基于GIS的三峡库区精细化甜橙气候生态区划

GIS-Based Fine Climate Ecological Zoning of Sweet Orange in the Three Gorges Reservoir Area

分析了影响三峡库区甜橙生长发育的主要气候资源和气象灾害,并根据不同甜橙品种类型及鲜食甜橙与加工甜橙对气候生态条件要求的差异,确定了影响三峡库区甜橙分布的主要气候生态因子及指标;采用回归模拟或插值等方法,利用Arcgis和1∶25万DEM(区、县用1∶5万)研究了年总辐射、年平均气温和年平均相对湿度等区划因子的空间分布,以此为基础,制作了三峡库区甜橙精细化气候生态区划;根据区划结果进行了分区评述,并提出了三峡库区甜橙发展战略.

The major climate resources and meteorological disasters which impact the growth of citrus in the Three Gorges Reservoir Area were analyzed and, based on the differences in the climatic and ecological conditions required by various sweet orange types for fresh consumption and processing, the main climatic and ecological factors influencing the distribution of sweet orange cultivation were established. The spatial distribution of radiation, annual average temperature and average relative humidity were studied with the methods of regression, tricts and counties with orange was made for th a development strategy simulation and interpolation with the help of ARCGIS and 1：250 000 DEM （Dis-tricts and counties with 1： 50 000）. Based on the results obtained, fine climate ecological zoning of sweet e Three Gorges Reservoir Area. The different zones were evaluated separately and was proposed for sweet orange production in the Three Gorges Reservoir Area.