Study on the Contradiction between Population and Cultivated Land and the Priority Protection of Cultivated Land in the Policy of Poverty Alleviation: A Case Study of the Upper Reaches of Min River, Sichuan Province, China

Abstract

The contradiction between population and cultivated land has always been an urgent global problem, and one that is particularly prominent in China. Based on the spatial–temporal evolution of cultivated land, this paper discusses the human–land contradiction and its development trend. Then, according to the threshold of human–land contradiction and different protection objectives, the priority protection area of cultivated land was simulated. The results showed that: (1) the cellular automata (CA)–Markov model is suitable for the study area. The cultivated land in the study area increased at a rate of 4.40 sq km per year; (2) the spatial and temporal change in the cultivated land in Songpan was the largest. The center of gravity of cultivated land is moving to the northeast, and the moving rate is increasing year on year; (3) 90% of the study area was in the human–land coordination and the change in the ratio of accumulation and cultivation in some areas (such as Songpan) is increasing, making the human–land contradiction worse; (4) under a protection target of 25–100%, the priority protection area of cultivated land increased from 2.05 × 103 km2 to 3.46 × 103 km2, and the patch aggregation degree was strengthened. This study was of great significance for optimizing the distribution of cultivated land and promoting the sustainable development of land resources.

[Retracted] The Performance Appraisal System of Country Well‐Facilitated Farmland Based on AHP‐Object Metatopological Model

“…"Land remediation," "land improvement," "sustainable use of land resources," "farmland construction," and so on have therefore received a lot of attention from researchers. In most studies of this area, attention has been given to the following aspects: first, research focuses on quality arable land protection and ecological agriculture development [2][3][4][5][6][7]. Among them, the research focuses on environmental protection and economic benefits of land reclamation, cultivation techniques related to agricultural production, variety improvement, and so on [8][9][10][11].…”

Management and Control of Agricultural Production Space in the Yanhe River Basin Based on Peasant Household Behavior

“…The purpose of our study is to elucidate the evolution process of agricultural prod tion space in the Yanhe River Basin under the influence of peasant household beha since 1995, to summarize the mutual influence relationship between the two, and to tablish a corresponding agricultural production space management and control sys based on the figure below (Figure 2). Specifically, with regard to the research on the evolution of agricultural produc space, we selected the total area of cultivated land and its change rate, cultivated l density [24] and the distribution of its center of gravity [25], and cultivated a land p shape index to express the changes in spatial scale, spatial distribution, and spatial sh respectively, and then analyzed the interaction relationship between the two in comb tion with the changes in peasant household behavior. Based on this, we carried ou search on agricultural production space management and control according to the beh ioral characteristics [26] and cultivation preferences [27] of a peasant household.…”

Agricultural Productive Services and Ecological Efficiency of Cultivated Land Use: Evidence from Hunan Province, China

“…The test results show that there are nonlinear effects. The dependent variables of Models (1), ( 2), ( 3), ( 4), ( 5), (6), and ( 7) are agricultural labor input, land input, fertilizer input, pesticide input, plastic sheeting for agricultural use input, agricultural machinery input, and irrigation input (Table 5).…”

“…Its effective utilization holds paramount importance for sustainable agricultural development and food security [1,2]. The global challenge of reconciling population growth with limited cultivated land resources [3][4][5] is particularly acute in China [6]. When harnessing cultivated land for production, the ecological pollution of China's cultivated land ecosystem poses a pressing concern, primarily due to carbon emissions resulting from the use Author Copy • Author Copy • Author Copy • Author Copy • Author Copy • Author Copy • Author Copy • Author Copy • Author Copy of chemical fertilizers, pesticides, and residual films [7].…”