| 臧俊梅,付晓,刘圣祥,等.广东省耕地多功能评价及时空演变分析[J].广东农业科学,2024,(10-11):- |
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广东省耕地多功能评价及时空演变分析 |
| Multi-functional Evaluation of Cultivated Land and an Analysis of the Temporal and Spatial Evolution in Guangdong Province |
| 投稿时间：2024-08-10 修订日期：2024-10-15 |
| DOI： |
| 中文关键词: 土地利用 耕地 耕地多功能 时空演变 广东省 熵权法 |
| 英文关键词: land use cultivated land multi-functional arable land spatio-temporal evolution Guangdong Province entropy weight method |
| 基金项目:广东省自然科学基金面上项目“乡村振兴战略下的点状供地：理论、模式、路径及广东创新”(2021A1515011934)；广东省土地整治开发中心项目“土地整治项目新增耕地核定技术规范研究”(N6221460)。 |
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| 中文摘要: |
| 【目的】探究广东省21个地级市耕地利用功能的时空演化特征,对于推进广东省耕地资源可持续利用及耕地利用功能优化具有现实意义。【方法】 以广东省21个地级市为评价单元,构建耕地多功能指标体系,采用熵权法、综合指数评价法,对广东省2005—2020年耕地利用功能进行评价。【结果】(1)总体变化上,2005—2020年广东省耕地各功能水平不高,耕地的农业生产功能和经济贡献功能整体处于较低水平,其他各功能整体处于一般水平,仅生态安全功能在2005年和2015年处于较高水平；(2)总体结构上,2005—2020年广东省耕地各功能结构变化较为稳定,波动幅度较小,耕地生态安全功能占比最高,农业生产功能占比最低；(3)子功能时空演变上,2005—2020年广东省耕地各功能的时空格局变化显著。时间维度上,耕地的农业生产功能、社会保障功能、生态安全功能整体呈下降趋势,耕地的粮食安全功能、经济贡献功能、景观游憩功能整体呈上升趋势。空间维度上,耕地的社会保障功能和经济贡献功能空间格局变化较大,其他各功能空间格局变化较为稳定。【结论】广东省耕地综合功能偏弱,各地市耕地利用功能差异较为明显,未来可根据区域耕地利用功能的特点,因地制宜采取多元化、差异化的耕地保护和利用政策,为新时期广东省国土空间利用分区管制规则制定、全域土地综合整治重点区域选择、永久基本农田划定等自然资源利用与管理实践提供参考。 |
| 英文摘要: |
| 【Objective】Exploring the spatial and temporal evolution characteristics of cropland utilization function in 21 prefecture-level cities in Guangdong Province is of practical significance for promoting the sustainable utilization of cropland resources and the optimization of cropland utilization function in Guangdong Province.【Method】Taking the 21 prefecture-level cities in Guangdong Province as the evaluation unit, we constructed a multifunctional index system of arable land, and adopted entropy weight method and comprehensive index evaluation method to evaluate the utilization function of arable land in Guangdong Province from 2005 to 2020.【Result】(1) In terms of overall changes, the level of each function of arable land in Guangdong Province from 2005 to 2020 is not high, the agricultural production function and economic contribution function of arable land are at a lower level as a whole, the other functions are at a general level as a whole, and only the ecological security function is at a higher level in 2005 and 2015; (2) In terms of overall structure, the structure of each function of arable land in Guangdong Province from 2005 to 2020 is not high. 2020, the structural change of each function of arable land in Guangdong Province is relatively stable, with small fluctuation, the ecological safety function of arable land accounts for the highest proportion, and the agricultural production function accounts for the lowest proportion; (3) On the spatial and temporal evolution of sub-functions, the spatial and temporal pattern of each function of arable land in Guangdong Province in the period of 2005-2020 has changed significantly. In the time dimension, the agricultural production function, social security function, and ecological safety function of arable land showed an overall decreasing trend, and the food security function, economic contribution function, and landscape recreation function of arable land showed an overall increasing trend. In the spatial dimension, the spatial patterns of the social security function and economic contribution function of arable land changed greatly, while the spatial patterns of the other functions changed more stably.【Conclusion】The comprehensive function of arable land in Guangdong Province is weak, and the differences in the utilization function of arable land in different cities are obvious. In the future, diversified and differentiated arable land protection and utilization policies can be adopted according to the characteristics of the regional arable land utilization function, so as to provide references for the formulation of the rules on the control of land space utilization zoning in Guangdong Province in the new period, the selection of the key areas for comprehensive land remediation in the whole region, and the delineation of permanent basic farmland, as well as other practices of natural resources utilization and management. The study will provide a reference for the practice of natural resources utilization and management in the new period of Guangdong Province. |
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