%0 Journal Article
%T Characteristics and numerical simulation of surface albedo in temperate desert steppe in Inner Mongolia<br>内蒙古温带荒漠草原生长季地表反射率特征及数值模拟
%A 阳伏林
%A 周广胜
%A 张峰
%A 王风玉
%A 鲍芳
%A 平晓燕
%J 应用生态学报
%D 2009
%I 
%X Based on the meteorological and biological observation data from the temperate desert steppe ecosystem research station in Sunitezuoqi of Inner Mongolia during growth season (from May 1st to October 15th, 2008), the diurnal and seasonal characteristics of surface albedo in the steppe were analyzed, with related model constructed. In the steppe, the diurnal variation of surface albedo was mainly affected by solar altitude, being higher just after sunrise and before sunset and lower in midday. During growth season, the surface albedo was from 0.20 to 0.34, with an average of 0.25, and was higher in May, decreased in June, kept relatively stable from July to September, and increased in October. This seasonal variation was related to the phenology of canopy leaf, and affected by precipitation process. Soil water content (SWC) and leaf area index (LAI) were the key factors affecting the surface albedo. A model for the surface albedo responding to SWC and LAI was developed, which showed a good performance in consistent between simulated and observed surface albedo.
%K temperate desert steppe
%K surface albedo
%K soil water content
%K leaf area index
%K model<br>温带荒漠草原
%K 地表反射率
%K 土壤含水量
%K 叶面积指数
%K 模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=4661D742B5951596EF84BF8EE25C2A76&yid=DE12191FBD62783C&vid=A04140E723CB732E&iid=59906B3B2830C2C5&sid=1EBEF548F614F667&eid=57915694948F9634&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=0