Application of Shuttleworth-Wallace Model in Hanjiang River Basin Using AVHRR NDVI Data

CAO Qihuan; LIU Yuan; ZHOU Maichun; ZHONG Xiangning

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Application of Shuttleworth-Wallace Model in Hanjiang River Basin Using AVHRR NDVI Data

更新时间：2023-12-11

- Application of Shuttleworth-Wallace Model in Hanjiang River Basin Using AVHRR NDVI Data
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 52, Issue 2, Pages: 121-128(2013)
- 作者机构：
  
  1. 华南农业大学水利与土木工程学院,广东,广州,510642
  2. 广东珠荣工程设计有限公司,广东,广州,510610
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013，
  
  Published Online：25 March 2013，
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CAO Qihuan, LIU Yuan, ZHOU Maichun, et al. Application of Shuttleworth-Wallace Model in Hanjiang River Basin Using AVHRR NDVI Data. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 52(2):121-128(2013)
DOI：

CAO Qihuan, LIU Yuan, ZHOU Maichun, et al. Application of Shuttleworth-Wallace Model in Hanjiang River Basin Using AVHRR NDVI Data. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 52(2):121-128(2013) DOI：

摘要

基于AVHRR NDVI（归一化植被指数）、IGBP土地覆盖及CRU气象数据，利用Shuttleworth-Wallace（S-W）模型估算韩江流域1981-2000年的潜在蒸散发（PET）。结果表明

流域PET空间分布呈显著的非均匀性，从714.8~1 570.7 mm/a，主要受土地覆盖类型和地理位置影响；PET随植被类型和叶面积指数（LAI）季节性变化；输入数据的时空分辨率对PET的估算精度有较大影响；与Thornthwaite公式和FAO-56方法相比，S-W模型能够很好地反映地表变化对PET的影响。BTOPMC模型的应用表明，由SW模型估算的PET在分布式水文模拟中取得了较好的效果。

Abstract

Using AVHRR NDVI (normalized difference vegetation index)

IGBP land cover and CRU meteorological database

potential evapotranspiration (PET) over Hanjiang River basin in 1981-2000 was estimated by Shuttleworth-Wallace (S-W) model. Spatially

PET was distributed over the basin strikingly non-uniformly from 714.8 mm to 1 570.7 mm yearly

mainly because of the influence of land cover types and geographical location. Temporally

PET changed significantly with vegetation seasonal development

thus with vegetation leaf area index (LAI). Temporal and spatial resolutions of input data greatly affected PET estimation accuracy. Compared with Thornthwaite formula and FAO-56 method

S-W model can reflect the effects of vegetation change on PET very well. By applying the derived PET to a distributed hydrological model - BTOPMC

good results was achieved in the Hanjiang River basin.

关键词

潜在蒸散发ShuttleworthWallace模型NDVI叶面积指数植被覆盖韩江流域

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