[1]ZHANG Xiaodan,WU Kening,ZHAO Rui,et al.Evaluation of Healthy Productivity of Cultivated Land at County Scale[J].Research of Soil and Water Conservation,2020,27(03):294-300.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 03
Page number:
294-300
Column:
目次
Public date:
2020-04-20
- Title:
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Evaluation of Healthy Productivity of Cultivated Land at County Scale
- Author(s):
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ZHANG Xiaodan1,2, WU Kening1,2, ZHAO Rui1,2, YANG Qijun1,2
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(1.School of Land Science and Technology, China University of Geosciences(Beijing), Beijing 100083, China; 2.Key Laboratory of Land Consolidation and Rehabilitation, ministry of Natural Resources, Beijing 100035, China)
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- Keywords:
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land resources; cultivated land health; cultivated land productivity; evaluation; food security
- CLC:
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F301.2
- DOI:
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- Abstract:
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The cultivated land productivity and the health status of cultivated land are the basis for ensuring food security and sustainable development. Study on the healthy productivity of cultivated land is beneficial to guide high-quality cultivated land to be preferentially allocated to basic farmland and comprehensively implement the quantity, quality and ecological protection of cultivated land. Based on the research of soil health and cultivated land productivity, we defines the connotation of the healthy productivity of cultivated land, and the indicators of biological activity, crop quality and system elasticity were included in the evaluation index system. We used the weighted summation method, the ‘1+X' accumulation model, the continuous product method, the superposition method to conduct empirical research on the study area. The productivity of cultivated land in the study area shows the trend of decreasing from the northeast to the southwest. The results of cultivated land health productivity and cultivated land health diagnosis have similar regularity. The overall healthy productivity of cultivated land in the study area is in good condition. The lower-grade cultivated land mainly distributes in the southern part of the study area and along the ‘S' lake. Most of the cultivated land in the south is located in the hilly area, the soil nutrient content is low and the infrastructure is imperfect, resulting in lower productivity, and heavy metal pollution in cultivated land is serious due to industrial structure and the impact of ‘S' Lake pollution, resulting in most unhealthy irrigated land. The evaluation index system established in this study can reflect the actual situation of the cultivated land healthy productivity in the study area, and can provide some references for the evaluation of the cultivated land healthy productivity at the county scale. In the future, the study should focus on the evaluation system of different scales, exploring measures to improve the healthy productivity of cultivated land, and establishing a long-term monitoring network to provide decision-making basis for permanent basic farmland delineation and farmland protection.