Effects of Bahia Grass Cover and Mulch on Runoff and Sediment Yield of Sloping Red Soil in Southern China  

作　　者：LI Xin-Hu ZHANG Zhan-Yu YANG Jie ZHANG Guo-Hua WANG Bin 

机构地区：[1]College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098 (China) [2]Key Laboratory of Efficient Irrigation-Drainage and Agricultural Soil Hohai University, Nanjing 210098 (China) [3]Jiangxi Institute of Soil and Water Conservation, Nanchan9 330029 (China) [4]China Irrigation and Drainage Development Center, Beijing 100054 (China) [5]College of Water Conservancy and Building Engineering, Northeast Agricultural University, Harbin 150030 (China)

出　　处：《Pedosphere》2011年第2期238-243,共6页土壤圈（英文版）

基　　金：Supported by the National Natural Science Foundation of China (Nos. 40830640 and 41071026);the Plan for Innovation of Graduate Students of Jiangsu Province,China (No. CX09B_168Z)

摘　　要：Rainfall,runoff (surface runoff,interflow and groundwater runoff) and soil loss from 5 m × 15 m plots were recorded for 5 years (2001-2005) in an experiment with three treatments (cover,mulch and bare ground) on sloping red soil in southern China.Surface runoff and erosion from the Bahia grass (Paspalum notatum Flugge) cover plot (A) and mulch plot (B) during the 5 years were low,despite the occurrence of potentially erosive rains.In contrast,the bare plot (C) had both the highest surface runoff coefficient and the highest sediment yield.There were significant differences in interflow and surface runoff and no significant difference in groundwater runoff among plots.The runoff coefficients and duration of interflow and groundwater runoff were in the order plot B > plot A > plot C.Effects of Bahia grass cover were excellent,indicating that the use of Bahia grass cover can be a simple and feasible practice for soil and water conservation on sloping red soil in the region.Rainfall, runoff （surface runoff, interflow and groundwater runoff） and soil loss from 5 m ×15 m plots were recorded for 5 years （2001-2005） in an experiment with three treatments （cover, mulch and bare ground） on sloping red soil in southern China. Surface runoff and erosion from the Bahia grass （Paspalum notatum Flugge） cover plot （A） and mulch plot （B） during the 5 years were low, despite the occurrence of potentially erosive rains. In contrast, the bare plot （C） had both the highest surface runoff coefficient and the highest sediment yield. There were significant differences in interflow and surface runoff and no significant difference in groundwater runoff among plots. The runoff coefficients and duration of interflow and groundwater runoff were in the order plot B ~ plot A 〉 plot C. Effects of Bahia grass cover were excellent, indicating that the use of Bahia grass cover can be a simple and feasible practice for soil and water conservation on sloping red soil in the region.

关 键 词：groundwater runoff INTERFLOW LYSIMETER soil properties surface runoff 

分 类 号：S157.1[农业科学—土壤学] S666.01[农业科学—农业基础科学]