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古尔班通古特沙漠与石河子绿洲膜下滴灌棉田能量输送特征的研究 预览 被引量:2

Energy transfer for drip Irrigation under plastic film on cotton farming in desert and oasis, Xinjiang
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摘要 不同生态环境下垫面条件下的能量输送特征有着很大差异,是陆地-大气间相互作用过程研究的重要组成部分。为了探寻近地面层湍流运动规律,定量分析沙漠和绿洲膜下滴灌棉田下垫面物质与能量输送,利用常规气象梯度法观测的数据,根据Monin-Obukhov相似性理论,运用空气动力学方法和能量平衡法,对古尔班通古特沙漠南部流动沙区及其以南100km的石河子绿洲膜下滴灌棉田的能量输送模式及其日变化进程进行了分析研究。结果表明:在沙漠生态条件下,大部分净辐射用于感热通量的散失,另一部分用于向地下传输,少部分则用于潜热输送;在膜下滴灌棉田生态条件下的绿洲能量输送的基本模式为:农田蒸散的潜热能量占绝大部分,少部分用于感热通量和土壤热通量的消耗,同时存在一定的地表能量平衡差额。这些结论为合理配置自然资源、分析和评估绿洲生产潜力提供科学依据。 The energy transfer is much difference in underlying surface of different entironment. It is important part of research on atmosphere-land reciprocity. In this paper, in order to inquire about the turbulent motion rule of near ground and analyze quantitatively underlying surface matter and energy transfer of drip irrigation under plastic film on cotton farming in desert and oasis, energy transport pattern, Bowen ratio and its the daily variation for drip irrigation under plastic film on cotton farming were studied in the mobile desert region of Guerbantunggut Desert and Shihezi oasis 100 km far from its south, using the data of conventional meteorological gradient method, applying the methods of aerodynamic and energy balance, based on the theory of Monin-Obukhov similarity. As a result: the majority of net radiations was dissipate by sensible heat flux under the desert ecological condition, another part was used by underground transmission, little part was used in the latent heat transportation ; so the temperature of desert is higher than that of the places all around it. The basic pattern of oasis energy transport under the drip irrigation cotton field ecological condition is that latent heat of the farmland evapotranspiration is a major part, little part is consumption in the sensible heat flux and the soil heat flux, simultaneously exsisting certain balance difference of surface energy. As different microclimate, Bowen ratio between desert and oasis in the same climate is different. Climate of desert is drier than that of oasis, so Bowen ratio of desert is higher than that of oasis. In a word, these conclusions would supply scientific gists for collocating nature resource reasonably, analyzing and evaluating product potential of oasis.
作者 塔依尔 吕新 李鲁华 Tayir, LU Xin, LI Lu-hua (1 College of Agriculture, Shihexi University, Shihezi 832000,Xinfiang, China; 2 The Key Oasis Eco-agriculture Laboratory of Xinjiang Production and Construction Group. Shihezi 832000 ,Xinjiang, China)
出处 《干旱区地理》 CSCD 北大核心 2007年第1期 94-100,共7页 Arid Land Geography
基金 国家重大基础研究前期研究专项(2003CCA02300)石河子大学科学技术研究发展计划项目(ZRX2005053)及石河子大学“263”青年骨干教师资助项目(NX02022)
关键词 空气动力学法 古尔班通古特沙漠 绿洲下垫面 能量输送 aerodynamic method Gurbantunggut Desert underlying oasis surface energy transfer
作者简介 塔依尔(1972-),男,维吾尔族,新疆石河子市人,石河子大学。大学本科,在职硕士,讲师,主要研究方向为农业气象与生态环境.E-mail:tayir789@163.com
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