基于GIS的阴山旱作区马铃薯种植农业气候区划

Agricultural climate regionalization of dryland farming for potato in Yinshan based on GIS

利用阴山地区以及周边34个气象站近30年(1982—2010年)的气象观测资料,采用相关和回归分析等方法,分区域分析了影响马铃薯产量的关键气象因子,在此基础上,确定以生长季平均温差、降雨量为阴山旱作区马铃薯种植气候区划指标.基于GIS技术,利用小网格推算模型对区划指标进行空间插值,制作了阴山旱作区马铃薯气候区划图.结果表明:高产区主要位于前山的大部分地区和后山南部一带,中产区主要集中在后山中部和前山西北部地区,低产区集中在阴山北部;同时对马铃薯产量空间分布特征进行了分析,并用产量相对变率分析了阴山旱作区马铃薯生产的稳定性,研究结果将为阴山旱作区马铃薯种植规划提供科学依据.

Based on the meteorology dataset of 34 stations over the Yinshan area through the recent 30 years （1982-2010） , we investigated the key environmental variables influencing potato yield using the correlation and regression methods. Two environmental variables, including the mean tem- perature difference, precipitation during the growing season, were selected as the major indexes for determining the suitable area for planting potato. Using the GIS-based small grid calculation model, we interpolated these two major environmental variables and produced the climatic map for potato in Yinshan area. The results showed the high potato yield area located in Qianshan and southern Houshan, and the medium-yield division was mainly concentrated in the central Houshan and north- west Qianshan, the low-yield division was distributed mainly in northern Yinshan. Moreover, this study examined the spatial patterns of potato production, and evaluated the stability of potato yield by combining the relative variability of potato yield. This study could provide valuable references for planting potato in Yinshan area.