气候变化对中国大兴安岭森林演替动态的影响  

Effects of global climate change on forest succession in Daxing’anling of Northeast China

作　　者：程肖侠[1] 延晓冬[1] 

机构地区：[1]中国科学院大气物理研究所东亚区域气候-环境重点实验室

出　　处：《生态学杂志》2007年第8期1277-1284,共8页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(40675408);国家重点基础研究发展规划资助项目(2006CB400500)

摘　　要：应用森林生长演替动态模型-FAREAST,在气候变化背景下对大兴安岭漠河林区森林的演替动态进行了模拟。模拟选择了目前气候情景、增暖情景、温度和降水都增加情景3种气候情景,并考虑了气候变化引起的火干扰变化对森林演替的影响。结果表明:维持目前气候不变,兴安落叶松(Larix gmelini)将继续作为绝对优势树种,樟子松(Pinussylvestris var.mongolica)、桦树(Betula)、杨树(Populus)伴生其中;气候发生变化,东北森林带将有北移的趋势,大兴安岭将可能以温带针阔混交林为主,森林群落中出现红松(P.koraiensis)、蒙古栎(Quercus mongolica)、椴树(Tilia)等树种;火干扰影响森林生物量及森林的物种组成和结构。By using forest gap model FAREAST, the forest succession and the potential responses of some typical species to climate change in Daxing＇ anling were simulated. Three climate change scenarios developed from GCM results, i. e. , current climate, warmer climate, and more precipitation and higher temperature, were selected, with the effects of climate-induced variations of fire frequency on forest succession taken into account. The results showed that if the current climate goes with no change, Larix gmelini will still be the dominant species companied with Pinus sylvestris vat. mongolica, Betula and Populus. If the climate changes, the forest belt in Northeast China will tend to move northward, and temperate broadleaved-coniferous mixed forest will have the chance to be dominant, i. e. , Pinus koraiensis, Quercus mongolica and Tilia will appear as new species. Fire disturbance has effects on forest biomass and its species composition and structure.

关 键 词：FAREAST 大兴安岭 气候变化 火干扰 森林演替 

分 类 号：S718.5[农业科学—林学]