陆地森林植被植物细根对全球气候变化的响应研究进展

Review on response of plant fine roots to global climate change in terrestrial forest vegetation

全球气候变化对陆地森林生态系统与生物多样性造成了较为明显的负面和潜在影响,由此引发了各种生态环境问题。细根作为植物最活跃的组成部分之一,在调节陆地森林生态系统碳平衡和养分循环的过程中发挥着重要作用。植物细根对全球气候变化的响应研究已成为当前全球变化背景下陆地生态系统关注的热门课题之一。全球气候变化是以温室气体(CO2、N2O)浓度持续上升、氮沉降加剧、全球气候变暖为主要特征。为此该文从以下几个方面对该领域的研究进展进行综述:(1)CO2浓度升高对植物细根的影响;(2)氮沉降增加对植物细根的影响;(3)温度升高和降水变化对植物细根的影响。最后,进一步探讨了该领域研究仍存在的科学问题,提出了未来研究展望。研究结果不仅为进一步研究全球气候变化对植物细根的影响提供重要的理论依据和参考,也丰富了全球变化背景下根系生态学相关科学理论。

Global climate change has caused more obvious negative and potential impacts on terrestrial forest ecosystems and biodiversity,which has led to various ecological and environmental problems.As one of the most active components of plants,fine roots play an important role in regulating carbon balance and nutrient cycling in terrestrial forest ecosystems.The response of plant fine roots to global climate change has become one of the hot topics of terrestrial ecosystems under the background of global climate change.Global climate change is characterized by continuous rise of greenhouse gas(CO2,N2O)concentrations,increased nitrogen deposition and global warming.Therefore,this article summarized the research progress in this field from the following aspects:(1)the effect of elevated CO2 concentration on plant fine roots;(2)the effect of increased nitrogen deposition on plant fine roots;(3)the effect of the increase of temperature or precipitation changes on plant fine roots.Finally,the existing scientific problems in this field were further discussed and the future research prospects were proposed.The research results not only provided important theoretical references for further studies on the impact of global climate change on plant fine roots,but also enriched the scientific theory of root ecology in the context of global change.