西双版纳地区人工橡胶林生物量、固碳现状及潜力  

Biomass,carbon sequestration and its potential of rubber plantations in Xishuangbanna,Southwest China

作　　者：宋清海[1,2] 张一平[1] 

机构地区：[1]中国科学院热带森林生态学重点实验室(西双版纳热带植物园),云南勐仑666303 [2]中国科学院研究生院,北京100049

出　　处：《生态学杂志》2010年第10期1887-1891,共5页Chinese Journal of Ecology

基　　金：云南省自然科学基金项目(2008CD167);国家重点基础研究发展计划项目(2010CB833501);中国科学院知识创新工程重要方向资助项目(KZCX2-YW-Q1-05-04)

摘　　要：选取西双版纳地区橡胶树适宜和次适宜种植区6个年龄段(5、9、14、19、23、26年生)的橡胶林,对其生长参数进行了实测,利用生物量回归方程得到了橡胶林的生物量和固碳量,并探讨了橡胶林的固碳潜力。结果表明:西双版纳适宜种植区橡胶林地上净初级生产力(ANPP)在19年生时达到最大,为(16.22±3.47)t.hm-2.a-1;次适宜种植区橡胶林ANPP在23年生时达到最大,为(8.65±3.46)t.hm-2.a-1。适宜和次适宜种植区橡胶林地上总生物量(WA)最大值分别为205.82和139.76t.hm-2。对应的生物量内禀增长率分别为21%和14%。适宜和次适宜种植区橡胶林碳储量最大值分别达123.49和83.86tC.hm-2,均明显低于西双版纳热带季节雨林生态系统的总固碳量(311.41±66.46)tC.hm-2,适宜种植区橡胶林固碳量略高于世界热带森林的平均水平(121tC.hm-2)。截至2008年,西双版纳橡胶林总固碳量约为16.54×106tC。In order to quantify the potential carbon （C） sink of the rubber plantations in Xishuangbanna and to understand the implication of the C sink to the regional C budget and future forest management,six age classes （5,9,14,19,23,and 26 years old） rubber plantations in suitable （low elevation,550-600 m） and less suitable （high elevation,950-1050 m） planting regions of Xishuangbanna were selected to estimate their biomass C stocks. In suitable planting region,19-year-old plantation had the highest aboveground net primary productivity （16.22±3.47 t.hm^-2·a^-1while in less suitable planting region,23-year-old plantation had the highest one （8.65±3.46 t.hm^-2·a^-1 The maximum total aboveground biomass of the plantations in suitable and less suitable planting regions was 205.82 and 139.76 t·hm^-2and the corresponding intrinsic rate of natural increase of biomass was 21% and 14%,respectively. The maximum total biomass carbon stock of the plantations in suitable and less suitable planting regions was 123.49 and 83.86 tC·hm^-2respectively,being obviously lower than that （311.41±66.46 tC·hm^-2 of the local tropical seasonal rain forests. The total biomass carbon stock of the plantations in suitable planting region was slightly higher than the average value （121 tC·hm^-2 of the tropical forests in the world. By 2008,the total biomass carbon stock of the rubber plantations in Xishuangbanna was 16.54×10^6 t C.

关 键 词：橡胶林 生物量 固碳量 西双版纳 

分 类 号：S718.5[农业科学—林学]