Evolution and Transformation Analysis of Land-use in Mountainous “Granary”—Evidence from Typical Basin in Karst Mountainous Areas of Southwest China

IF 3.2 2区环境科学与生态学 Q2 ENVIRONMENTAL STUDIES

Land Pub Date : 2023-12-19 DOI:10.3390/land13010004

Mei Chen, Yangbing Li, Yiyi Zhang, Limin Yu, Linyu Yang

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Abstract

Intermountain basins are the granaries of the karst mountains of southwest China. Revealing the process and trend of land-use transformation in typical mountainous “granaries” is of great significance to optimizing land-use, food security, and rural revitalization in the karst mountains of southwest China. Lianjiang basin in Huishui County is the largest in Guizhou Province of southwest China, and a typical mountainous “granary” is used as a case study area. Based on seven periods of high-definition remote sensing images from 1966 to 2020 and on-the-spot investigation, we adopt the analysis methods of landscape pattern, moving window, and buffer zone and conduct an in-depth study on the spatial evolution of land-use and the land-use transformation law of the typical “granaries” of karst mountainous areas in southwest China from the perspectives of changes in the quantity of land-use, changes in the types of land-use, and changes in the landscape pattern. The results showed that the transformation of land-use in the basin was mainly manifested in the transformation of the function of cultivated land and the diversification of the function of cultivated land. The landscape pattern of the basin was gradually transformed from traditional rural landscape to modern agricultural landscape. The gradient effect of land-use evolution and transformation in the study basin was obvious. Traffic, location, and land resources significantly affect land-use transformation in the basin. Based on the above analysis, this paper proposes that the “granary” basins in karst mountainous areas should optimize the land-use of the basin by the trade-off between regional socio-economic development, ecological protection, and food security. The results of this paper provide a reference for land-use optimization and rural development in the granary-type basins and other similar areas in the karst mountains of southwest China.

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山地 "粮仓 "土地利用的演变与转型分析--来自中国西南喀斯特山区典型盆地的证据

山间盆地是中国西南岩溶山区的粮仓。揭示典型山地 "粮仓 "土地利用转型的过程和趋势，对优化西南岩溶山区土地利用、粮食安全和乡村振兴具有重要意义。惠水县连江盆地是中国西南地区最大的盆地，也是典型的山区 "粮仓"。基于 1966-2020 年七期高清遥感影像和现场调查，采用景观格局、移动窗口、缓冲带等分析方法，从土地利用数量变化、土地利用类型变化、景观格局变化等角度，深入研究了西南岩溶山区典型 "粮仓 "的土地利用空间演变和土地利用转型规律。结果表明，盆地土地利用方式的转变主要表现为耕地功能的转变和耕地功能的多样化。流域景观格局逐渐由传统的乡村景观向现代农业景观转变。流域土地利用演变与转型的梯度效应明显。交通、区位、土地资源等因素对流域土地利用转型有重要影响。基于以上分析，本文提出喀斯特山区 "粮仓 "盆地应在区域社会经济发展、生态保护和粮食安全之间进行权衡，优化盆地土地利用。本文的研究结果为西南岩溶山区 "粮仓型 "盆地及其他类似地区的土地利用优化和农村发展提供了参考。

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来源期刊

Land ENVIRONMENTAL STUDIES-Nature and Landscape Conservation

CiteScore

4.90

自引率

23.10%

发文量

1927

期刊介绍： Land is an international and cross-disciplinary, peer-reviewed, open access journal of land system science, landscape, soil–sediment–water systems, urban study, land–climate interactions, water–energy–land–food (WELF) nexus, biodiversity research and health nexus, land modelling and data processing, ecosystem services, and multifunctionality and sustainability etc., published monthly online by MDPI. The International Association for Landscape Ecology (IALE), European Land-use Institute (ELI), and Landscape Institute (LI) are affiliated with Land, and their members receive a discount on the article processing charge.