中国长白山北坡与西坡林线景观动态对气候变化响应的对比分析  

Comparative Analysis of Response of Treeline Landscape Dynamics to Climate Change on Northern Slope and Western Slope of Changbai Mountain in China

作　　者：王晓东[1] 褚丽娟[1] 安雨[2] 刘晓辉[2] 李晓强[1] WANG Xiao-dong;CHU Li-juan;AN Yu;LIU Xiao-hui;LI Xiao-qiang(College of Geographical Sciences,Changchun Normal University,Changchun 130032,China;Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China)

机构地区：[1]长春师范大学地理科学学院,吉林长春130032 [2]中国科学院东北地理与农业生态研究所,吉林长春130102

出　　处：《江西农业学报》2023年第12期139-145,共7页Acta Agriculturae Jiangxi

基　　金：国家自然科学基金联合基金重点支持项目(U2243230);国家自然科学基金项目(42230516);吉林省科技发展计划资助项目(YDZJ202301ZYTS524);吉林省教育厅科学技术研究项目(JJKH20220830KJ);长春师范大学自然科学基金资助项目(CSJJ2022008ZK)。

摘　　要：为研究高山林线景观动态对气候变化响应方式的坡向差异性,以长白山北坡和西坡林线为研究区,基于1994—2021年台站气象记录和相同时期逐年的TM影像数据,采用线性和拟合显著的函数结合冗余分析(RDA)来认识北坡和西坡林线气候变化对景观动态响应差异。结果表明:北坡与西坡气温和降水均有增加趋势(k>0),北坡林线收缩(k<0),西坡扩张(k>0),景观形状趋于规则(k<0)。北坡RDA分析结果只有气温和热量指标箭头较长,景观动态对气候变化响应积极,而西坡所有指标箭头差异不大,林线上移对所有气候指标均有响应,不同坡向林线景观动态对气候变化的响应方式不同。In order to study slope difference of the responses landscape dynamics to climate change,the treeline was selected as the study area related to northern slope and west slope of Changbai Mountain.Based on meteorological records of stations from 1994 to 2021 and annual TM image data of the same period,the response differences of landscape dynamics on northern slope and west slope to climate change were understood by linear and fitting significant functions combined with redundancy analysis(RDA).The results show that the slope value(k)is greater than 0 on linear functions for all temperature and precipitation indicators and years on northern and western slope,indicating that there are increasing trends on temperature and precipitation on all slopes.The slope value is less than 0 on linear functions for landscape area index of Betula ermanii woodland and years on northern slope and that on western slope is greater than 0,indicating that the treeline shrinkage on northern slope and expansion on west slope.The slope value is less than 0 on linear functions for landscape shape index and years of all slopes,indicating that landscape shapes tend to be regular while landscape dynamics.The arrows are longer for temperature and heat indicators of the RDA analysis on the northern slope,and the landscape dynamics respond positively to temperature changes.However,the arrows for all indicators on the western slope show little difference,and the upward movement of the treeline responds to all climate indicators.The landscape dynamics on different slopes respond differently to climate change.

关 键 词：长白山林线 坡向差异 景观动态 冗余分析 

分 类 号：X53[环境科学与工程—环境工程]