PDF Download

[1]WANG Ming-gang,LI Sen,JIN Chang-ning.Experimental Study on Process of Rainfall-Infiltration-Runoff Generation on Rocky Desertification Slope in North of Guangdong Province[J].Research of Soil and Water Conservation,2011,18(06):57-61.

Copy

Experimental Study on Process of Rainfall-Infiltration-Runoff Generation on Rocky Desertification Slope in North of Guangdong Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 06 Page number: 57-61 Column: Public date: 2011-12-20

Title:: Experimental Study on Process of Rainfall-Infiltration-Runoff Generation on Rocky Desertification Slope in North of Guangdong Province

Author(s):: WANG Ming-gang¹, LI Sen^2,3, JIN Chang-ning³; 1. Guangzhou Vocational College of Technology & Business, Guangzhou 511442, China;
2. College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China;
3. Institute of Resources and Environmental Science, Foshan University, Foshan, Guangdong 528000, China

Keywords:: simulated rainfall; rocky desertification; slope; infiltration; runoff; north of Guangdong Province

CLC:: S152.7⁺2

DOI:: -

Abstract:: Simulated rain is a valid tool to examine soil erosion on sloping land. Experiments under 36 events of simulated rainfall with intensities of 0.3 mm/min, 0.48 mm/min, 0.72 mm/min and 1.08 mm/min and different duration were carried out on three different types of lands(bare land, grassland and farmland) in typical rocky desertification land slope in northern Guangdong Province. Results show that the runoff processes in different lands have features with the fluctuating nature of the valley and peak due to rock heterogeneity factors. The fluctuation range of initial runoff curve was large. There is a very clear linear relationship between reaching stable surface runoff intensity between the rainfall intensity. Land surface runoff intensites on three kinds of land use types increase with the rise of rainfall intensity. The largest and significant increment of runoff occurs on bare land. Although the infiltration rate also increases with the rise of rainfall intensity, the increment is significantly less than that of runoff; the least increment is observed on bare land, however, the infiltaration basically remains stable. Under the case of less initial soil moisture, the time of flow production rapidly shortens with increase of the rainfall intensity; there is an obvious power function relation between initial soil moisture and rainfall intensity. Surface runoff on three types of land produces when the rainfall amount meets a certain level.

References:: [1] 袁道先.岩溶地区的地质环境和水文生态问题[J].南方国土资源, 2003(1):22-25.
[2] 王玉宽, 王占礼, 周佩华.黄土高原坡面降雨产流过程的试验分析[J].水土保持学报, 1991, 5(2):25-31.
[3] 王世杰.喀斯特石漠化概念的演绎及其科学内涵探讨[J].中国岩溶, 2002, 21(2):101-104.
[4] 龙明忠.喀斯特峡谷区不同等级石漠化土壤侵蚀对比研究[J].贵州师范大学报, 2006, 24(1):25-30.
[5] 王占礼, 黄新会, 张振国, 等.黄土裸坡降雨产流过程试验研究[J].水土保持通报, 2005, 25(4):1-4.
[6] 李阳兵.花江喀斯特峡谷地区石漠化成因初探[J].水文地质工程地质, 2004(6):37-42.
[7] 王德炉, 朱守谦, 黄宝龙, 等.石漠化的概念及其内涵[J].南京林业大学学报:自然科学版, 2004, 28(6):87-90.
[8] 苏维词.中国西南岩溶山区石漠化的现状成因及治理的优化模式[J].水土保持通报, 2002, 22(2):29-32.
[9] 彭建, 杨明德.贵州花江喀斯特峡谷水土流失状态分析[J].山地学报, 2001, 19(6):511-515.
[10] 杨聪, 于静洁, 刘昌明, 等.华北山区坡地产流规律试验研究[J].地理学报, 2005, 60(6):1021-1028.

Similar References:

Memo

Last Update: 1900-01-01