PSR-BASED EVALUATION OF THE CULTIVATED LAND QUALITY IN HAILUN CITY OF HEILONGJIANG PROVINCE
WANG Jian-hua1,3, TAO Pei-feng2, YUAN Yue2, LI Zhi-zhong3,4, YANG Jia-jia3,4
1. Institute of Remote Sensing and Digital Earth, CAS, Beijing 100094, China; 2. Chongqing Geographic Information and Remote Sensing Application Center, Chongqing 401147, China; 3. International Black Land Association, Shenyang 110034, China; 4. Shenyang Center of China Geological Survey, Shenyang 110034, China
Abstract：To scientifically evaluate the quality level of existing cultivated land in Hailun City, Heilongjiang Province, the environmental satellite image, Landsat8 remote sensing image and geochemical survey data are used to extract the information of soil fertility, water content, heavy metal pollution and other indexes. The temperature vegetation dryness index(TVDI) which has a stronger correlation with soil water content, replacing the traditional difference vegetation index(DVI), is applied to establish a soil quality evaluation method based on pressure-state-response (PSR) model. The analytic hierarchy process(AHP) is used to assign weights to each evaluation index, combined with expert scoring and linear interpolation, to realize the quantitative evaluation of evaluation factors and obtain the minimum evaluation units by spatial weight superposition of all evaluation factors. The results show that the first-grade cultivated land accounts for 28.75%, with 71.17% of second-grade, 0.08% of third-grade and below, and the quality of cultivated land is generally high in Hailun City. Finally, some suggestions for improving cultivated land are put forward by analyzing the spatial distribution of cultivated land of different grades.
王建华, 陶培峰, 袁月, 李志忠, 杨佳佳. PSR框架下的黑龙江省海伦市耕地质量评价[J]. 地质与资源, 2020, 29(6): 525-532.
WANG Jian-hua, TAO Pei-feng, YUAN Yue, LI Zhi-zhong, YANG Jia-jia. PSR-BASED EVALUATION OF THE CULTIVATED LAND QUALITY IN HAILUN CITY OF HEILONGJIANG PROVINCE. GEOLOGY AND RESOURCES, 2020, 29(6): 525-532.
2020, Vol. 29 
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