Scaling of ETM-NDVI for Medium Watershed Area

WANG Qi; YANG Qinke; REN Zongping

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Scaling of ETM-NDVI for Medium Watershed Area

- Scaling of ETM-NDVI for Medium Watershed Area
- Bulletin of Soiland Water Conservation Vol. 29, Issue 3, Pages: 96-99(2010)
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
  2. 西北大学城市与环境学院,陕西,西安,710069
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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WANG Qi, YANG Qinke, REN Zongping. Scaling of ETM-NDVI for Medium Watershed Area[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 96-99.
DOI：

WANG Qi, YANG Qinke, REN Zongping. Scaling of ETM-NDVI for Medium Watershed Area[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 96-99. DOI：

摘要

植被是影响水土流失最重要且最敏感的因素之一。为了更好地估算和监测区域水土流失变化

首先必须在较高时空分辨率下分析植被的动态特征。利用直方图匹配原理

以SPOT/VEGETATIONNDVI影像为参照

对基于ETM影像的NDVI数据进行变换

得到逐月30m分辨率的NDVI产品

分析匹配前后图像的统计参数、直方图相似度和图像逼真度等。结果表明

该变换结果是可靠的

可为区域水土流失动态评价与监测提供植被数据支持。

Abstract

Vegetation is one of the most important and most sensitive impacting factors of soil erosion. Vegetation information products that have high resolution in both time and space are needed to study dynamic changes of vegetation

for better understanding and monitoring of soil and water loss. A method is proposed to get high spatial and temporal resolution NDVI products

by matching the histogram of ETM NDVI( 30 m) to that of SPOT/ VEGET ATION NDVI product ( 1 km

one scene every month) . The estimated NDVI products( 30 m

one scene per month) are analyzed based on several indicators such as statistical characteristics of image

histogram similarity

and image fidelity. Results from the research can be applied to dynamic evaluation and monitoring o f regional soil and water loss.

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