高级检索+

中国耕地利用显性转型与隐性转型耦合协调时空演变及影响因素分析

Spatiotemporal evolution and influence factors of coupling coordination between cultivated land use dominant transition and recessive transition in China

  • 摘要: 探讨耕地利用显性转型与隐性转型的耦合作用关系,可为协调二者间冲突,实现耕地保护与可持续利用提供有益参考。该研究基于人地关系地域系统理论,构建耕地利用显性与隐性转型相互作用理论框架,采用熵值法、耦合协调模型、协调影响力模型等方法,揭示2000—2020年中国31个省份耕地利用显性转型与隐性转型水平及其耦合协调度的时空演变特征,并分析显性转型与隐性转型耦合协调度的影响因素。结果表明:1)2000—2020年间,中国耕地利用显性转型水平总体呈现下降趋势,东北部与东部传统农业省份的显性转型水平普遍较高,而东南沿海经济发达省份以及南部、西部省份的显性转型水平普遍较低。耕地利用隐性转型水平总体呈现上升趋势,东部沿海与西部内陆省份拥有较高的隐性转型水平,并对周边省份产生辐射带动。2)研究期内,中国耕地利用显性转型与隐性转型耦合协调度持续上升,呈现出失调阶段省份减少、协调阶段省份增加的变化趋势,并形成“东部领先、西部追赶、中部落后”的空间格局。宁夏等9个省份的耦合协调类型由隐性转型滞后型转变为显性转型滞后型,而新疆由显性转型滞后型转变为隐性转型滞后型。北部省份以隐性转型滞后型为主,而南部省份则以显性转型滞后型为主。3)人均耕地面积、平均斑块面积、地均机械总动力、耕地灌溉比例、地均第一产业产值等指标对耕地利用显性转型与隐性转型耦合协调性产生阻碍作用,而土地垦殖率、斑块密度、边缘密度、耕地斑块占景观面积比例、地均化肥用量、地均农药用量、地均塑料薄膜用量、地均粮食产量等指标则产生推动作用。因此,应根据区域实际情况,制定差异化耕地保护与利用对策,以实现区域耕地利用显性转型与隐性转型协同发展。

     

    Abstract: Cultivated land is one of the most important resource bases for national food security. The pattern of the cultivated land use can also shift from one to another, including the dominant and recessive transitions. It is often required to coordinate the conflict between cultivated land use and dominant and recessive transitions. However, previous studies have been focused mainly on their separation. It is still lacking in the systematic understanding of the cultivated land use transition. In this study, a theoretical framework was proposed for the interaction between cultivated land use dominant and recessive transitions, according to the human-earth system theory. The evaluation index was further established for the transition of the cultivated land use. The entropy weight method was utilized to determine the spatiotemporal evolution of the cultivated land use dominant and recessive transition in 31 provinces in China from 2000 to 2020. The coupling coordination model was also adopted to measure the coupling coordination degree between two transitions. Additionally, the coordination influence model was applied to explore the influence factors. The results show that: 1) A downward trend was found in the development level of the cultivated land dominant transition in China from 2000 to 2020. The higher levels were observed in the agricultural provinces in the northeastern and eastern regions. While the lower levels were the provinces in the southwestern, southern, and western regions. By contrast, an upward trend was found in the development level of the cultivated land use recessive transition in China. The higher levels were in the provinces in the eastern coastal and western inland regions, thus driving the development level of the surrounding provinces. 2) There was a gradual increase in the coupling coordination degree between cultivated land dominant and recessive transitions in the study period. The decreasing provinces were in the imbalance stage, whereas the increasing provinces were in the coordination stage. There was the spatial pattern of “leading in the east, catching up in the west, and lagging behind in the middle”. Furthermore, the coupling coordination of nine provinces (including Ningxia) was shifted from the recessive to the dominant transition lagging types. While Xinjiang was shifted from the dominant to the recessive transition lagging type. Additionally, the northern provinces were characterized by the dominant transition lagging types, while the southern provinces were the recessive ones. 3) There was the negative effect of the per capita cultivated land area, average patch area, average total mechanical power, irrigation ratio of cultivated land, and average output value of the primary industry on the coupling coordination between cultivated land dominant and recessive transitions. While the positive effect was found in the land reclamation rate, patch density, edge density, proportion of cultivated land patches to landscape area, average fertilizer input, average pesticide input, average plastic film input, and average grain yield. This finding can also offer practical insight into the decision-making on the cultivated land protection and sustainable utilization for food security.

     

/

返回文章
返回