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为了探讨西南桦在云南的气候适宜种植区域,利用云南130个气象台站1961~2010年气候资料,采用GIS技术插值分析得出1 km×l km气候要素网格图,依据8个气候指标划分出西南桦种植的最适宜、次适宜和不适宜区,给出了区划专题图。结果表明,西南桦适宜区主要位于泸水县、永平县、景东县、新平县、建水县、砚山县、丘北县、罗平县共同构筑成的分布北线以南地区;滇南、滇西南和滇东南海拔1 100~1 600 m的山区,是西南桦重点造林区域。
In order to explore the climate-suitable planting area of Betula alnoides in Yunnan, climatic data of 130 meteorological stations in Yunnan from 1961 to 2010 were used to interpolate climatic elements of 1 km × 1 km by GIS technology, and were divided into 8 climatic indices Southwest birch planting the most suitable, sub-suitable and unsuitable area, given the zoning map. The results showed that the suitable area of Betula alnoides was located mainly in the area south of the northern line of north Lushui County, Yongping County, Jingdong County, Xinping County, Jianshui County, Yanshan County, Qiu Bei County and Luoping County. South, Southwest Yunnan and Southeast Yunnan at an altitude of 1 100 ~ 1 600 m of the mountain, is the key afforestation area of Betula alnoides.