Aboveground carbon sequestration rate in alpine forests on the eastern Tibetan Plateau:impacts of future forest management options
Alpine forests in the eastern Tibetan Plateau are important ecological barriers in the upper reaches of the Yangtze River.However,due to continuous high-intensity harvesting,a large number of plantings,and the complete harvesting ban measures in recent decades,the forest tree species and age cohorts have become relatively homogenous,and the biodiversity and ecological functions have been reduced.To design effective forest management options to optimize forest structure and increase carbon sequestration capacity,Mao County in Sichuan Province was selected as the study site and six forest management options(harvesting,planting)of different intensities were tested using the LANDIS-Ⅱ model to simulate and compare the differences in forest aboveground carbon sequestration rate(ACSR)between these options and the current management option over the next 100 years.Our results showed that(ⅰ)the different harvesting and planting intensities significantly changed the ACSR compared with the current management options;(ⅱ)different communities responded differently to the management options,with the ACSR differing significantly in cold temperate conifers and temperate conifers but not in broad-leaved trees(P＜0.05);and(ⅲ)a comprehensive consideration of forest management options at the species,community and landscape levels was necessary.Our results suggest that implementing a longer harvesting and planting interval(20 years)at the study site can maximize forest ACSR.This study provides an important reference for evaluating the ability of forest management options to restore forest ecological functions and increase carbon sequestration capacity and for selecting effective forest management programs in the eastern Tibetan Plateau.
Yang Lin、Jiang-Tao Xiao、Yong-Ping Kou、Jia-Xing Zu、Xin-Ran Yu、Yuan-Yuan Li
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Ministry of Education Key Laboratory of Land Resources Evaluation and Monitoring in Southwest China,Sichuan Normal University,Chengdu 610066,China
School of Geography and Resource Science,Sichuan Normal University,Chengdu 610101,China
CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China
Ministry of Education Key Laboratory of Environment Change and Resources Use in Beibu Gulf,Nanning Normal University,Nanning 530001,China
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地上固碳速率 物种与群落 森林管理 生态过程 森林景观模型 高山森林 青藏高原
国家自然科学基金国家自然科学基金四川省自然科学基金Strategic Priority Research Program(category A)of Chinese Academy of Sciences中国科学院青年创新促进会项目
万方数据
维普
