新疆典型绿洲农田陆面过程特征的模拟研究  

Simulation and Analysis of Land Surface Process on the Typical Oasis Cropland in Xinjiang

作　　者：井长青[1] 安沙舟[1] 

机构地区：[1]新疆农业大学草业与环境科学学院/草地生态自治区重点实验室,乌鲁木齐830052

出　　处：《新疆农业科学》2017年第1期171-178,共8页Xinjiang Agricultural Sciences

基　　金：国家自然科学基金项目(41561021)"陆面模式中根系吸水过程的发展及其对中亚干旱区荒漠生态系统碳过程的影响";中国博士后科学基金第60批面上资助(2016M602952XB)"新疆干旱荒漠-绿洲生态系统陆面过程特征分析研究";新疆农业大学博士后流动站资助~~

摘　　要：【目的】验证Co LM陆面模式对新疆典型绿洲农田生态系统的模拟效果,分析绿洲农田生态系统陆面过程特征。【方法】利用新疆沙湾县典型绿洲农田站点乌兰乌苏试验站2009~2010年两年的气象数据驱动陆面模式,验证模型精度,分析新疆典型绿洲农田生态系统能量分配,及其日、季变化特征。【结果】乌兰乌苏站站点能量通量表现为净辐射通量>潜热通量>感热通量,能量分配以潜热通量为主;Co LM陆面模式对站点能量通量的模拟结果较好。【结论】模型对各个能量分量的日变化、季节变化特征模拟均较好,但是对感热通量在农田生长季的模拟不理想,模拟值较高。[ Objective] The project aims to verify the model performance of CoLM for the simulation on the typical oasis cropland ecosystem in Xinjiang, and analyze the characteristic of the land surface process. [ Method ] Two years of meteorological data from 2009 to 2010 in CN -Wul station were used to drive the land surface model, verify the model accuracy in this cropland site, and analyze the energy distribution characteris- tics, the daily and seasonal variations of this cropland ecosystem. [ Result] The results showed that the energy flux： Rnet 〉 Qle 〉 Qh, the latent heat flux was the main part of the energy distribution; CoLM showed a good performance to the typical cropland ecosystem. [ Conclusion] This land surface model can correctly de- scribe the diurnal variation and seasonal variation of the energy flux, but of sensible heat flux in the field growth season is not ideal, because the simulation value is higher than that of the observations.

关 键 词：绿洲 农田生态系统 陆面过程 Co LM 能量通量 

分 类 号：S15[农业科学—土壤学]