地球科学进展 ›› 2025, Vol. 40 ›› Issue (12): 1297 -1306. doi: 10.11867/j.issn.1001-8166.2025.089

土地利用与景观演化 上一篇    下一篇

40年奈曼旗土地利用动态变化与时空分析
徐勇1(), 胡迪2, 洪亮3()   
  1. 1.广州大学 地理科学与遥感学院,广东 广州 510006
    2.南京师范大学 地理科学学院,江苏 南京 210024
    3.云南师范大学 地理学部,云南 昆明 650050
  • 收稿日期:2025-07-09 修回日期:2025-11-24 出版日期:2025-12-10
  • 通讯作者: 洪亮 E-mail:xu1129@gzhu.edu.cn;hongliang20433@hotmail.com
  • 基金资助:
    国家自然科学基金重点项目(42430515)

Spatial-Temporal Analysis of Land Use/Cover Change in Naiman Banner over the Past 40 Years

Yong XU1(), Di HU2, Liang HONG3()   

  1. 1.School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China
    2.School of Geography, Nanjing Normal University, Nanjing 210024, China
    3.Faculty of Geography, Yunnan Normal University, Kunming 650050, China
  • Received:2025-07-09 Revised:2025-11-24 Online:2025-12-10 Published:2026-01-17
  • Contact: Liang HONG E-mail:xu1129@gzhu.edu.cn;hongliang20433@hotmail.com
  • About author:XU Yong, research areas include big geospatial data analysis and urban sustainability. E-mail: xu1129@gzhu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(42430515)

土地利用动态变化对生态平衡和可持续发展至关重要。以内蒙古通辽市奈曼旗为例,利用时序遥感数据对其土地资源利用变化进行监测与时空分析,以支持其可持续发展。针对该地区农牧交错带的复杂性,深入挖掘时序卫星影像的季节特征,生成高精度土地利用产品。基于所得结果,分析奈曼旗地区过去40年的土地利用时空变化规律,并评估不同土地利用变化的生态影响。结果显示,奈曼旗的土地利用呈现显著的时空变化特征:北部地区面临沙漠化生态恢复、城市扩展与农用地增加并存的趋势,而南部山区则出现了一定程度的退耕还林现象。因子贡献度分析表明,农业用地变化、沙漠化生态恢复及地表水体覆盖减少对奈曼旗地区的土壤含水量影响显著,凸显了农业节约用水、沙地生态修复和水资源保护对农牧业可持续发展的重要性。研究结果可为奈曼旗地区的土地资源管理提供重要的数据支持,并为该地区的可持续发展策略提供科学依据,助力生态环境与经济发展的协调推进。

Dynamic changes in land use are vital for ecological balance and sustainable development. Based on the case of Naiman Banner in Tongliao City, Inner Mongolia, time-series remote sensing data were examined to monitor changes in land use and conduct spatiotemporal analysis to support the sustainable development of this region. Given the complexities of this agro-pastoral region, the seasonal characteristics of time-series satellite imagery were utilized to produce high-precision land use products. Based on which, this study analyzes the spatiotemporal changes in land use in Naiman Banner over the past 40 years and assesses the ecological impacts of various land use changes. The results indicate differentiated spatiotemporal characteristics in land use, with the northern region exhibiting trends of desertification recovery, urban expansion, and an increase in arable land, while the southern mountainous areas show a trend of returning farmland to grass and forest. Factor contribution analysis reveals that changes in agricultural land use, ecological recovery from desertification, and deceased surface water significantly affect soil moisture content in the area, underscoring the importance of water-saving agriculture, ecological restoration of sandy areas, and water resource protection for sustainable agricultural development. This study provides important data for land resource management in Naiman Banner and offers scientific evidence for sustainable development strategies in this region, facilitating the coordinated advancement of ecological environments and economic development.

中图分类号: 

图1 奈曼旗土地利用类型
Fig. 1 Land use types in Naiman Banner
图2 奈曼旗地区实例图片
第一行为现场照片,第二行为遥感影像。
Fig. 2 On-site field picture of Naiman Banner
The first row representing site photos, the second row representing satellite images.
表1 奈曼旗试验区训练及验证样本数据
Table 1 Training and validation areas for the study area of Naiman Banner
图3 土地利用分类流程
Fig. 3 Procedure of land use classification
图4 奈曼旗地区的土地利用
Fig. 4 Land use maps of Naiman Banner
表2 以总体精度和Kappa系数评价奈曼旗地区2022年土地利用数据精度
Table 2 Accuracy assessment for the 2022 land use map of Naiman Banner using Overall AccuracyOAand Kappa coefficient
表3 过去40年奈曼旗地区各类土地利用变化
Table 3 Changes in different land cover types in Naiman Banner over the past 40 years
表4 基于不同时序影像组合结果的精度评价
Table 4 Accuracy assessment for the results based on different image combination strategies
表5 奈曼旗地区南北部土地利用变化特征
Table 5 Land use change characteristics in the northern and southern parts of Naiman Banner
表6 奈曼旗地区19852000年土地利用变化 (km2)
Table 6 Land use change in Naiman Banner from year 1985 to 2000
表7 奈曼旗地区20002022年土地利用变化 (km2)
Table 7 Land use change in Naiman Banner from year 2000 to 2022
图5 过去40年奈曼旗地区土地利用变化对土壤含水量的影响
(a)土地利用变化(1985—2022年);(b)土壤含水量变化(1985—2022年)。
Fig. 5 Impact of land use change on soil moisture content in Naiman Banner over the past 40 years
(a) Land use change from year 1985 to 2022; (b) Soil moisture change from year 1985 to 2022.
图6 奈曼旗地区不同土地利用变化对土壤含水量的影响
Fig. 6 Impact of different land use changes on soil moisture content in Naiman Banner
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