风化花岗岩强度侵蚀区土壤侵蚀治理探讨──伏岭试验区土壤侵蚀治理评析

Survey to Soil Erosion Harness in Strength Eroded Region of Winded Granite-Analysis of soil erosion harness in Fuling experimental area

对１９８５～１９９１年间伏岭试区综合治理的成效进行了总结。林地面积由６９０ｈｍ２增加到１４４４ｈｍ２，植被覆盖度由４３％提高到８０．５％，中度侵蚀面积由１８ｋｍ２减少到２．３ｋｍ２，并且提高了土壤水分和养分的保蓄和累积能力，取得了显著的经济和社会效益。

The results from the comprehensive harnesses in Fuling experimental area have been summarized.in the paper. During six years from 1985 to 1991, the forest area from 690hm2 is increased to 1 444hm2 by planting trees and afforestation. The vegetation cover degree from 43% is lit to 80.5%.The middle-extent eroded area from 18 km2 is reduced to 2.3 km2,and the abilitis of preserving soil water and nutrition have been greatly increased.The economic and social benefits obtained in the area are obvious.