云南退耕还林工程林木生物质碳汇潜力  

Biomass Carbon Sequestration Potential of Trees under the Grain for Green Programs in Yunnan Province

作　　者：陈先刚[1] 张一平[1] 詹卉[2] 

机构地区：[1]中国科学院西双版纳热带植物园 [2]西南林学院国际合作处,昆明650224

出　　处：《林业科学》2008年第5期24-30,共7页Scientia Silvae Sinicae

基　　金：国家“973”资助项目(2002CB412508);云南省教育厅基金资助项目(06Z076B)

摘　　要：收集云南省2000—2006年各类退耕还林面积和树种数据,设定2007—2010年间的6种年度造林与采伐情景,根据云南省森林资源清查中的人工林生长数据,拟合出各造林树种的经验生长曲线,并利用这些能够反映不同气候和立地条件下人工林的平均生长曲线,结合生物量扩展因子、木材密度和碳含量等参数,估算不同情景下的林木生物质碳贮量及其变化。结果表明:云南省退耕还林工程林木生物质碳贮量在2010、2020、2030、2040和2050年将分别达到8.1～8.8、19.6～25.7、18.4～33.0、20.3～34.9和23.6～35.4TgC。退耕地造林林木生物质碳贮量占云南省退耕还林工程林木生物质碳贮量的33%～41%。In this study we collected data of the acreage and tree species of plantation according to the Grain for Green Programs（GGP） in Yunnan Province from 2000 to 2006, and designed the six different schemes for planting and havesting the annual area of forests in GGP from 2007 to 2010. Furthermore, the empirical growth curves for the different planted tree species were developed based on data from national forestry inventory, and they predicted the average growth rate of plantations under various climates and site anditions. These curves were used for the estimating the carbon stock in the living biomass of the forests, in combination of wood density （WD）, biomass expansion factors （BEF） and carbon fraction （CF）. The prediction shows that the carbon stock in the biomass of forests in GGP in Yunnan will reach to 8.1 - 8.8, 19.6 - 25.7, 18.4 - 33.0, 20.3 - 34.9 and 23.6 - 35.4 TgC by the year 2010, 2020, 2030, 2040 and 2050, respectively, and the carbon stock in the biomass in the previous cropland accounts for 33% - 41% of all GGP-land in Yunnan

关 键 词：云南 退耕还林 碳汇潜力 

分 类 号：S757.4[农业科学—森林经理学]