微型小区在石漠化地区水土流失监测中的应用  

Application of Mini-plot Experiment in Monitoring of Soil and Water Erosion in Rocky Desertification Area

作　　者：黄刚[1] 陈晓燕[1] 倪九派[1] 

机构地区：[1]西南大学,重庆北碚400715

出　　处：《贵州农业科学》2009年第1期106-108,共3页Guizhou Agricultural Sciences

基　　金：科技部;国家科技支撑计划课题--典型脆弱生态系统重建技术与示范项目"重庆地区喀斯特山地退化生态系统综合整治技术与模式"(2006BAC01A16)

摘　　要：为深入研究石漠化地区水土流失机理,在大型试验条件不具备的地区,应用微型小区进行试验性观测。结果表明:1)土壤含水量:林地<10°坡耕地<5°坡耕地<坡改梯地;2)径流量:林地<坡改梯地<5°坡耕地<10°坡耕地;3)3种农耕地均表现随坡度增加,侵蚀泥沙量增大;4)不同季节农作物种类不同、长势不同形成不同的植被覆盖,对该地的水土保持有较大的正面作用。The mini-plot experiment was used to study the mechanism of soil and water erosion in rocky desertification area. The results showed that there was woodland〈slope cropland with 10°〈slope cropland with 5°〈terraced cropland in soil water content, there was woodland〈terraced cropland〈slope cropland with 5°〈slope cropland with 10° in volume of run-off, the level of soil and water erosion increased with increase of slope degree in three types of croplands, and the vegetation cover formed by different crops and vigor in different seasons had a positive effect on its soil and water conservation.

关 键 词：微型小区 石漠化 水土流失 监测 

分 类 号：S157.1[农业科学—土壤学]