文献类型：期刊文献

中文题名：川西云杉人工林径向生长对气候变化的响应

英文题名：Growth response of an artificial plantation of Picea likiangensis var.rubescens to climate change

作者：管增艳[1] 金亚宁[1] 许倩[1] 贾龙玉[1] 石松林[1,2] 曹吉鑫[3] 石春明[4] 彭培好[1,2]

第一作者：管增艳

机构：[1]成都理工大学旅游与城乡规划学院,四川省社会科学重点研究基地(扩展)国家公园研究中心,成都610059;[2]成都理工大学生态资源与景观研究所,成都610059;[3]中国林业科学研究院森林生态环境与保护研究所,国家林业和草原局森林生态环境重点实验室,北京100091;[4]北京师范大学全球变化与地球系统科学研究院,北京100875

年份：2021

卷号：27

期号：3

起止页码：560-567

中文期刊名：应用与环境生物学报

外文期刊名：Chinese Journal of Applied and Environmental Biology

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家重点研发计划项目(2017YFC0505001)资助。

语种：中文

中文关键词：气候变暖;径向生长;树木年轮;人工林;川西高原

外文关键词：climate warming;radial growth;tree-ring;artificial plantation;western Sichuan Plateau

分类号：S791.18

摘要：大量研究已经发现全球气候变暖将促进川西高原高海拔区域天然林径向生长,然而,目前气候变化对区域人工林生长的影响程度尚不清楚.以道孚县川西云杉(Picea likiangensis var.rubescens)人工林为研究对象,以天然林为对照,采用树木年轮学方法构建树木年轮宽度指数年表,利用相关分析和滑动相关分析方法探讨近40年来人工林和天然林径向生长动态特征及其对气候变暖的响应规律.结果显示,1982-2018年期间,研究区呈现明显的气候变暖特征,年平均气温、最高气温和最低气温均呈现显著上升的趋势,增温速率分别为0.23、0.49和0.22℃/10年,而年降水量无显著变化趋势;川西云杉人工林径向生长对气候变化响应较为敏感,川西人工林径向生长与当年生长季(7-9月)和休眠期(前一年11月至当年4月)的温度呈显著正相关,与当年生长季(7-9月)的相对湿度呈显著负相关,而天然林仅与生长季(6-9月)的温度呈显著正相关,与生长季末期(9月)的相对湿度呈显著负相关;在1982-2018年期间,随着气温升高,人工林径向生长对温度响应的敏感性呈下降趋势,而天然林径向生长对7-9月温度响应的敏感性仍然较为稳定.因此,在未来气候变暖背景下,温度升高将继续增加天然林的生长,而对人工林生长的促进作用会随着对温度响应敏感性下降而逐渐减弱.
Tree radial growth increases at high elevations under climate warming conditions.However,it is unclear how climate change influences the dynamics of artificial plantation growth in this region.In this study,we used dendroclimatological techniques to develop tree ring width index chronologies of artificial and natural forests of Picea likiangensis var.rubescens(PL)from the western Sichuan province.Pearson’s correlation analysis and moving correlation analysis were used to detect the temporal change trend of radial growth between artificial and natural forests of PL and their responses to recent climatic warming.Our results showed that air temperature rapidly increased from 1982 to 2018 in this region.The annual mean,maximum,and minimum temperatures increased significantly by 0.23°C,0.49°C,and 0.22°C/decade,respectively,whereas precipitation showed a non-significant increasing trend.The radial growth of artificial plantations has shown high sensitivity to climate change.The radial growth of artificial plantations exhibited significant positive correlations with temperature in both the growing season(from July to September)and dormancy period(from November to April),and significant negative associations with relative humidity from July to September of the current year.In contrast,radial growth of natural forest showed only significant positive correlations with temperature of the growing season(from June to September),and significant negative associations with relative humidity in September.As the temperature increased from 1982 to 2018,the sensitivity of artificial plantation growth in response to temperature showed a decreasing trend,whereas the relationship between natural forest growth and temperature from July to September remained stable.Consequently,our results indicated that climate warming could benefit natural forests,but gradually reduce the influence of increasing temperature on the radial growth of artificial plantations because of the declining sensitivity of growth-temperature relationships over time.