Aboveground carbon stock is related to land cover and woody species diversity in tropical ecosystems of Eastern Ethiopia

作     者：Dejene W.Sintayehu Anteneh Belayneh Nigussie Dechassa 

作者机构：College of Agriculture and Environmental SciencesHaramaya UniversityHaramayaEthiopia College of Natural and Computational SciencesHaramaya UniversityHaramayaEthiopia Africa Centre of Excellence for Climate Smart Agriculture and Biodiversity ConservationHaramaya UniversityHaramayaEthiopia 

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

年 卷 期：2020年第9卷第1期

页      面：423-432页

核心收录：

学科分类：07[理学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：This study was funded by Haramaya University 

主　　题：Niche complementarity effect Functional diversity Selection effect Species diversity Species richness 

摘      要：Background:Current theories on biodiversity-carbon sequestration relationship describe biodiversity as an important factor influencing carbon storage,either through complementarity effect or by mass ratio *** far,the expected form of biodiversity-carbon relationships in tropical ecosystems has not been known with ***,we explored the relationship between aboveground carbon stock and different biodiversity measurement indices(i.e.,species richness,species diversity,species evenness,and functional diversity)in different land cover types of Eastern Ethiopia.A total of 48 plots were established using stratified random *** parameters such as diameter at breast height,diameter at stump height,tree height,and species type were ***:We found that the average aboveground carbon stock of the study area is 147.6±17.2 t ha^(−1)(mean,SE)across land cover *** richness,Shannon index,and functional diversity together explained 73.5%,61.4%,58.9%,and 52.0%of the variation in aboveground carbon storage in woodland,riparian forest,bushland,and farmland,*** diversity was a significant predictor explaining the total aboveground carbon stocks(26.7%)across the land cover *** effects of biodiversity on aboveground carbon storage were mediated by functional diversity and presence and dominance of *** shows that both the selection effects and the niche complementarity are important for carbon ***,the impact of functional diversity effects(niche complementarity)was higher than that of functional dominance effects(selection effects).Conclusions:Implementation of protected area-based ecosystem conservation practices in the country seems feasible to mitigate climate change and Reducing Emissions from Deforestation and Forest Degradation(REDD+)programme should emphasize on biodiversity conservation.