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Position: Home > Articles > Calculation and Evaluation of Factor Value of Water and Soil Conservation Measures of Southwest Karst Region Soil and Water Conservation in China 2014 (10) 50-53+71

西南喀斯特地区水土保持措施因子值计算与评价

作  者：
郭继成;顾再柯;苑爽;张科利
单  位：
贵州省水土保持监测站;北京师范大学地理学与遥感科学学院
关键词：
水土保持措施;B、E、T因子值;西南喀斯特地区
摘  要：
定量评价水土保持措施在防治土壤侵蚀中的作用(因子值)是土地利用和水土保持规划的重要依据。运用位于典型西南喀斯特地区3个野外径流场的实测土壤侵蚀数据,计算不同水土保持措施的B、E、T因子值及等高耕作条件下主要农作物——马铃薯、玉米在不同生长阶段的T因子值,结果表明:B因子值介于0.000 7~0.023 4之间,等高耕作条件下马铃薯作物小区T因子值(0.087 2)大于玉米作物小区(0.006 9),水平梯田措施E因子值为0.124 4;等高耕作条件下马铃薯、玉米在不同生长时期的T因子值大小关系为苗期>发育期>残茬期>成熟期,马铃薯在发育期、成熟期、残茬期的T因子值为玉米在相应时期的10倍左右。
译  名：
Calculation and Evaluation of Factor Value of Water and Soil Conservation Measures of Southwest Karst Region
作  者：
GUO Ji-cheng;GU Zai-ke;YUAN Shuang;School of Geography and Remote Sensing Science,Beijing Normal University;Guizhou Provincial Soil and Water Conservation Monitoring Station;
关键词：
soil and water conservation measures;;B,E and T factor values;;Karst region in southwest
摘  要：
Quantitatively evaluating the function(factor values) of soil and water conservation measures in the prevention and control of soil erosion is of an important basis for the planning of land utilization and soil and water conservation. The paper used the observed soil erosion data of three field runoff plots in the typical Karst region in southwest of China and calculated B,E and T factor values of using different soil and water conservation measures and the T factor value of the main crops of potato and maize in different growing periods under the conditions of contour tillage. The outcomes show that a) B factor value is in the range of 0. 000 7-0. 023 4,T factor value(0. 087 2) of potato plots under the conditions of contour tillage is greater than the maize plots(0. 006 9),and E factor value of level terrace measures is 0. 124 4; b)the relationship of T factor values of potato and maize in different growing periods under the conditions of contour tillage is seedling stage >growing stage > stubble stage > mature stage; the T factor value of potato in the stages of growing,maturity and stubble is about 10 times of that of maize in the corresponding period.

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