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通过系统抽样面积为0.06hm~2的458个正方形固定样地以及177株解析木、840株测高样木的调研,经统计分析得出姥山界首等16个林场现有天然次生林总蓄积1351563m~3,年总生长率8.07％,天然次生林有林地单位面积蓄积量87.057m~3/hm~2,比浙江省森林单位面积蓄积量31.050m~3/hm~2高出1.80倍。这表明新安江水库库区周围的水热条件优越,封山育林管护技术科学合理。
Through the systematic sampling of 458 square samples of 0.06 hm ~ 2 and 177 wood-making and 840 height-measuring samples, the statistical analysis shows that the total available natural secondary forests in the first 16 forest farms in Laoshan are 1351563 m ~ 3, and the annual total growth rate was 8.07%. Natural secondary forest had a unit area of 87.057m ~ 3 / hm ~ 2, which was 1.80 times higher than that of Zhejiang Province with a unit area of 31.050m ~ 3 / hm ~ 2. This shows that the water and heat around the reservoir area Xin’anjiang superior conditions, closing hillsides afforestation management and protection technology is scientific and rational.