草原与草坪
草原與草坪
초원여초평
GRASSLAND AND TURF
2013年
5期
27-32
,共6页
刘小平%任树梅%杨培岭
劉小平%任樹梅%楊培嶺
류소평%임수매%양배령
呼伦湖流域%草地%人工模拟降水%水土流失
呼倫湖流域%草地%人工模擬降水%水土流失
호륜호류역%초지%인공모의강수%수토류실
Hulun Lake watershed%simulated rainfall%water and soil erosion%runoff and sediment charac-teristics
以内蒙古呼伦贝尔市新巴尔虎右旗坡度草地为研究对象，采用野外人工模拟降水试验，研究典型区域内不同盖度草地在不同降水强度下的产流、产沙特征。研究表明：不同盖度草地在不同降水强度下初始产流时间、产流产沙量有显著差异；50%盖度草地60 mm/h 下径流含沙率最小，盖度越大截流、截沙能力明显增强。因此，降低放牧强度提高草地盖度可以有效减少草原水土流失现象。
以內矇古呼倫貝爾市新巴爾虎右旂坡度草地為研究對象，採用野外人工模擬降水試驗，研究典型區域內不同蓋度草地在不同降水彊度下的產流、產沙特徵。研究錶明：不同蓋度草地在不同降水彊度下初始產流時間、產流產沙量有顯著差異；50%蓋度草地60 mm/h 下徑流含沙率最小，蓋度越大截流、截沙能力明顯增彊。因此，降低放牧彊度提高草地蓋度可以有效減少草原水土流失現象。
이내몽고호륜패이시신파이호우기파도초지위연구대상，채용야외인공모의강수시험，연구전형구역내불동개도초지재불동강수강도하적산류、산사특정。연구표명：불동개도초지재불동강수강도하초시산류시간、산유산사량유현저차이；50%개도초지60 mm/h 하경류함사솔최소，개도월대절류、절사능력명현증강。인차，강저방목강도제고초지개도가이유효감소초원수토류실현상。
In order to reveal the impacts of grazing intensity on water and soil erosion of grassland,the grass-land under coverage in New Barag Right Banner was selected to measure the runoff and sediment at different rainfalls through field simulated rainfall method.The results show that the initial time and features of runoff and sediment were significantly different under different coverage and rainfalls.The grassland with higher cover-age could reduce the runoff.
