Identification the spatial threshold of ecological indicator NDVI by application of optimal dividing algorithm for ordinal

Author

Li Xiaomei ; Sha Jinming ; Meng Xingmin

Author_Institution

Inst. of Environ. Sci., Fujian Normal Univ., Fuzhou, China

Volume

8

fYear

2010

fDate

10-12 Aug. 2010

Firstpage

4435

Lastpage

4439

Abstract

Ecological threshold is the point or zone between alternate ecosystems. In the threshold, ecological process parameters, function and composition change fiercely, while they are relatively stable out of the threshold. Normalized Difference Vegetation Index (NDVI) is usually seen as an important indicator of eco-environment. The paper aims to identify NDVI threshold zone by use of the optimal dividing algorithm for ordinal specimen as the quantitative tool combined with qualitative discrimination principles. Results show that NDVI ecological thresholds are clearly discriminated and closely consistent with the actual landscape, optimal dividing algorithm is an effective tool for identifying the regional ecological threshold.

Keywords

ecology; environmental science computing; ecological indicator normalized difference vegetation index; ecological process parameters; optimal dividing algorithm; ordinal specimen; qualitative discrimination principles; quantitative tool; regional ecological threshold; spatial threshold identification; Classification algorithms; Clustering algorithms; Concrete; Ecosystems; Partitioning algorithms; Pixel; Vegetation mapping; Fuzhou; NDVI; ecological threshold; optimal dividing algorithm for ordinal specimen;

fLanguage

English

Publisher

ieee

Conference_Titel

Natural Computation (ICNC), 2010 Sixth International Conference on

Conference_Location

Yantai, Shandong

Print_ISBN

978-1-4244-5958-2

Type

conf

DOI

10.1109/ICNC.2010.5583497

Filename

5583497