干旱区生态环境知识资源中心(Arid): Spatial-Temporal and Driving Factors of Land Use/Cover Change in Mongolia from 1990 to 2021

Arid

DOI	10.3390/rs15071813
	Spatial-Temporal and Driving Factors of Land Use/Cover Change in Mongolia from 1990 to 2021
	Hao, Junming; Lin, Qingrun; Wu, Tonghua; Chen, Jie; Li, Wangping; Wu, Xiaodong; Hu, Guojie; La, Yune
通讯作者	Wu, TH
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2023
卷号	15 期号:7
英文摘要	During the past several decades, desertification and land degradation have become more and more serious in Mongolia. The drivers of land use/cover change (LUCC), such as population dynamics and climate change, are increasingly important to local sustainability studies. They can only be properly analyzed at small scales that capture the socio-economic conditions. Several studies have been carried out to examine the pattern of LUCC in Mongolia, but they have been focused on changes in single land types at a local scale. Although some of them were carried out at the national scale, the data interval is more than 10 years. A small-scale and year-by-year dataset of LUCC in Mongolia is thus needed for comprehensive analyses. We obtained year-by-year land use/cover changes in Mongolia from 1990 to 2021 using Landsat TM/OLI data. First, we established a random forest (RF) model. Then, in order to improve the classification accuracy of the misclassification of cropland, grassland, and built and barren areas, the classification and regression trees model (CART) was introduced for post-processing. The results show that 17.6% of the land surface has changed at least once among the six land categories from 1990 to 2021. While the area of barren land has significantly increased, the grassland and forest areas have exhibited a decreasing trend in the past 32 years. The other land types do not show promising changes. To determine the driving factors of LUCC, we applied an RF feature importance ranking to environmental factors, physical factors, socioeconomic factors, and accessibility factors. The mean annual precipitation (MAP), evapotranspiration (ET), mean annual air temperature (MAAT), DEM, GDP, and distance to railway are the main driving factors that have determined the distribution and changes in land types. Interestingly, unlike the global anti-V-shaped pattern, we found that the land use/cover changes show an N-shaped trend in Mongolia. These characteristics of land use/cover change in Mongolia are primarily due to the agricultural policies and rapid urbanization. The results present comprehensive land use/cover change information for Mongolia, and they are of great significance for policy-makers to formulate a scientific sustainable development strategy and to alleviate the desertification of Mongolia.
英文关键词	land use/cover Google Earth engine random forest model Mongolia
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000970200600001
WOS关键词	RANDOM FOREST ; OPEN ACCESS ; PRECIPITATION ; TEMPERATURE ; VEGETATION ; VARIABILITY ; IMPACTS ; MODELS ; STEPPE
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398256
推荐引用方式 GB/T 7714	Hao, Junming,Lin, Qingrun,Wu, Tonghua,et al. Spatial-Temporal and Driving Factors of Land Use/Cover Change in Mongolia from 1990 to 2021[J],2023,15(7).
APA	Hao, Junming.,Lin, Qingrun.,Wu, Tonghua.,Chen, Jie.,Li, Wangping.,...&La, Yune.(2023).Spatial-Temporal and Driving Factors of Land Use/Cover Change in Mongolia from 1990 to 2021.REMOTE SENSING,15(7).
MLA	Hao, Junming,et al."Spatial-Temporal and Driving Factors of Land Use/Cover Change in Mongolia from 1990 to 2021".REMOTE SENSING 15.7(2023).