秦岭山地针叶树种树木生长对气候变化的响应

Growth response of coniferous trees to climate change in the Qinling Mountains,China

秦岭作为我国重要的地理分界线,其亚高山针叶林生态系统在区域乃至更大尺度范围的水源涵养、生物多样性维护、气候调节等方面具有重要价值。近几十年,秦岭地区大幅升温且存在空间异质性。研究秦岭针叶林带树木生长对气候变化的响应规律对于气候变化下山地森林保护与管理具有重要价值。本文综述了秦岭西部、中部和东部不同海拔针叶树种树木生长与气候的响应关系,从树木径向生长、NDVI、物候和物种分布范围等方面探讨了气候变化对针叶树种的影响,并对树木生长响应气候变化研究中可能存在的问题和研究前景进行了展望。

As an important geographical boundary,the subalpine coniferous forests in the Qinling Mountains have critical effects on water conservation,biodiversity conservation and climate regulation at the regional and even larger scale.In recent decades,temperature significantly increased in the Qinling Mountains,with significant spatial heterogeneity.An understanding of the responses of the Qinling coniferous trees to climate change is important for the protection and management of mountain forests under climate change.In this study,we synthesized the relationships between the radial growth of coniferous trees and climate at different altitudes in the western,central,and eas-tern Qinling Mountains.The effects of climate change on coniferous trees were investigated from the aspects of radial growth,NDVI,phenology,and species distribution range.Furthermore,know-ledge gaps in the responses of tree growth to climate change and possible future directions in this field were discussed.