甘肃农业大学学报
甘肅農業大學學報
감숙농업대학학보
Journal of Gansu Agricultural University
2015年
5期
128-133
,共6页
康燕霞%齐广平%黄彩霞%张梅花%马彦麟%殷长琛
康燕霞%齊廣平%黃綵霞%張梅花%馬彥麟%慇長琛
강연하%제엄평%황채하%장매화%마언린%은장침
蒸散发%ASTER数据%DEM数据%黑河流域
蒸散髮%ASTER數據%DEM數據%黑河流域
증산발%ASTER수거%DEM수거%흑하류역
evapotranspiration%ASTER data%DEM data%Heihe River basin
为了深入探寻地形对区域蒸散发模型参数的影响程度,简化坡地蒸散发量的估算过程,利用黑河流域气象资料、ASTER数据和DEM数据,建立了平地和坡地瞬时太阳净辐射、气温间的关系,改进了区域蒸散量的估算模型。结果表明:瞬时太阳净辐射和气温受地形的影响较大,改进后的坡地太阳净辐射和气温的估算过程大大简化,区域蒸散发量的模拟精度有所提高。
為瞭深入探尋地形對區域蒸散髮模型參數的影響程度,簡化坡地蒸散髮量的估算過程,利用黑河流域氣象資料、ASTER數據和DEM數據,建立瞭平地和坡地瞬時太暘淨輻射、氣溫間的關繫,改進瞭區域蒸散量的估算模型。結果錶明:瞬時太暘淨輻射和氣溫受地形的影響較大,改進後的坡地太暘淨輻射和氣溫的估算過程大大簡化,區域蒸散髮量的模擬精度有所提高。
위료심입탐심지형대구역증산발모형삼수적영향정도,간화파지증산발량적고산과정,이용흑하류역기상자료、ASTER수거화DEM수거,건립료평지화파지순시태양정복사、기온간적관계,개진료구역증산량적고산모형。결과표명:순시태양정복사화기온수지형적영향교대,개진후적파지태양정복사화기온적고산과정대대간화,구역증산발량적모의정도유소제고。
To improve the estimation about net solar radiation and air temperature under sloping field, and to simplify the evapotranspiration model under sloping field,the relationship of the net solar radiation and air temperature were established between flat field and sloping field by using meteorological data,AS-TER data and DEM data.The results showed that net solar radiation and air temperature were influenced by terrain obviously.The estimation model of net solar radiation and air temperature under sloping field were simplified widely.The precision of regional evapotranspiration were enhanced obviously.The im-proved model could be applied in complex surface and the study results would promote allocation of water resources and restoration of ecosystem.