极端干旱区胡杨根系吸水的二维数学模型  

Two-dimensional model of Populus euphratica root water uptake in extremely arid region of China

作　　者：李建林[1,2] 冯起[2] 司建华[2] 常宗强[2] 巨登三[3] 郭巧玲[2] 

机构地区：[1]河南理工大学资源环境学院,河南焦作454003 [2]中国科学院寒区旱区环境与工程研究所,兰州730000 [3]黄河水利委员会上游水文水资源局,兰州730000

出　　处：《生态学杂志》2009年第6期1188-1193,共6页Chinese Journal of Ecology

基　　金：国家自然基金项目(40725001和40671010);河南理工大学博士基金资助项目

摘　　要：依据在极端干旱区额济纳旗的实测资料,对胡杨根系及根区土壤水分特征进行了分析,借鉴国内外成熟的植物根系吸水模型,建立了胡杨根系吸水的二维数学模型。模型结果与实测结果平均相对误差为9.02%,最大相对误差为17.84%。所建模型基本反映了胡杨根系吸水的实际状况,对胡杨根系分布、吸水及胡杨SPAC系统进一步的研究提供了有益的参考。To study the water uptake by Populus euphratica root is of significance for the maintenance and regeneration of P. euphratica and other plants in extremely arid region. Based on the measurements at Ejina Banner, Inner Mongolia of North China, the root system distribution of P. euphratica and the soil moisture content in P. euphratica root zone were analyzed, and a two-di- mensional model of P. euphratica root water uptake was built. The mean relative error value be- tween measured and simulated values was 9.02%, and the maximum relative error value was 17.84%, suggesting that the built model better reflected the water uptake by P. euphratica root, being available in further studying the SPAC of P. euphratica.

关 键 词：极端干旱区 胡杨 根系吸水 二维模型 

分 类 号：S792.11[农业科学—林木遗传育种]