Guangdong nongye kexue (Mar 2023)
Evaluation of the Effectiveness of Paddy Fields in Wuchuan, Zhanjiang City
Abstract
【Objective】The implementation of paddy field reclamation project is one of the arable land protection measures in China in recent years, which can exploit the potential of land resources, realize the improvement of arable land quality and implement the policy of occupancy and replenishment balance. In order to understand the benefits of implementation of paddy field reclamation project and build a propagable and replicable model, it is necessary to evaluate the effectiveness of paddy field reclamation construction.【Method】The evaluation index system of the effectiveness of paddy field reclamation was constructed by PSIR model, integrated weighting of indicators was conducted based on the improved hierarchical analysis and entropy method of D-number theory, and the TOPSIS method was applied to evaluate the comparison and grade determination of reclaimed paddy fields in Wuchuan City from 2014 to 2019.【Result】From the evaluation results of each subsystem, the pressure index of Meilu Street was highest (0.96), and that of the lower ones were Tangzhui Town, Huangpo Town, Changqi Town, Zhangpu Town and Zhenwen Town with a mean value of 0.09; the areas with higher status index were Haibin Street, Zhenwen Town and Tangzhui Town with a mean value of 0.76, and the areas with lower status index were Tanba Town, Tangwei Street, Lanshi Town, Meilu Street and Qianshui Town with a mean value of 0.2; the areas with higher impact index were Meilu Street, Dashanjiang Street, Tangwei Street and Wangcungang Town with a mean value of 0.73, and those with lower impact index were Zhenwen Town, Tangzhui Town and Huangpo Town with a mean value of 0.19. The higher response index was 0.79 in Lanshi Town, Wuyang Town and Tanba Town, and the lower was 0.17 in Dashanjiang Street, Tangzhui Town and Tangwei Town. The higher coordination of reclaimed paddy fields in Wuchuan City from 2014 to 2019 was found in Haibin Street (1.58), Meilu Street (1.51) and Wuyang Town (1.46), while the lower coordination was found in Zhenwen Town (1.15), Tangzhui Town (1.09) and Huangpo Town (1.05). The value of the effectiveness of reclaimed paddy fields was negatively correlated with the local level of agricultural economic development and the per capita income of farmers.【Conclusion】The effectiveness of reclaimed paddy fields in Wuchuan City from 2014 to 2019 varies significantly, showing a pattern of "poorer results in the west and better results in the east and south". The overall results are good, with positive impacts on the local economy, ecology and society. Each region should start from the weak point, strengthen infrastructure construction and promote the centralized and large-scale use of paddy fields to obtain better results.
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