Spatio-Temporal Characteristics and Obstacle Factors of Cultivated Land Resources Security

Liejia Huang,Weiyan Hu,Yue Feng,Boqing Zhang

doi:10.3390/su13158498

Liejia Huang, Weiyan Hu + Show 2 more

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https://doi.org/10.3390/su13158498

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Abstract

The security of cultivated land resources is closely related to a country’s food security, economic security and social security, and as such is always the top priority of those responsible for the governance and administration of state affairs. The study area is 13 prefecture-level cities in Hubei Province. An entropy weight method, comprehensive index method, spatial analysis and obstacle degree model are employed to explore the spatio-temporal characteristics and obstacle factors of cultivated land resources in quantity, quality and ecological security. The study shows that (1) the security level of cultivated land resources in Hubei Province showed an upward trend between 2010 and 2019. The land resources’ quality and ecological security showed an upward trend, while quantity security showed a downward trend. (2) The security of cultivated land resources presents obvious spatial differences, generally showing a decreasing trend from west to east. Among them, quantity security presents a spatial pattern of being high in the central, low in the east and lower in the west of Hubei Province. Quality security presents a spatial pattern of being high in the central region and low in the east and west. Ecological security presents a spatial pattern of being high in the west and low in the east. (3) The main obstacles to its security in quantity, in quality and in ecology are obviously different. Finally, some countermeasures are put forward to ensure the security of cultivated land resources from the perspectives of quantity, quality and ecological security, and to assist with the implementation of different protection policies in the western, central and eastern areas of Hubei. This study expands the content and perspective of cultivated land resources security and has a certain novelty in the selection of the index of water resources per unit of land area, and the application of the obstacle degree model expands the research on the influencing factors of cultivated land resource security.

Highlights

Food security is the basis of national security, and the most basic condition for achieving food security is guaranteeing basic self-sufficiency in food
The security of cultivated land resources (SCLR) evaluation system in Hubei Province was constructed according to the connotation of SCLR, from three dimensions of quantity security, quality security and ecological security of cultivated land (Table 1)
The security degree of cultivated land resources showed an upward trend from 2010 to 2019; the security degree gradually improved throughout this period

Summary

Introduction

Food security is the basis of national security, and the most basic condition for achieving food security is guaranteeing basic self-sufficiency in food. Cultivated land resources are the foundation of self-sufficiency in food [1,2]. Xi Jinping, the General Secretary of the Communist Party of China’s Central Committee, stressed that China’s rice bowls should mainly contain Chinese grain, and cultivated land is the lifeblood of food production. As such, cultivated land should be protected in the same way that pandas are protected, and the country should strictly guard and defend the red line of the 1.8 billion mu of cultivated land. That land provides the basic requirements of cultivated land resources. The state has already issued a series of policies to protect the cultivated land, in view of the cultivated land loss problem in the urbanization process.

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