| 基于GIS和改进型土地生态适宜性评价模型的茶叶适宜性综合评价 |
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| 作者姓名： | LI Bo ZHANG Feng ZHANG Li-Wen HUANG Jing-Feng JIN Zhi-Feng D. K. GUPTA |
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| 作者单位： | Departamet of Biochemistry,Molecular Cell Biology of Plant Experimental Institution,Granada(Spain) |
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| 基金项目： | Supported by the Agricultural Science and Technology Achievement Transformation Foundation of the Ministry of Sciences and Technology,China (No. 2008GB24160442);the National Natural Science Foundation of China (Nos. 40871158and 51108405 ) |
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| 摘 要： | Tea(Camellia sinensis) is one of the most valuable cash crops in southern China;however,the planting distribution of tea crops is not optimal and the production and cultivation regions of tea crops are restricted by law and custom.In order to evaluate the suitability of tea crops in Zhejiang Province,the annual mean temperature,the annual accumulated temperature above 10 C,the frequency of extremely low temperature below 13 C,the mean humidity from April to October,slope,aspect,altitude,soil type,and soil texture were selected from climate,topography,and soil factors as factors for land ecological evaluation by the Delphi method based on the ecological characteristics of tea crops.These nine factors were quantitatively analyzed using a geographic information system(GIS).The grey relational analysis(GRA) was combined with the analytic hierarchy process(AHP) to address the uncertainties during the process of evaluating the traditional land ecological suitability,and a modified land ecological suitability evaluation(LESE) model was built.Based on the land-use map of Zhejiang Province,the regions that were completely unsuitable for tea cultivation in the province were eliminated and then the spatial distribution of the ecological suitability of tea crops was generated using the modified LESE model and GIS.The results demonstrated that the highly,moderately,and non-suitable regions for the cultivation of tea crops in Zhejiang Province were 27 552.66,42 724.64,and 26 507.97 km 2,and accounted for 28.47%,44.14%,and 27.39% of the total evaluation area,respectively.Validation of the method showed a high degree of coincidence with the current planting distribution of tea crops in Zhejiang Province.The modified LESE model combined with GIS could be useful in quickly and accurately evaluating the land ecological suitability of tea crops,providing a scientific basis for the rational distribution of tea crops and acting as a reference to land policy makers and land use planners.
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| 关 键 词： | analytic hierarchy process(AHP) grey relational analysis(GRA) soil temperature topography |
| 收稿时间： | 26 July 2011 |
Comprehensive suitability evaluation of tea crops using GIS and a modified land ecological suitability evaluation model |
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| LI Bo,ZHANG Feng,ZHANG Li-Wen,HUANG Jing-Feng,JIN Zhi-Feng,D. K. GUPTA.Comprehensive suitability evaluation of tea crops using GIS and a modified land ecological suitability evaluation model[J].Pedosphere,2012,22(1):122-130. |
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| Authors: | LI Bo ZHANG Feng ZHANG Li-Wen HUANG Jing-Feng JIN Zhi-Feng and D K GUPTA |
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| Institution: | College of Public Administration, Zhejiang University, Hangzhou 310058 (China);Institute of Agricultural Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058 (China);Institute of Agricultural Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058 (China);Institute of Agricultural Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058 (China);Zhejiang Climatic Centre, Zhejiang Meteorological Bureau, Hangzhou 310017 (China);Departametof Biochemistry, Molecular Cell Biology of Plant Experimental Institution, Granada (Spain) |
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| Abstract: | Tea (Camellia sinensis) is one of the most valuable cash crops in southern China; however, the planting distribution of tea crops is not optimal and the production and cultivation regions of tea crops are restricted by law and custom. In order to evaluate the suitability of tea crops in Zhejiang Province, the annual mean temperature, the annual accumulated temperature above 10 oC, the frequency of extremely low temperature below -13 oC, the mean humidity from April to October, slope, aspect, altitude, soil type, and soil texture were selected from climate, topography, and soil factors as factors for land ecological evaluation by the Delphi method based on the ecological characteristics of tea crops. These nine factors were quantitatively analyzed using a geographic information system (GIS). The grey relational analysis (GRA) was combined with the analytic hierarchy process (AHP) to address the uncertainties during the process of evaluating the traditional land ecological suitability, and a modified land ecological suitability evaluation (LESE) model was built. Based on the land-use map of Zhejiang Province, the regions that were completely unsuitable for tea cultivation in the province were eliminated and then the spatial distribution of the ecological suitability of tea crops was generated using the modified LESE model and GIS. The result demonstrated that the highly, moderately, and non-suitable regions for the cultivation of tea crops in Zhejiang Province were 27 552.66, 42 724.64, and 26 507.97 km2, and accounted for 28.47%, 44.14%, and 27.39% of the total evaluation area, respectively. Validation of the method showed a high degree of coincidence with the current planting distribution of tea crops in Zhejiang Province. The modified LESE model combined with GIS could be useful in quickly and accurately evaluating the land ecological suitability of tea crops, providing a scientific basis for the rational distribution of tea crops and acting as a reference to land policy makers and land use planners. |
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| Keywords: | analytic hierarchy process (AHP) grey relational analysis (GRA) soil temperature topography |
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