黄土高原天然柴松林碳储量与碳密度特征  

Carbon storage and density features of natural forest of Pinus tabulaeformis fshekannesis in Loess Plateau

作　　者：杨晓梅[1] 程积民[1] 孟蕾[2] 

机构地区：[1]中国科学院水利部水土保持研究所 [2]西北农林科技大学动物科技学院,陕西杨凌712100

出　　处：《中国水土保持科学》2010年第2期41-45,58,共6页Science of Soil and Water Conservation

基　　金：中国科学院重要方向项目"半干旱黄土区植被自然恢复过程及适度利用研究"(KZCX2-YW-441);国家重点基础研究发展计划973项目"典型脆弱生态系统重建技术与示范"(2007CB106803);国家自然科学基金重点项目"干旱缺水地区土地覆盖变化对区域耗水变化"(40730631)

摘　　要：采用野外调查取样和实验分析相结合的方法,研究黄土高原子午岭林区天然柴松林生态系统空间尺度上碳储量及分布特征。结果表明:1)植被层乔-灌-草不同器官含碳率范围为0.413 7～0.517 4 g/g,枯落层为0.187 2～0.500 3 g/g,不同器官及层次间含碳率差异较大;土壤层有机碳含量随着土层深度的增加而递减。2)柴松林总储碳密度为236.04 t/hm2,空间分布特征表现为土壤层(107.55 t/hm2)>植被层(95.20 t/hm2)>枯落层(33.29 t/hm2);总储碳量为1 597万t,其中土壤碳库最大,为727万t,占总储量的45.52%,分别是植被层及枯落层碳库的1.14和3.22倍。Based on investigation and laboratory analysis, carbon storage and distribution characteristics have been studied on natural secondary forest of Pinus tabulaeformis fshekannesis in Ziwuling area of Loess Plateau. The results showed that： 1 ） the rate range of carbon content was 0. 413 7 - 0. 517 4 g/g and 0. 187 2- 0. 500 3 g/g in vegetation layer （trees, shrubs and grasses） and litter layer respectively. Furthermore, great significance of carbon content had appeared at different organs and layer. Carbon content in soil layer reduced dramatically with the depth. 2） In spatial scale, total carbon density was 236.04 t/hm^2. The discending order of that in different layers was soil layer, vegetation layers, litter layer, and was 107.55 t/hm^2 , 95.20 t/hm^2 and 33.29 t/hm^2 respectively. Furthermore, the total carbon storage capacity was 15.97 Mt. The soil carbon storage was 7.27 Mt, largest in this three carbon compartment. It takes up to 45.52% of whole forest, and 1. 14 and 3.22 times, respectively for vegetation and litter layer carbon storages.

关 键 词：柴松 森林生态系统 有机碳 碳储量 黄土高原 

分 类 号：S157[农业科学—土壤学]