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一、调查地区概况滇西北林区总面积7831.8万亩,占全省总面积的13.6％,森林蓄积量31516.4万立方米,占全省森林总蓄积量的31.9％,其中:有林地面积2665.8万亩,占全省森林面积的18.6％。本区为我省森林资源最丰富地区。森林复盖率为34％(包括灌木林为42％),森林分布比较集中,以经济价值高,材质优良的云、冷杉为主,其次为云南松、高山松、云南铁杉、
First, the survey area profile The total area of forest in Northwest China 78.318 million mu, accounting for 13.6% of the total area of the province, the volume of forest volume 31516.4 million cubic meters, accounting for 31.9% of the province’s total forest volume, of which: 26,658,000 forest area Mu, accounting for 18.6% of the province’s forest area. This area is the most abundant forest resources in our province. The forest coverage rate is 34% (including shrub forest is 42%), the forest distribution is relatively concentrated, with high economic value, excellent quality of the cloud, fir, followed by Yunnan pine, alpine pine, Yunnan hemlock,