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国土资源遥感  2013, Vol. 25 Issue (3): 14-19    DOI: 10.6046/gtzyyg.2013.03.03
  技术方法 本期目录 | 过刊浏览 | 高级检索 |
基于光能利用效率的区域蒸散量反演模型 ——以玉米种植区为例
苏涛, 冯绍元, 徐英
扬州大学水利科学与工程学院, 扬州 225009
A new method for retrieving estimation of regional evapotranspiration based on radiation use efficiency: A case study of maize
SU Tao, FENG Shaoyuan, XU Ying
College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
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摘要 

以内蒙古河套地区解放闸灌域为研究区域,以实测生物量与土壤含水量及其关系方程为研究基础,建立了基于光能利用效率(radiation use efficiency,RUE) 的区域蒸散量反演模型; 以陆面能量平衡(surface energy balance algorithm for land,SEBAL)模型为参考,对反演的同一时期的区域蒸散量进行对比分析。结果表明: RUE与SEBAL模型反演的区域蒸散量在空间分布和纹理特征方面具有相似性且相关性较高,决定系数高于农业技术推广支持系统(decision support system for agrotechnology transfer,DSSAT)与SEBAL的; 基于RUE建立的区域蒸散量反演模型能够较好地反映区域蒸散量,在监测区植被(或作物)单一的前提下,是一种有效方法。

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李迁
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关键词 DSM构建建筑物检测建筑物边缘提取边缘规则化    
Abstract

With Jiefang gate irrigation area of Hetao region in Inner Mongolia as the research district, and the biomass, the soil water and the relation equation between them in the measured values as the research foundation, the authors set up a regional evapotranspiration retrieving model based on the Radiation Use Efficiency (RUE). The SEBAL(surface energy balance algorithm for land) model was taken as the referenced model to make a comparative analysis between the regional evapotranspirations in the same period. The results showed that the spatial distributions of evapotranspiration estimated by using the RUE method and the SEBAL model were similar in spatial distribution and texture features, and there only existed insigficant differences between the calculated results of the two models. The correlation coefficient between the RUE method and the SEBAL model was remarkably improved in comparison with that of the DSSAT(decision support system for agrotechnology transfer) method and the SEBAL model. It is also proved that the regional evapotranspiration can be better retrieved by the RUE method, with the retrieving accuracy obviously higher than that of the DSSAT method, and hence this method is a new and effective method for monitoring regional evapotranspiration.

Key wordsDSM construction    building detect    extraction of building edge    regulation of building edge
收稿日期: 2012-11-07      出版日期: 2013-07-03
:  S 152.7  
  TP 79  
基金资助:

国家"十二五"科技支撑计划课题(编号: 2011BAD25B05)和江苏省水利动力工程重点实验室开放课题(编号: K100020、K11022)共同资助。

通讯作者: 冯绍元(1963- ),男,博士,教授,博士生导师,主要从事水资源与水环境及节水灌溉技术教学与科研工作。 E-mail: syfeng@yzu.edu.cn。
作者简介: 苏涛(1968-),男,博士后,主要从事定量遥感及其在农业中的应用研究。 E-mail: st7162003@163.com。
引用本文:   
苏涛, 冯绍元, 徐英. 基于光能利用效率的区域蒸散量反演模型 ——以玉米种植区为例[J]. 国土资源遥感, 2013, 25(3): 14-19.
SU Tao, FENG Shaoyuan, XU Ying. A new method for retrieving estimation of regional evapotranspiration based on radiation use efficiency: A case study of maize. REMOTE SENSING FOR LAND & RESOURCES, 2013, 25(3): 14-19.
链接本文:  
https://www.gtzyyg.com/CN/10.6046/gtzyyg.2013.03.03      或      https://www.gtzyyg.com/CN/Y2013/V25/I3/14

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