近40 a吐哈地区绿洲时空变化特征及影响因素研究

doi:10.12118/j.issn.1000-6060.2025.152

Abstract

Abstract:

As a strategic hub along the Silk Road Economic Belt, the Turpan-Hami region plays a vital role in maintaining ecological balance and supporting economic development through its evolving oasis systems. This study examines the spatiotemporal characteristics of oasis variations and their driving factors in the Turpan-Hami region, using land use datasets, socioeconomic indicators, and ArcGIS-based oasis delineation techniques. The main findings are as follows: (1) Over four decades, total oasis expansion reached 1651.47 km², with phased development patterns: Moderate growth of 222.50 km² during 1980—2000, expansion of 440.71 km² with marked fluctuations during 2000—2010, followed by accelerated stabilization at 988.26 km² during 2010—2020. (2) Spatially, the most significant transformations occurred in Aiding Lake Township of Gaochang District and the Alagou River Basin in Turpan City, while in Hami City expansion concentrated on the urban fringe of Yizhou District and the Tianshan Mountain-fed agricultural oases in Barkol Kazakh Autonomous County. (3) The oasis centroid shifted notably, gradually migrating from Shanshan County of Turpan to Yizhou District of Hami, with distinct spatial heterogeneity in trajectory patterns across subregions. (4) Snow water equivalent and socioeconomic factors jointly influenced oasis dynamics, with snow water equivalent identified as the dominant driver. Oasis evolution in Hami showed stronger correlations with socioeconomic indicators (e.g., GDP), whereas in Turpan natural determinants, including snow water equivalent and total water availability, played the primary role. These findings provide an empirical basis for developing sustainable strategies and optimizing water resource governance in this ecologically fragile region.

Key words: oasis, spatio-temporal variation, shift of center of gravity, geographic detectors, Turpan-Hami region

ZHOU Ziyu, DANG Ruoyuan, YANG Shuyu, WANG Lei, XU Jiliang, LI Jingwen, AN Lizhe. Spatio-temporal variation and influencing factors of Turpan-Hami region oasis in the past 40 years[J].Arid Land Geography, 2025, 48(10): 1695-1706.

Figures/Tables 11

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土地覆盖类型	土地利用类型
绿洲	旱地、有林地、灌木林、疏林地、其他林地、高覆盖草地、中覆盖草地、河渠、湖泊、水库坑塘、滩地、居民用地、农村居民点、其他建设用地
荒漠-绿洲过渡带	低覆盖草地（覆盖度在5%~20%的天然草地）、滩涂、永久性冰川雪地
荒漠	戈壁、盐碱地、沼泽地、裸土地、裸岩石质地和其他

绿洲变化	1980—1990年	1990—2000年	2000—2010年	2010—2020年
绿洲年均退缩度（ADR）/%	0.00003	0.00189	0.02743	-0.00157
绿洲年均扩张度（AOR）/%	0.00092	0.00228	0.02995	0.00393
绿洲变化状态	ADR<AOR^*	ADR<AOR^*	ADR<AOR^*	ADR<AOR^*

年份	哈密市			吐鲁番市
年份	巴里坤哈萨克自治县	伊吾县	伊州区	托克逊县	鄯善县	高昌区
1980—1990	0.800	1.052	1.107	0.474	0.001	5.354
1990—2000	6.386	5.167	4.595	0.238	2.439	0.316
2000—2010	15.563	35.984	8.931	14.546	25.987	6.906
2010—2020	4.870	3.611	8.931	1.334	14.850	5.644

Spatio-temporal variation and influencing factors of Turpan-Hami region oasis in the past 40 years

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