青藏高原川西云杉林生物量对气候变化的响应  

Responses of Chuanxi spruce forest biomass to climate change on the Tibetan Plateau

作　　者：姜思慧 梁宇[1] 常瑞英[3] 黄超[1] 马天啸 刘波[1] 吴苗苗 张鹏翼 JIANG Si-hui;LIANG Yu;CHANG Rui-ying;HUANG Chao;MA Tian-xiao;LIU Bo;WU Miao-miao;ZHANG Peng-yi(CAS Key Laboratory of Forest Ecology and Management,Institute of Applied Ecology,Shenyang 110016,China;University of Chinese Academy of Sci-ences,Beijing 100049,China;Institute of Mountain Hazards and Environment,Chinese Acade-my of Sciences,Chengdu 610041,China;School of Geographical Sciences,Northeast Normal University,Changchun 130024,China)

机构地区：[1]中国科学院森林生态与管理重点实验室(中国科学院沈阳应用生态研究所),沈阳110016 [2]中国科学院大学,北京100049 [3]中国科学院水利部成都山地灾害与环境研究所,成都610041 [4]东北师范大学地理科学学院,长春130024

出　　处：《生态学杂志》2020年第12期3903-3912,共10页Chinese Journal of Ecology

基　　金：国家重点研发计划项目(2017YFA0604402);国家自然科学基金项目(31971486)资助。

摘　　要：近几十年来,剧烈的气候变化已严重影响到青藏高原森林生态系统的结构和功能,青藏高原逐渐成为研究森林对气候变化响应的热点地区。本研究以分布于青藏高原地区的川西云杉(Picea likiangensis var.rubescens)为例,应用森林生态系统过程模型,设置4种气候变化预案,模拟不同气候变化情景下不同海拔和不同林分年龄阶段的川西云杉林生物量动态变化,通过比较不同气候变化情景下生物量的变化率来量化川西云杉林生物量对气候变化响应的强烈程度。结果表明:气候变暖会促进川西云杉林生物量增加,且生物量增幅与气候变暖的程度呈正相关(P<0.05);随着海拔升高,川西云杉林生物量对气候变化的响应程度增强;从短期和中期来看,川西云杉幼龄林生物量表现出对气候变化的响应强烈,但从长期来看,川西云杉中龄林生物量对气候变化的响应强烈。Drastic climate change over past decades has seriously affected the structure and function of forest ecosystems,making Tibetan Plateau one of the hotspots for exploring the response of forest to climate change.In this study,we used a forest ecosystem process model and set up four simulation scenarios to simulate the dynamics of Chuanxi spruce(Picea likiangensis var.rubescens)forest biomass at different elevations and different stand ages under various climate change scenarios.The variation rates of biomass among different climate change scenarios were used to quantify the response intensity of Chuanxi spruce forest biomass to climate change.The results showed that future climate warming would increase Chuanxi spruce forest biomass and that the increment in biomass was positively correlated with the magnitude of climate warming(P<0.05).With the increases of elevation,the response of biomass to climate change showed an increasing trend.In the short-and mid-term,the biomass of young forests showed the stronger response to climate change;but in the long-term,the biomass of middle-aged forests showed the stronger response to climate change.

关 键 词：川西云杉 生态系统过程模型 生物量模拟 林分年龄 

分 类 号：S791.18[农业科学—林木遗传育种]