Comprehensive environment-suitability evaluation model about Carya cathayensis

On the relation between the suitable environment and the distribution areas of Carya cathayensis Sarg., the current studies are mainly committed to qualitative descriptions, but did not consider quantitative models. The objective of this study was to establish a environment-suitability evaluation mo...

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Bibliographic Details
Published in:International journal of agriculture and biology 2013-01, Vol.15 (4), p.777-781
Main Authors: Da-Sheng, W. (Zhejiang Univ., Hangzhou (China). Institution of Remote Sensing and Information System Application), Li-Juan, L. (Zhejiang A and F Univ., Zhejiang (China). School of Information Engineering), Qin-Fen, Y. (Zhejiang A and F Univ., Zhejiang (China). School of Information Engineering)
Format: Article
Language:English
Subjects:
CARYA
CHINA
ECOLOGY
ENVIRONMENTAL FACTORS
HUMIDITY
NUT CROPS
PHYSIOGRAPHIC FEATURES
SOIL PARENT MATERIALS
SOIL TYPES
SOLAR RADIATION
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Summary:On the relation between the suitable environment and the distribution areas of Carya cathayensis Sarg., the current studies are mainly committed to qualitative descriptions, but did not consider quantitative models. The objective of this study was to establish a environment-suitability evaluation model which used to predict potential suitable areas of C. cathayensis. Firstly, the 3 factor data of soil type, soil parent material and soil thickness were obtained based on 2-class forest resource survey, and other factor data, which included elevation, slope, aspect, surface curvature, humidity index, and solar radiation index, were extracted from DEM (Digital Elevation Model). Additionally, the key affecting factors were defined by PCA (Principal Component Analysis), the weights of evaluation factors were determined by AHP (Analysis Hierarchy Process) and the quantitative classification of single factor was determined by membership function with fuzzy mathematics. Finally, a comprehensive environment-suitability evaluation model was established and which was also used to predict the potential suitable areas of C. cathayensis in Daoshi Town in the study region. The results showed that 85.6% of actual distribution areas were in the most suitable and more suitable regions and 11.5% in the general suitable regions.
ISSN:1560-8530
1814-9596