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根据凉山州春苦荞分期播种试验资料和各县历年春苦荞产量资料,将凉山州春苦荞全生育期划分成4个阶段,采用各阶段各个气候因子与荞麦气象产量的相关系数和回归系数的组合构建各气候因子的权重系数,以昭觉作为参照点,统计分析了气候多因子权重相似系数和相似距离的空间分布特征,并以气候多因子权重相似距离为区划指标,结合GIS分析技术进行基于气候多因子权重相似性的凉山州春苦荞麦气候适应性区划.通过调研并与当地荞麦优势产业规划比较,基于气候多因子权重相似性方法具有很好的实用性,区划结果更符合实际,区划指标既满足气候相似性原则,又更具生物学意义,区划结果为凉山州春苦荞布局提供了科学依据.
According to the experimental data of staged sowing of spring tartary buckwheat in Liangshan Prefecture and the yield data of tartary buckwheat in each county in the past years, the whole growth period of spring tartary buckwheat in Liangshan was divided into four stages. The correlation coefficient and regression of each climatic factor and meteorological yield of buckwheat Coefficient combination to build the weight coefficient of each climate factor. Using Zhaojue as a reference point, the spatial distribution characteristics of similarity factors and similar distances of climate multi-factor weights were statistically analyzed. Based on GIS analysis Technology to carry out climate adaptability zoning of spring buckwheat in Liangshan prefecture based on the similarity of climate multiple factors weight.Compared with the local buckwheat superior industry planning, the method based on climate multi-factor weight similarity has good practicability and the zoning results are more in line with In fact, the zoning indicators not only meet the climate similarity principle, but also have more biological significance. The zoning results provide a scientific basis for the distribution of spring buckwheat in Liangshan Prefecture.