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[1]LI Maosen,WANG Jijun,CHEN Chao,et al.Ecological Suitability Evaluation of Agricultural Land in Xiannangou Watershed of Ansai Using GIS System[J].Research of Soil and Water Conservation,2018,25(01):237-242.

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Ecological Suitability Evaluation of Agricultural Land in Xiannangou Watershed of Ansai Using GIS System

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 01 Page number: 237-242 Column: Public date: 2018-02-28

Title:: Ecological Suitability Evaluation of Agricultural Land in Xiannangou Watershed of Ansai Using GIS System

Author(s):: LI Maosen¹, WANG Jijun^1,2, CHEN Chao⁴, CHENG Simin^2,3, LI Yue¹; 1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China;
4. Institute of Land Engineering & Technology, Shaanxi Provincial Land Engineering Construction Group, Xi’an, Shaanxi 710075, China

Keywords:: Xiannangou watershed; suitability evaluation; GIS; agricultural land classification

CLC:: S1127

DOI:: -

Abstract:: Based on the site conditions, soil properties and land use status, 8 factors were used to construct the ecological suitability index system of agricultural land in Xiannangou Watershed. And the weights of each evaluation factor were determined by analytic hierarchy process and expert scoring method. With the support of remote sensing and geographic information system, the suitability evaluation model was used to quantitatively evaluate the ecological suitability of agricultural land, then the land use types were divided into four grades. We combined the importance of land use types and suitability of the classification of agricultural land to divide the agricultural land in the watershed. The results show that the area suits to orchard is 225.46 hm², accounting for 5.09% of the total area; the area only suits to cultivation is 405.68 hm², making up 9.17% of the total area; the area suits to woodland and orchard is 156.96 hm², taking up 3.55% of the total area; the area only suits to orchard is 773.15 hm², accounting for 17.47% of the total area; the area suits to woodland and meadow is 881.43 hm², accounting for 19.91% of the total area; the area only suits to woodland is 409.91 hm², accounting for 9.26% of the total area; the area only suits to meadow is 1 490.00 hm², accounting for 33.66%of the total area. The remaining unsuitable and unproductive area is 83.43 hm², accounting for 1.89% of the total area. These results can provide a scientific reference for the reasonable division of agricultural land in Xiannangou Watershed.

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