Vegetation and ecosystem carbon recovery following shifting cultivation in MizoramManipur-Kachin rainforest eco-region,Southern Asia

作     者：Anudip Gogoi Uttam Kumar Sahoo Hemanta Saikia 

作者机构：Department of ForestryMizoram UniversityAizawl 796004India College of SericultureAssam Agricultural UniversityJorhat 785013India 

出 版 物：《Ecological Processes》 (生态过程（英文）)

年 卷 期：2020年第9卷第1期

页      面：236-248页

核心收录：

学科分类：0907[农学-林学] 07[理学] 08[工学] 0829[工学-林业工程] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：This study was financially supported by DST Government of India(Sanction No.DST/IS_STAC/CO2-SR-227/14(G)-AICP-AFOLU-IV) 

主　　题：Biodiversity conservation Regrowth forest Vegetation succession Carbon storage Restoration of degraded land 

摘      要：Background:Shifting cultivation(locally known as“jhum)is a major driver of deforestation and loss of ecosystem services in *** developing any effective conservation of biodiversity and carbon service program,an indepth understanding to the recovery of vegetation and carbon after abandonment of jhum is *** estimated species richness,abundance and composition of trees,shrubs and herbs,carbon distribution in aboveground and belowground components along a chronosequence of jhum fallow in northeast India,and elucidated the factors affecting the recovery processes of jhum ***:Species composition and other plant community attributes,carbon storage in different pools were studied in 5 jhum fallows(5,5-10,11-15,16-20,21-25 years old)and an old-growth *** data were subjected to linear mixed effect modeling using R-package“nlmefor identifying the important factors contributing to the recovery of vegetation and ***:Species composition varied significantly(P0.05)between jhum fallows and old-growth *** density varied from 28 stems ha−1 in 5 years old jhum fallow to 163 stems ha−1 in old-growth *** biomass carbon in all components and soil organic carbon were significantly(P=0.01)lower in jhum fallows than in the old-growth forest except living non-woody biomass *** recovery of aboveground biomass carbon was faster during early successive years than the mid-successive jhum *** ecosystem carbon and soil organic carbon stock in the oldest jhum fallow was 33%and 62%of those in the old-growth forest,*** fallow age was found to be the most important explanatory factor in the recovery process of vegetation and carbon stock in re-growing ***:The shifting cultivation fallows gradually recovered both vegetation and carbon and are potential repository sites for biodiversity conservation,which may take much longer time to reach up to old-growth forest in northeast India.