Experimental Study of Hydrological Processes in Rock Desertification Area of Northern Guangdong
详细信息
- 责任者：Lu Guanyao (Resources and Environmental Science Research Institute ; Foshan University ; Foshan 528000 ; China) ; Li Sen
- 刊名：Scientia Geographica Sinica
- 出版年：2013
- 卷期：33(4)
- 关键词：石漠化 ; rock desertification ; 广东 ; Guangdong
- 页码：p.481-488
- 图表：illus., 5 tables, 20 refs
- 分类号：1800
- issnNo：ISSN1000-0690
- isbnNo：CN22-1124/P
摘要
Some plots with different stages of rock desertification were selected in rocky desertification area of northern Guangdong to study the hydrological process of there through artificial simulation rainfall test.The results show that: the maximum ground surface vegetation interception of rainfall is decreasing with the deepening of rock desertification,and the maximum decreasing range appears in severely stage to very severely stage which is more than six times.Soil moisture capacity is turning from severely stage to very severely stage.The surface runoff appears same characters in moderately and severely rocky desertified land,but has obviously difference in slightly and very severely rocky desertified land.When rainfall intensity is 30-50 mm/h,the highest total runoff of runoff yield for 35 min is in moderately rocky desertified land.When rainfall intensity is 51~60 mm/h,the highest total runoff of runoff yield for 35 min is in very severely rocky desertified land.When rainfall intensity is 51~60 mm/h,the highest total runoff of runoff yield for 35 min is in severely rocky desertified land.After artificial simulation rainfall with 35 mm/h rainfall intensity in plots with different stages of rock desertification for 60 minutes,0.6% to 2.71% rainwater is intercepted by vegetation and litter,2% to 53.31% rainwater is absorbed by soil,2.18% to 7.37% rainwater has transformed to surface runoff,41.8% ~93.41% rainwater has leaked and formed groundwater.
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