2010-2014年哀牢山亚热带常绿阔叶林土壤呼吸数据集

A dataset of soil respiration in a subtropical evergreen broad-leaved forest at Ailao Mountain from 2010 to 2014

亚热带森林是我国分布面积最大的森林类型,在调控全球气候变化和维持大气碳平衡中具有重要作用。土壤通过呼吸作用排放的碳是大气CO_(2)的主要来源,土壤碳库的细微变化也会显著影响大气CO_(2)的浓度,因此目前亚热带森林土壤碳储量的大小及动态变化特征受到广泛关注。云南哀牢山是我国重要的亚热带森林分布区。本研究依托云南哀牢山森林生态系统国家野外科学观测研究站,利用全自动多通道观测系统开展了亚热带常绿阔叶林土壤呼吸的连续测定,经过严格的数据质量控制和评估,将2010-2014年的土壤呼吸的监测数据收集与整理,包括土壤5 cm温度(Ts)、土壤10 cm含水量(SWC)和土壤呼吸(Rs),并形成日、月和年尺度三类数据集。本数据集对于揭示气候变化对亚热带常绿阔叶林土壤生态过程的影响、正确评估土壤有机碳排放和森林生态系统管理具有重要意义,也为进一步研究气候变暖等全球变化对土壤呼吸组分尤其是土壤有机碳排放的影响提供经验和理论基础。

Subtropical forests,as the largest forest type in China,play an important role in regulating global climate change and maintaining atmospheric carbon balance.The carbon emitted by soil through respiration is the main contributor of atmospheric CO_(2) levels,so even slight changes in soil carbon pool can significantly affect the concentration of atmospheric CO_(2).Therefore,at present,the magnitude and dynamic change characteristics of soil carbon storage in subtropical forests are attached great importance to.Ailao Mountain in Yunan Province stands as a crucial region for the distribution of subtropical forests in China.This study used a multichannel automated chamber system to estimate soil respiration in asubtropical evergreen broad-leaved forest ecosystem of Ailao Mountain.Ailao Mountain Station for Subtropical Forest Ecosystem Studies is a national field station and a basic observation station of the Chinese Ecosystem Research Network.We gathered soil respiration data from the subtropical evergreen broad-leaved forest in Ailao Mountain from 2011 to 2014,including soil temperature 5 cm(TS),soil moisture content 10 cm(SWC)and soil respiration data(RS),organized at daily,monthly and annual scales.This dataset is of great significance in revealing the effects of climate change on soil ecological processes in subtropical evergreen broad-leaved forests.It can facilitate precise evaluation of soil organic carbon emissions and forest ecosystem management,and provide both empirical and theoretical basis for further research on the effects of global changes(e.g.climate warming)on soil respiration components,especially with a focus on soil organic carbon emissions.