兴安落叶松林水热通量变化特征及空间代表性  

Characteristics and Spatial Representation of Water Heat Flux in Larix gmelinii Forest

作　　者：王美媛 张秋良[1] 刘璇[1] 代海燕[2] Wang Meiyuan;Zhang Qiuliang;Liu Xuan;Dai Haiyan(Inner Mongolia Agricultural University,Hohhot 100019,P.R.China;Inner Mongolia Ecology and Agricultural Meteorology Centre)

机构地区：[1]内蒙古农业大学,呼和浩特100019 [2]内蒙古生态与农业气象中心

出　　处：《东北林业大学学报》2018年第9期69-74,共6页Journal of Northeast Forestry University

基　　金："十三五"国家重点研发计划(2017YFC0504003)

摘　　要：以兴安落叶松林为研究对象,利用涡度相关系统观测数据和气候学足迹,分析了兴安落叶松林生长季不同时间尺度水热通量的变化和通量源区的分布特征。结果表明:典型天气状态下兴安落叶松林的水热通量日变化特征呈现单峰曲线。在典型多云状态下,水热通量受云层遮挡,变化波动性较大,整体上与净辐射通量的变化趋势保持一致;在典型晴天状态下,兴安落叶松林在生长旺季水热通量达到峰值后逐渐下降。在水热通量和净辐射通量的月变化上,8月份最大风向上的通量源区面积小于9月份,兴安落叶松林生态系统处于生长旺季的源区面积小于其他时期。By using the eddy correlation system observation data,we studied the distribution characteristics of Larix gmelinii in non-growing season rain,water and heat fluxes of different time scale variations and flux source area.The water heat flux diurnal variation characteristics of L.gmelinii forest typical weather conditions showed a single peak curve in the condition of water quantity of typical cloudy,and the overall trend and the net radiation flux were consistent.In a typical sunny state,the water heat flux of L.gmelinii reached peak during the growing season,and then gradually decreased.The flux source area in August was less than that in September,and the source area of L.gmelinii forest ecological system in the growing season was less than that in other periods.

关 键 词：兴安落叶松林 涡动相关法 水热通量 

分 类 号：S757[农业科学—森林经理学]