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[1]LIU Yan,LIU Xue-quan,CUI Hong-xia,et al.A Preliminary Study on Law of Runoff and Sand Yield on Yellow Soil Slope Surface in Low Hilly of the Middle Reaches of the Yangtze River[J].Research of Soil and Water Conservation,2010,17(01):149-153.

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A Preliminary Study on Law of Runoff and Sand Yield on Yellow Soil Slope Surface in Low Hilly of the Middle Reaches of the Yangtze River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 01 Page number: 149-153 Column: Public date: 2010-02-20

Title:: A Preliminary Study on Law of Runoff and Sand Yield on Yellow Soil Slope Surface in Low Hilly of the Middle Reaches of the Yangtze River

Author(s):: LIU Yan^1,2,3, LIU Xue-quan², CUI Hong-xia², ZHOU Jin-xing³, HE Bing-hui¹; 1. Institute of Resource and Environment, Southwest University, Chongqing, 400716, China;
2. Hubei Academy of Forestry, Wuhan, 430079, China;
3. Chinese Academy of Forestry, Bejing, 100091, China

Keywords:: simulated rainfall; yellow soil slope in low hilly; runoff and sand yield process; rainfall duration

CLC:: S157.1

DOI:: -

Abstract:: It obtains the change characteristics of runoff and sand yield process of 2 chestnut terrace and 2 peanut agricultural land(one terrace and one slope land) under the same rainfall intensity condition of Xiangbizui small watershed in Hubei Province,which from field of artificial simulated rainfall experiments.The results showed that:Under the premise of some conditions(water and heat status,soil,small terrain,and so on) are comparatively consistent,initial losses and initial yield duration of the 4 runoff plots manifest as chestnut terrace 1>chestnut terrace 2>peanut terrace>peanut slope land;Analytical results combine with runoff and sand yielding intensity process line and cumulative runoff and sand yield process line in different runoff plots showed that the terrace’s effect of soil and water conservation is markedly better than slope land’s,the runoff and sand yield process of slope land is more complex;About blocking runoff and increasing infiltration forestland are clearly better than the agricultural land;The differences of water and soil loss characteristics between chestnut terrace 1 and chestnut terrace 2 showed that vegetation cover,species diversity have a great impact on runoff and sand yield process on the land surface;The relevant polynomial equation of cumulative runoff,sand yield and rainfall duration of each simulated rainfall meet "Y = ax²+bx+c" form.

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