农业工程学报2011，Vol.27Issue(4)：22-27,6.DOI:10.3969/j.issn.1002-6819.2011.04.005
坡面土地利用格局变化的水土保持效应
Soil-water conservation effects of slope land use pattern changes
摘要
Abstract
Objective of this study was to understand the soil-water conservation effects of slope land use pattern changes on the Loess Plateau.Korshinsk peashrub, plowland (mung bean) and alfalfa land were selected to develop mixed land use patterns by spatial arrangement.Through two years (2007-2008) field observations, the effects of land use patterns on soil moisture, soil bulk density and runoff-sediment yield were studied in plot scale.Kriging interpolation calculation showed that soil surface moisture and bulk density in mixed land-use pattern plots (including korshinsk peashrub-mung bean-alfalfa plot; alfalfa- mung bean- korshinsk peashrub plot; korshinsk peashrub- alfalfa- mung bean plot; mung beanalfalfa- korshinsk peashrub plot) had apparent characteristics of plaque mosaic pattern, which were uniform with land-use structures and easy to form self-regulation system for runoff-erosion controlling.These land use patterns appeared good effect on absorbing the runoff and trapped sediments, compared to single plowland usage.Korshinsk peashrub-mung bean-alfalfa plot had the smallest annual erosion modulus, and the erosion reduction rate in the two years research reached to 98％ and 94％, respectively.Creating a mosaic pattern by land use arrangement was one of the important measures in controlling soil erosion.关键词
土地利用/空间变异测量/土壤保持/产流产沙/水蚀风蚀交错带/黄土高原Key words
Land use/ spatial variables/ soil conservation/ runoff-sediment yield/ wind-water erosion crisscross region/loess plateau分类
资源环境引用本文复制引用
佘冬立,邵明安,薛亚锋,俞双恩..坡面土地利用格局变化的水土保持效应[J].农业工程学报,2011,27(4):22-27,6.基金项目
南方地区高效灌排与农业水土环境教育部重点实验室开放基金(IDA003) （IDA003）
中央高校基本科研业务费专项资金资助项目(2009B02014)黄土高原土壤侵蚀与旱地农业国家重点实验室基金资助项目(10501-250). （2009B02014）
