基于GIS技术的甘肃河西啤酒大麦种植气候区划

Climate Regionalization of Malting Barley Planting Area Based on GIS Technology in Hexi of Gansu Province

为了科学、合理地利用当地气候资源，为甘肃省河西地区啤酒大麦生产合理规划布局和可持续发展提供科学依据。笔者根据啤酒大麦生长所需的气候条件，并结合前人研究结果，选取年≥0℃积温、幼穗分化期（5月下旬-6月上旬）和灌桨期（6月下旬-7月中旬）的平均温度及年日照时数4项气候要素作为啤酒大麦的气候区划指标，用甘肃河西地区20个气象观测站19810010年标准气候统计资料和1：25万地理信息资料，通过多元回归方法建立了区划因子与地理信息的推算模型，利用GIS技术和专家评分法，对甘肃省河西地区啤酒大麦进行精细化农业气候区划，分为适宜、次适宜、不适宜3个区域。适宜区主要位于沿祁连山北麓一线和马鬃山附近地区12个县（区、市）海拔在1500-2200m之间的地区。

The paper aims to use local climatic resources scientifically and rationally, to provide a sclentltlc basis for reasonable layout of malting barley production and sustainable development in Hexi Area of Gansu Province. According to climatic conditions needed for growth of malting barley, combining with the results of previous studies, the author selected year accumulated temperature~〉0~C, panicle initiation stage （late May to early June）, the average temperature of grain filling period （late June to mid-July）, and the number of annual sunshine hours as climate indexes for malting barley climate zoning, and used standard climate statistics and l： 250000 geographic information of 20 meteorological stations in Hexi Area from 1981 to 2010, established a division factor and projection models of geographic information by multiple regression method. Using GIS technology and expert scoring method, refined agro-climatic regionalization of malting barley in Hexi Area, Gansu Province were conducted, and the region was divided into three areas as appropriate, second suitable and unsuitable. The results showed that suitable areas were mainly located along the north Qilian Mountains and near 12 counties （districts, cities） of the Mazong Mountain, and the altitude was froml500 to 2200 m.