大气和海洋科学快报（英文版）2021，Vol.14Issue(1)：33-39,7.
淮河流域南部丘陵森林地区土壤-植被-大气相互作用:长期野外试验观测的初步分析
Soil-vegetation-atmosphere interaction over a hilly forest in the southern Huaihe River Basin: Long-term field experiment and preliminary analysis of basic observations
摘要
Abstract
To improve the understanding of the CO2 exchange and the cycling of energy and water between the land surface and atmosphere over a typical hilly forest in southeastern China,a long-term field experimental observatory was established in Huainan,Anhui Province.Here,the authors briefly describe the three parts of ongoing research activities: the environmental monitoring at the site,the meteorological observations on a high tower,and particularly the intensive measurement of soil-vegetation-atmosphere interaction on a lower tower.Specifically,the diurnal variation of basic meteorological variables on a typical clear day (13 July 2018),and their temporal variation in the first three months of the low tower's operation (4 June to 31 August 2018),and in combination with simultaneous data from the high tower,are analyzed.Results show that the data demonstrate reasonable variabilities,and the variables exhibit significant diurnal variation,characteristics of summer values,and considerable differences in summer months.The daily and monthly average albedos above the forest canopy were both 0.13.The daily average soil CO2 concentration was 1726 and 4481 ppm at 2 and 10 cm,respectively.The soil CO2 concentration changed with soil volumetric moisture contents,but showed a weak correlation with soil temperature in summer 2018.As the observatory continues to run and data continue to be collated,further investigation of the long-term variation of monsoon characteristics should be performed in the future.The experiment is useful in ecosystem and atmosphere interaction research,as well as for the development and evaluation of climate models,in the transitional climate zone of the Huaihe River basin.关键词
土壤-植被-大气相互作用/日变化/淮河流域/土壤CO2浓度Key words
Soil-vegetation-atmosphere interaction/Diurnal variation/Huaihe River basin/Soil CO2 concentration引用本文复制引用
Qiudan Dai,Zhenhai Guo,Shufen Sun,Xia Xiao..淮河流域南部丘陵森林地区土壤-植被-大气相互作用:长期野外试验观测的初步分析[J].大气和海洋科学快报（英文版）,2021,14(1):33-39,7.基金项目
This research was supported by the National Natural Science Foundation of China[grant number 41575092]and the National Key Research and Development Program[grant number 2018YFC1506600]. （）
