甘肃省农业水土资源时空匹配格局

Spatial—temporal Match Pattern of Agricultural Water and Land Resources in Gansu Province

以甘肃省市域为评价单元,将其分为河西、陇东陇中、陇南和甘南四区,通过构建水土资源匹配测算模型,对该省2000年、2005年、2010年和2015年农业水土资源空间分布和匹配格局进行分析。结果表明:甘肃省水土资源现状为"耕地资源较丰富,水资源短缺,水土资源错位分布";2000—2015年农业水土资源匹配系数逐渐上升,2015年水土资源匹配系数为0.254万m^3/hm^2,低于全国平均水平;空间匹配程度形成"西高东低、北高南低"的特点,有一定的集聚态势,总体格局保持稳定。

Water and land resources matching degree was very important to the development of a regional agriculture. This paper took Gansu Province as the evaluation unit, and the 14 city of Gansu Province, which was divided into Hexi, Longdong and Longzhong, Longnan, Gannan, by con- structing the model of matching of water and land resources to analyze the spatial distribution, matching pattern and temporal and spatial variation of agricultural water and land resources in 2000,2005,2010 and 2015 in Gansu Province. The results showed that the status of water and land resources in Gansu Province was that cultivated land resources were rich, water shortage, water and land resources dislocation distribution. The matching coeffi- cient of agricultural water and land resources increased gradually in 2000 - 2015, the matching coefficient of water and land resources in 2015 was 0. 254 x 10^4 m3/hm2 , less than the national average. The spatial matching degree of agricultural water and land resources forms a pattern of ＂the west - high and east - low, north - high and south - low＂, and presented a certain concentration, the overall pattern of spatial matching degree remained stable during the period of 2000 - 2015.