贵阳市区灌木林生态系统生物量及碳储量  

Biomass and carbon storage of shrub forests ecosystem in karst city

作　　者：宁晨[1,2,3] 闫文德[1,2,3] 宁晓波[1,2] 梁小翠[1,2,3] 王新凯[1,2] 

机构地区：[1]中南林业科技大学,长沙410004 [2]南方林业生态应用技术国家工程实验室,长沙410004 [3]湖南会同杉木林生态系统国家野外科学观测研究站,会同418307

出　　处：《生态学报》2015年第8期2555-2563,共9页Acta Ecologica Sinica

基　　金：林业公益性行业科研重大专项(201104009);湖南省教育厅高校创新平台建设项目(湘财教字[2010]70号);长沙市科技局项目(K1003009-61)

摘　　要：采用直接收获法和实测数据,以贵州省贵阳市区天然灌木林内木本和草本植物、凋落物及土壤为研究对象,研究了灌木林生态系统的生物量、碳含量及碳储量。结果表明:灌木林植被层生物量为23.16 t/hm2,其中木本植物层生物量为12.46 t/hm2;草本植物层为3.74 t/hm2;凋落物层为6.96 t/hm2,分别占植被层生物量的53.08%、16.15%、30.05%。木本植物25种的碳含量范围为445.91—603.46 g/kg;草本植物6种的碳含量为408.48—523.04 g/kg;凋落物层碳含量为341.01—392.81 g/kg;土壤层碳含量为5.73—26.68 g/kg。生态系统总碳储量为88.34 t/hm2,其中植被层为8.10 t/hm2;凋落物层为2.56 t/hm2;土壤层为77.68 t/hm2,分别占系统总碳储量的9.17%、2.89%、87.94%。灌木林生态系统碳储量的空间分布格局为:土壤层>植被层>凋落物层。研究结果,可为喀斯特城市估算森林生态系统碳储量和碳平衡提供科学依据。Biomass, carbon concentration and carbon storage were investigated in the woody plants, herbaceous plants, litter and soil layers in a natural shrub ecosystem in Guiyang city, Guizhou Province. The results showed that biomass of the shrub vegetation was 23.16 t/hm2, of which 12.46 t/hm2 was in the woody plants （ 53.08% of the total biomass in the shrub vegetation）, 3.74 t/hmz in the herbaceous plants （16.15% of the total biomass） and 6.96 t/hm2 in the litter （30.05% of the total biomass）. Carbon concentration ranged from 445.91 to 603.46 g/kg in 25 woody plant species, 408.48--523.04 g/ kg in 6 herbaceous plant species, 341.01--392.81 g/kg in litter and 5.73--26.68 g/kg in the soils. The total carbon storage was 88.34 t/hm2 in this natural shrub ecosystem, of which 9.17% was found in the vegetation （8.10 t/hm2） , 2. 89% in litter （2.56 t/hm2） and 87.94% in the soil components （77.68 t/hm2）. The carbon storage in the shrub ecosystem decreased in an order soil component 〉 vegetation component 〉 litter component. Our results provide scientific basis and reference for estimating carbon storage and balance in urban forest ecosystems in the Karst areas.

关 键 词：喀斯特地区 灌木林生态系统 生物量 碳含量 碳储量 贵阳市 

分 类 号：S718.5[农业科学—林学]