土地利用动态变化对生态平衡和可持续发展至关重要。研究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进行变化监测与时空分析，以支持其可持续发展。针对该地区农牧交叉带的复杂性，研究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，该地区的农业用地变化、沙漠化生态恢复及地表水体覆盖减少对该地区的土壤水含量影响显著，强调了农业节约用水、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。同时，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了科学依据，助力生态环境与经济发展的协调推进。

Abstract： 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.