeast China. Through the application of the in Tongshuang small watershed, There are effective improvements in ecological conditions in Tongshuang small watershed after the application of ’three defense lines’ soil and water control system. Moreover, the integrated treatment paradigm for soil and water loss in typical black soil region is compared with that in loess region. The results of this study could offer references and experiences for other small watersheds in typical black soil region of Northeast China.

【总页数】6页(P.102-107)

【关键词】Typical black soil region Small watershed Soil and 【作者】SUN Li-ying;CAI Qiang-guo;CHEN Sheng-yong;HE Ji-jun;

【作者单位】Key Laboratory of Water Cycle and Related Land Surface Processes,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences;Heilongjiang Soil and Water Conservation Institute;Elementary Educational College,Capital Normal University;;

【正文语种】英文 【中图分类】S157 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_asian-agricultural-research_thesis/0201261877710.html 【相关文献】

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