盘锦芦苇湿地土壤热通量变化特征研究  

Variation characteristics of soil heat flux in Panjin reed wetland

作　　者：吕国红[1] 王笑影[1] 贾庆宇[1] 温日红[1] 谢艳兵[1] LV Guo-hong;WANG Xiao-ying;JIA Qing-yu;WEN Ri-hong;XIE Yan-bing(Institute of Atmospheric Environment,China Meteorological Administration,Shenyang 110166,China)

机构地区：[1]中国气象局沈阳大气环境研究所,辽宁沈阳110166

出　　处：《气象与环境学报》2018年第6期156-160,共5页Journal of Meteorology and Environment

基　　金：国家自然科学基金(31501215);中央级公益性科研院所基本科研业务费重点项目(2016SYIAEZD2);专项资金(2017SYIAEMS3)共同资助

摘　　要：以盘锦芦苇湿地为研究对象,分析了2015年3月至2016年2月不同土壤深度土壤热通量的动态变化特征及其土壤温度对土壤热通量的影响。结果表明:不同土壤深度的土壤热通量日和年变化基本呈"S"形。土壤热通量日动态变化幅度随着土壤深度的增加而减小,日均值呈5 cm> 10 cm> 15 cm。不同深度的土壤热通量日均值呈春季>夏季>秋季>冬季。土壤热通量的日动态变化较规律,总体呈晴天>阴天>雨天。15 cm土壤深度的土壤温度显著影响着不同土壤深度的土壤热通量,并且随土壤深度的增加,相关性也越高。Taking reed wetland in Panjin as study testbed,the dynamic variation of soil heat flux at different soil depths and the effect of soil temperature on soil heat flux were analyzed.The results show that diurnal and annual variations of soil heat flux present an"S"curve pattern for different soil depths.The amplitude of diurnal variation of soil heat flux obviously decreased along with the soil depth.Daily-averaged soil heat fluxes show high values at 5 cm depth,followed by that at 10 cm depth and 15 cm depth.For soil heat flux in four seasons,the maximum value of daily-averaged soil heat flux is in spring,followed by that in summer and autumn,with the lowest value in winter.The diurnal variations of soil heat flux show the same characteristic under different weather types.The amount of soil heat flux under different weather types in order from largest to smallest is sunny days>cloudy days>rainy days.Soil temperature at 15 cm depth affects the soil heat flux of different depths significantly.The correlation coefficient between soil temperature at 15 cm depth and soil heat flux of different depths become larger along with the depth of the soil layer.

关 键 词：芦苇湿地 土壤热通量 土壤温度 

分 类 号：S152[农业科学—土壤学]