Using county-level panel data for Jiangsu Province from 2008 to 2018, this study adopted a fixed effect model to analyze the impact of land consolidation on crop planting structure, also considering the moderating effect of distance from the city center and the heterogeneous effect of various types of land consolidation. The results revealed that farmland consolidation and land reclamation had a negative impact on the proportion of grain crops (rice, wheat, and corn) cultivated, which declined by 0.0051 % (0.0069 %), 0.0055 % (0.0124 %), and 0.0101 % (0.0123 %) for every 1 % increase in investment, construction area, and newly added arable land from farmland consolidation (land reclamation), respectively, demonstrating that land consolidation has not prevented, or even encouraged nongrain production expansion. The production conditions of reclaimed arable land and land transfer practices following consolidation may be factors affecting these declines. Notably, the negative effect of land consolidation on crop planting structure weakens when the land is further away from the city center. To ensure food security, priority should be given to follow-up management after land consolidation and rational oversight and guidance following land transfer.
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http://dx.doi.org/10.1016/j.heliyon.2024.e33728 | DOI Listing |
J Environ Manage
January 2025
School of Land Science and Technology, China University of Geosciences, 29 Xueyuan Road, Haidian District, 100083, Beijing, People's Republic of China.
Limiting adverse consequences of mining activities requires ecosystem restoration efforts, whose arrangement around mining areas is poorly designed. It is unclear, however, where best to locate ecological projects to enhance ecosystem services cost-effectively. To answer this question, we conducted an optimized ecological restoration project planning by the Resource Investment Optimization System (RIOS) model to identify the restoration priority areas in the Pingshuo Opencast Coal Mine region in Shanxi Province.
View Article and Find Full Text PDFJ Environ Manage
January 2025
College of Management of Sichuan Agricultural University, Chengdu, 611130, China; Sichuan Key Laboratory of Philosophy and Social Science, National Key Laboratory of Food Security and Tianfu Granary, Sichuan Agricultural University, Chengdu, 611130, China. Electronic address:
Changing land use is one of the main factors influencing global climate change and the imbalance in the carbon cycle. Consequently, the focus of international organizations and the academic community is on strategies to mitigate carbon emissions or improve carbon sequestration by optimizing land use structure and function. Since 2019, China's Zhejiang Province has implemented a township-level pilot policy, exploring a comprehensive land consolidation (CLC for short) pilot policy that includes all elements of "mountains, rivers, forests, farmlands, lakes, and grasslands.
View Article and Find Full Text PDFJ Environ Manage
December 2024
School of Land Engineering, Chang'an University, Xi'an, China.
Under the influence of climate warming, overgrazing may exacerbate ecosystem degradation. To determine the safe grazing boundaries and potential degradation areas in different regions. The study used the Generalize Linear Model (GLM) to assess the combined effects of drought and grazing on the ecosystem services of the Tibetan Plateau (TP), and identified safe grazing boundaries and overgrazing areas.
View Article and Find Full Text PDFSci Rep
December 2024
College of Geography and Environment Science, Northwest Normal University, 967 Anning East Road, Lanzhou, 730070, Gansu, China.
Planting structure adjustment (PSA) affects agricultural water saving, and is an essential part of water-saving agricultural construction. This study introduced virtual water theory and innovatively constructed a model to assess the water-saving effects of PSA in Shiyang River Basin over the past 38 years, explore the relationship between planting structure and water saving, and clarify the most water-saving planting structure. The results showed that the sown area of economic crops consistently increased as food crop areas decreased in the four counties (districts) from 1980 to 2017.
View Article and Find Full Text PDFEnviron Monit Assess
December 2024
State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, Beijing, 100093, China.
Methane (CH) processes and fluxes have been widely investigated in low-latitude tropical wetlands and high-latitude boreal peatlands. In the mid-latitude Mongolia Plateau, however, CH processes and fluxes have been less studied, particularly in riverine wetlands. In this study, in situ experiments were conducted in the riverine sandy wetlands of the Mongolia Plateau to gain a better understanding of CH emissions and their influencing mechanisms.
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