青海高寒地区主要造林树种林木生产力研究

通过对青海省大通县近2000hm2典型人工林植物群落标准地调查和解析木分析,了解不同人工林分林木生产力状况,结果表明,在林木生长关系中,白桦的树高与蓄积量的关系呈多项式分布;青杨的树高与蓄积量呈现指数函数分布;青海云杉与落叶松的树高与蓄积量的关系呈现幂函数分布。在目前的技术经济水平条件下,当地的青杨×沙棘混交林、白桦纯林、云杉纯林的生产力指标可作为该地区常规造林技术条件下乔木成林的现实生物量生产潜力标准,表明上述类型的造林模式是今后林业发展方向。从生物多样性出发,今后的造林建设提倡多营造混交林。

Study on Productivity of Forestation Species in High and Cold Region Qinghai

Plant community samples and analyze woods were investigated and analyzed in 2000 hectare plantation.The production situations were learned in different plantation woods.The results showed among the relationship of forest species growth,growth relationship of Asian White Birch is multinomial distribution between trees heights and its volumes.Cathay Poplar is exponential function distribution between trees heights and volumes.Qinghai Spruce and Prince Rupprecht are power function distribution between trees heights and volumes.Under the conditions of technique economy level,the productivity of Cathay Poplar Sarch mixed forest,Asian white Birch pure stand,Spruce pure stand can be standards of trees in the place stands.Forestation might be as above.But mixed forest is the more the better according to biological diversity.