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极端干旱区胡杨根系吸水的二维数学模型

李建林1,2;冯起2;司建华2;常宗强2;巨登三3;郭巧玲2   

  1. 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
  • 收稿日期:2008-09-22 修回日期:1900-01-01 出版日期:2009-06-10 发布日期:2009-06-10

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

LI Jian-lin1,2;FENG Qi2;SI Jian-hua2;CHANG Zong-qiang2;JU Deng-san3;GUO Qiao-ling2   

  1. 1Institute of Resource & Environment, Henan Polytechnic University, Jiaozuo 454003, He’nan, China;2Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;3Administrative Office of Hydrology and Water Resources of the Upper Reaches of the Yellow River, Lanzhou 730000, China
  • Received:2008-09-22 Revised:1900-01-01 Online:2009-06-10 Published:2009-06-10

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。

关键词: 桔小实蝇, 种群动态, 西双版纳

Abstract: To study the water uptake by Populus euphratica root is of signifi cance for the maintenance and regeneration of P. euphratica and other plants in extremely arid region. Based on the measurements at Ejina Banner, Inner Mong olia of North China, the root system distribution of P. euphratica and the s oil 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 relat ive error value between measured and simulated values was 902%, and the maximu m relative error value was 1784%, suggesting that the built model better refle cted the water uptake by P. euphratica root, being available in further stud ying the SPAC of P. euphratica.

Key words: Bactrocera dorsalis, Population dynamics, Xishuangbanna