摘要
降雨空间分布对于区域水文模拟、水资源规划与管理、旱涝灾害评估以及水土保持等均具有基础性意义。利用鄱阳湖流域16个气象站点1960—2008年共49a的逐月降雨资料,运用地统计学理论、结合GIS技术研究了鄱阳湖流域降雨空间分布特征。结果表明:(1)流域多年平均降雨的空间分布整体呈现为由西南向东北,以及由西北向东北梯次递增的趋势;(2)代际降雨高值中心一般发生在庐山和玉山一带,低值中心发生在赣南赣州、遂川一带;(3)鄱阳湖流域16个气象站点各季节多年平均降雨属弱或中等变异,在该流域适合选用高斯模型进行季节性降雨空间插值。
Monthly rainfall data in 16meteorological stations in Poyang lake basin through 1960to 2008 were used to analyze spatial distribution of rainfall based on geostatistic and GIS technology.The results show that：（1）the spatial distribution of the average annual rainfall shows an increasing tendency from the southwest to the northeast and from the northwest to northeast;（2）the high value center of inter-generational rainfall have generally arisen in Lushan Mountain and Yushan,and the low value center of that occurs in Ganzhou,Suichuan of the southern of Jiangxi;（3）spatial analysis of the seasonal rainfall change shows that the seasonal average annual rainfalls belong to a weak or moderate variability level.In addition,it is good to make use of Gaussian model to simulate spatial distribution of seasonal rainfall,so Gaussian model should be used for seasonal rainfall spatial interpolation.
出处
《水土保持研究》
CSCD
北大核心
2013年第4期34-38,43,共6页
Research of Soil and Water Conservation
基金
国家自然科学基金项目(41001158
41271500)
中国博士后基金(20090461148)
虚拟地理环境教育部重点实验室开放基金(2010VGE05)
