| 基于自然生态约束空间差异的区域生态安全格局构建 |
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| 引用本文： | 曹玉红,曹卫东,吴威,梁双波.基于自然生态约束空间差异的区域生态安全格局构建[J].水土保持通报,2008,28(1):106-109,118. |
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| 作者姓名： | 曹玉红 曹卫东 吴威 梁双波 |
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| 作者单位： | 1. 内蒙古草地生态重点实验室,省部共建国家重点实验室培育基地,内蒙古,呼和浩特,010021;内蒙古大学,内蒙古,呼和浩特,010021;内蒙古师范大学,内蒙古,呼和浩特,010022
2. 内蒙古草地生态重点实验室,省部共建国家重点实验室培育基地,内蒙古,呼和浩特,010021;内蒙古大学,内蒙古,呼和浩特,010021 |
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| 基金项目： | 内蒙古自然科学基金重大项目
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教育部新世纪优秀人才支持计划
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内蒙古自然科学资助项目
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内蒙古师范大学青年资助项目 |
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| 摘 要： | 在利用TM资料求取皇甫川流域地表特征参数和地表能量平衡各参量的基础上,反演出该流域的瞬时蒸散量,经过尺度转换,得到日蒸散量.在该估算方法中,将水体当作裸地进行处理,但水体和土壤的性质差别很大,用Penman公式对水体蒸发进行了单独估算,整合到流域日蒸散量中,以提高精度.分析结果表明,用该方法反演的日蒸散量与地表状况比较吻合,经过检验,反演的地表温度相对误差为0.58%,反演的日蒸散量平均相对误差为11.75%,都在误差允许范围之内.
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| 关 键 词： | 皇甫川流域 Landsat5TM 蒸散(发) 遥感 应用 遥感方法 估算 皇甫川流域 Remote Sensing Watershed Evapotranspiration 允许范围 误差 差为 地表温度 检验 比较 地表状况 反演 结果 分析 提高精度 整合 蒸发 |
| 文章编号： | 1000-288X（2008）01-0102-04 |
| 收稿时间： | 2007-08-29 |
| 修稿时间： | 2007-10-25 |
Constructing Regional Ecological Security Pattern Based on the Spatial Difference of Eco-environmental Restriction |
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| CAO Yuhong,CAO Weidong,WU Wei and LIANG Shuangbo.Constructing Regional Ecological Security Pattern Based on the Spatial Difference of Eco-environmental Restriction[J].Bulletin of Soil and Water Conservation,2008,28(1):106-109,118. |
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| Authors: | CAO Yuhong CAO Weidong WU Wei and LIANG Shuangbo |
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| Institution: | College of Land Resource and Tourism, Anhui Normal University, Wuhu, Anhui 241000, China;College of Land Resource and Tourism, Anhui Normal University, Wuhu, Anhui 241000, China;Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, China;Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, China;Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, China |
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| Abstract: | Instantaneous evapotranspiration in Huangfuchuan watershed is retrieved based on the estimation of land surface characteristic parameters and fluxes using Landsat 5 TM. Daily evapotranspiration is found by scaling. Water body is dealt with as bare land. The characteristics between water body and soil are very distinct, so Penman model is used to calculate water evaporation and the calculated result is merged into daily evapotranspiration. Results show that daily evapotranspiration retrieved is accord with the status of land surface. The relative error of surface temperature retrieved is 0.58% and the relative error of daily evapotranspiration retrieved is 11.75%, which are both permitted. |
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| Keywords: | Huangfuchuan watershed Landsat 5 TM evapotranspiration remote sensing |
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