Response of forest belt on the south slope of Tianshan Mountains in China to global warming during 1990–2020

IF 1.8 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Frontiers of Earth Science Pub Date : 2024-07-23 DOI:10.1007/s11707-024-1105-2

Liyuan Zheng, Yong Zhang, Chao Lu, Wensheng Zhang, Bo Tan, Lai Jiang, Yanzhen Zhang, Chengbang An

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Abstract

Mountain vegetation is highly sensitive to changes in climate. Currently, there is no consensus regarding the direction and magnitude of the spatial migration of mountain vegetation in response to climate change. Past studies have reported that climate change promotes upward or downward movement of plant species along an altitude gradient. Based on meteorological data and remote sensing images, this study analyzed the spatial distribution and dynamic trend of mountain altitudinal vegetation belts on the southern slope of the Tianshan Mountains over the past 30 years and discussed the climatic driving factors of these changes. The results showed that the forest belt in this area is unusual because it is embedded in the grassland belt in a patch-like manner and shows discontinuous changes or replacements along the vertical gradient. With the coexistence of warm humidification and warm drying on the southern slope of the Tianshan Mountains, the response of the upper and lower altitudes of the forest belt to climate change was similar, showing a trend of migration to higher-altitude areas. The main climatic factors affecting the migration of the upper and lower altitudes varied spatially. In general, the upper limit of the forest belt had a higher association with precipitation during the vegetative growth season, while the contribution of temperature-related factors to the lower limit of the forest belt was greater.

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1990-2020 年中国天山南坡林带对全球变暖的响应

山区植被对气候变化高度敏感。目前，关于山区植被因气候变化而发生的空间迁移的方向和幅度还没有达成共识。过去的研究报告指出，气候变化会促进植物物种沿海拔梯度向上或向下迁移。本研究基于气象数据和遥感影像，分析了天山南坡近30年来山地海拔植被带的空间分布和动态变化趋势，并探讨了这些变化的气候驱动因素。结果表明，该地区的林带不同寻常，它呈斑块状嵌入草原带中，并沿垂直梯度呈不连续的变化或更替。在天山南坡暖湿化与暖干化并存的情况下，林带上下海拔对气候变化的响应相似，呈现向高海拔地区迁移的趋势。影响上下海拔迁移的主要气候因素在空间上存在差异。一般来说，在植被生长季节，林带上限与降水的关系更大，而温度相关因素对林带下限的影响更大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers of Earth Science GEOSCIENCES, MULTIDISCIPLINARY-

CiteScore

3.50

自引率

5.00%

发文量

627

期刊介绍： Frontiers of Earth Science publishes original, peer-reviewed, theoretical and experimental frontier research papers as well as significant review articles of more general interest to earth scientists. The journal features articles dealing with observations, patterns, processes, and modeling of both innerspheres (including deep crust, mantle, and core) and outerspheres (including atmosphere, hydrosphere, and biosphere) of the earth. Its aim is to promote communication and share knowledge among the international earth science communities