【摘要】 以青海省森林资源二类调查为基础,结合样地调查资料、解析木资料等,综合应用模型模拟、尺度扩展和GIS等方法,分析青海省乔木林碳储量现状。结果表明,(1)2009年青海省乔木林植被碳储量约为28.55×10~6Mg,平均碳密度约为44.24Mg/hm~2;(2)青海省乔木林碳主要分布在天然林中,占青海乔木林碳库总量的89.83%,碳密度同样以天然林为高(46.19Mg/hm~2);(3)有林地中纯林碳储量最高,占乔木林碳库总量的84.28%;碳密度则以混交林为最高,达60.20Mg/hm~2;(4)青海省四大乔木树种(组)(云杉、圆柏、桦木和杨树)的碳储量占全省乔木林植被碳储量的98.07%,碳密度方面居前5的树种(组)为云杉(74.03Mg/hm~2)、桦木(55.76Mg/hm~2)、油松39.24(Mg/hm~2)、栎类(37.49Mg/hm~2)、圆柏(29.61Mg/hm~2);(5)青海省乔木林主要以中幼林为主,占总面积的63.19%,正处于快速生长阶段。更多还原

【Abstract】 Based on data from forest inventory,sample survey and stem analysis,carbon storage of arbor forest including tree layer,shrub layer and herb layer were analyzed with methods such as biomass model,up-scaling and GIS. The results were as the fellows:( 1) In 2009,carbon storage and carbon density in forest vegetation of Qinghai were 28. 55×10~6Mg and 44. 24 Mg/hm~2respectively;( 2) The forest vegetation carbon mainly distributed in natural forest,total vegetation carbon storage of which accounted for 89. 83% of total vegetation carbon pool in tree forest of Qinghai Province. Carbon density of natural forest is much higher than that of plantation;( 3) In all land use types,carbon storage of pure forest is the highest( 84. 28%),while carbon density of mixed forest is the highest( 60. 20Mg/hm~2);( 4) Carbon storage of tree species such as Picea asperata,Sabina chinensis,Betula and Populus are accounted 98. 07% of total vegetation carbon storage in tree forest of Qinghai Province. The top five carbon density species are Picea asperata( 74. 03 Mg/hm~2),Betula( 55. 76 Mg/hm~2),Pinus tabuliformis( 39. 24Mg/hm~2),Quercus( 37. 49Mg/hm~2) and Sabina chinensis( 29. 61 Mg/hm~2);( 5) The arbor forests in Qinghai province are mainly composed of young forest with high growth rate,which accounted for 63. 19% of total arbor forests in Qinghai. The arbor forests in Qinghai are in the rapid growth stage.更多还原