| The Effects of Land Uses on Purplish Soil Erosion in Hilly Area of Sichuan Province, China |
| |
| 作者姓名： | LIU Gangcai ZHANG Jianhui TIAN Guanglong WEI Chaofu College of Resources and Environment Southwest Agriculture University Chongqing China Institute of Mountain Hazard and Environment Chinese Academy of Science & Water Resources Ministry P. O. Box Chengdu Sichuan China Research and Development |
| |
| 作者单位： | LIU Gangcai 1，2，ZHANG Jianhui，TIAN Guanglong，WEI Chaofu 1 College of Resources and Environment，Southwest Agriculture University，Chongqing 400716，China 2 Institute of Mountain Hazard and Environment，Chinese Academy of Science & Water Resources Ministry，P. O. Box 417，Chengdu，Sichuan 610041，China 3 Research and Development Department，Metropolitan Water Reclamation District of Greater Chicago，6001 W. Pershing Road，Cicero，IL 60804-4112，USA |
| |
| 摘 要： | 1 Introduction Food grain productivity of dry land per capitahas declined significantly during the past fewdecades (Parr et al. 1990). Bowman et al. (1990)and Blaikie (1985) indicated that the greatest lossin productivity comes from soil loss, withsecondary effects from loss of nutrients due toreduced organic matter and increased soil bulkdensity. Soil erosion has major ecological andeconomic consequences in densely populatedChina, particularly, in a large agriculture province,Sichuan…
|
| 关 键 词： | 四川 中国 土地利用 丘陵地区 紫土侵蚀 |
| 收稿时间： | 22 November 2004 |
The effects of land uses on purplish soil erosion in hilly area of Sichuan Province,China |
| |
| LIU Gangcai ,,ZHANG Jianhui,TIAN Guanglong,WEI Chaofu College of Resources and Environment,Southwest Agriculture University,Chongqing ,China Institute of Mountain Hazard and Environment,Chinese Academy of Science & Water Resources Ministry,P. O. Box ,Chengdu,Sichuan ,China Research and Development.The Effects of Land Uses on Purplish Soil Erosion in Hilly Area of Sichuan Province, China[J].Journal of Mountain Science,2005,2(1):68-75. |
| |
| Authors: | Liu Gangcai Zhang Jianhui Tian Guanglong Wei Chaofu |
| |
| Institution: | (1) College of Resources and Environment, Southwest Agriculture University, 400716 Chongqing, China;(2) Institute of Mountain Hazard and Environment, Chinese Academy of Science & Water Resources Ministry, P. O. Box 417, 610041 Chengdu, Sichuan, China;(3) Research and Development Department, Metropolitan Water Reclamation District of Greater Chicago, 6001 W. Pershing Road, 60804-4112 Cicero, IL, USA |
| |
| Abstract: | In order to evaluate the soil erosion rate for different land uses and make recommendations on land-use alternatives for erosion control in hilly and mountain areas on a Purplish soil (Regosols in FAO taxonomy), experimental data were obtained from three continuously monitored sites located at Yanting, Nanbu and Pengxi of Sichuan province. The data showed that the rank of erosion rate is farmland > unfenced grassland > fenced grassland > forestland. The erosion rate of farmland was more than 3 times higher than that of forestland and fenced grassland, indicating that restricting human activity is crucial for over-erosion. The erodibility was higher at the initial period of rainy season for all the three types of land use. The erosion rates of fenced grassland and mature afforestation land were not proportional to rainfall intensity because these land uses changed impact energy of the rainfall. This research showed that restricting human activity, intensifying the management of initial period of rainy season, and increasing the cover rate of land surface are the three major measures for soil erosion prevention. It is recommended that farmers should cease cultivation on farmland at the top of hills and steep slope land return those lands back to grassland or forestland. |
| |
| Keywords: | Soil erosion land use hilly area purplish soil |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
|
