[1]XU Xuexuan,MU Xingmin,JIANG Dingsheng,et al.Study of Rainfall Redistribution on Slope in Loess Hilly Region[J].Research of Soil and Water Conservation,2002,9(03):249-250,253.
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Study of Rainfall Redistribution on Slope in Loess Hilly Region
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
9
Number of periods:
2002年03期
Page number:
249-250,253
Column:
Public date:
1900-01-01
- Title:
- Study of Rainfall Redistribution on Slope in Loess Hilly Region
- Keywords:
- rainfall; runoff; redistribution on slope; loess hilly region
- CLC:
- S273.29
- DOI:
- -
- Abstract:
- Based on field study of rainfall redistribution on slope, authors put forward that the transition of rainfall to soil water is affected by slope length, land use form, etc.in both intensity and orientation.The results showed that soil could get more rainfall with slope length increasing from top to bottom.With a 20 m increase of slope length, the increase of incepted rainfall is 0.77 mm in grassland or 0.92 mm in shrub land.In the trial study, the 60 m slope length of shrub (or grassland) could reduce 4.91 mm (or 4.1 mm) of runoff compared with that of slope farmland, which accounts for 56.52% (47.16% )of runoff cut rate.K a representatives rate of water incepted from rainfall, was also in the same way.Forestry land had higher K a than that of grassland.It is also stated that the subsoil water movement is the main cause of slope soil water difference.
- References:
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[3]康绍忠, 梁银丽.蔡焕杰, 等.旱区水-土-作物关系及其最优调控原理[M].北京:中国农业出版社, 1998, 269-287.
[4]贾志军, 等.土壤含水率对坡面耕地产流入渗影响的研究[J].山西水土保持科技, 1990, (4):25-27.
[5]余新晓.朱金兆.晋西黄土区人工降雨条件下坡面径流规律的试验研究[A].中国科学技术协会首届青年学术年会论文集(农科分册)[C].北京:科学出版社, 1992.
[6]畅彩娥, 蒋定生, 刘梅, 等.降雨在凸凹形坡上再分配规律探讨[J].水土保持学报, 1989, (2):36-44.
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Last Update:
1900-01-01