Abstract
The spatial zoning of cultivated land is a core aspect of territorial spatial planning and an important basis for implementing differentiated cultivated land protection policies. To provide theoretical guidance for the future direction of the protection and utilization of cultivated land in Shandong Province, this paper built a theoretical framework for the spatial zoning of cultivated land based on the trinity of quantity, quality, and ecology and formed an indicator system for the spatial zoning of cultivated land based on these three elements. Based on the analysis and grading results of spatial zoning indicators of cultivated land, hierarchical clustering analysis was performed on 133 county-level administrative units, and then the cultivated land resources of Shandong Province were divided into four types of zones: Key protection zones, comprehensive promotion zones, multifunctional utilization zones, and ecological utilization zones. Future development directions in relation to the protection and utilization of cultivated land in each type of zone were proposed. The results showed that the spatial zoning of cultivated land based on the trinity of quantity, quality, and ecology has important theoretical and practical significance for guiding the protection and utilization of cultivated land in Shandong Province and other regions.
Highlights
Cultivated land resources are crucial land resources and the basis of China’s food security
To ensure that cultivated land "occupies the best and supplements the best", we suggest that in the territorial spatial planning of Shandong Province, the cultivated land quantity and basic farmland protection area should be used as the main control indicators for the regional cultivated land requisition–compensation balance, and relevant indicators reflecting the quality of cultivated land should be added
This paper built a theoretical framework for the spatial zoning of cultivated land based on the TQQE and clarified the significance of the cultivated land scale, cultivated land quality, and regional ecological environment to maximum the functions of farmland ecosystems
Summary
Cultivated land resources are crucial land resources and the basis of China’s food security. To protect the quantity of cultivated land, after many years of development and improvement, a more perfect system including relevant laws, systems, and executive means has been formed basically for the protection of cultivated land in China [2]. This system has slowed the decline in cultivated land area in the past 10 years, but its guiding role in the management and protection of the quality and ecology of cultivated land needs to be strengthened [3]. In the context of an ecological civilization development strategy, the spatial zoning of cultivated land has important practical significance in terms of relieving the pressure of cultivated land protection, improving the efficiency of cultivated land utilization, and considering the multiple functions of cultivated land, thereby improving the value of cultivated land
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