半干旱气候绿化带的时空景观格局变化及其对地表温度的影响:伊拉克埃尔比勒市案例研究

IF 2.7 3区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Suzan Ismail, Hamid Maliki
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引用次数: 0

摘要

城市的扩张造成了土地利用和土地覆盖(LULC)的变化,同时也改变了景观结构的空间特征。这些变化产生了热岛和地表温度(LST)的升高,从而引发了各种环境问题,影响了城市地区的可持续发展。绿化带作为一种城市规划遏制政策,可调节城市扩张、保护自然开放空间,并具有适应和缓解功能。绿化带被视为提高城市环境可持续性的有力措施。尽管许多研究已经深入探讨了景观结构变化与 LST 变化之间的关系,但在半干旱气候和绿化带中,这种关系还存在局限性,缺乏将两方面结合起来的综合研究。因此,本研究调查了伊拉克北部半干旱地区埃尔比勒市内绿化带中 LULC 景观格局的时空变化及其与 LST 变化的关系。研究利用遥感数据检索 LST,对 LULC 进行分类,并计算景观指标,以分析研究期间的空间变化。结果表明,LULC 的组成和配置对研究区域 LST 的变化都有影响。皮尔逊相关性表明,植被 1 型(VH)、耕地(CU)和裸土(BS)对 LST 有显著影响,LST 的增加与植被 1 型(VH)的减少、耕地(CU)和裸土(BS)的增加有关,而植被 2 型(VL)和建筑群(BU)均无影响。此外,LULC 的空间分布也对 LST 有显著影响,因为 LST 与 VH、CU 和 BS 的景观指数密切相关。然而,就 BU 而言,只有聚合指数指标会影响 LST,而 VL 指标均与 LST 无关。该研究为景观规划者和政策制定者提供了启示,他们不仅可以在绿化带中开发更多的绿色空间,还可以优化空间景观格局,减少 LST 对城市环境的影响,进一步促进半干旱气候城市的可持续发展,提高城市居民的幸福感。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatiotemporal landscape pattern changes and their effects on land surface temperature in greenbelt with semi-arid climate: A case study of the Erbil City, Iraq

Urban expansion of cities has caused changes in land use and land cover (LULC) in addition to transformations in the spatial characteristics of landscape structure. These alterations have generated heat islands and rise of land surface temperature (LST), which consequently have caused a variety of environmental issues and threated the sustainable development of urban areas. Greenbelts are employed as an urban planning containment policy to regulate urban expansion, safeguard natural open spaces, and serve adaptation and mitigation functions. And they are regarded as a powerful measure for enhancing urban environmental sustainability. Despite the fact that, the relation between landscape structure change and variation of LST has been examined thoroughly in many studies, but there is a limitation concerning this relation in semi-arid climate and in greenbelts as well, with the lacking of comprehensive research combing both aspects. Accordingly, this study investigated the spatiotemporal changes of landscape pattern of LULC and their relationship with variation of LST within an inner greenbelt in the semi-arid Erbil City of northern Iraq. The study utilized remote sensing data to retrieve LST, classified LULC, and calculated landscape metrics for analyzing spatial changes during the study period. The results indicated that both composition and configuration of LULC had an impact on the variation of LST in the study area. The Pearson’s correlation showed the significant effect of Vegetation 1 type (VH), cultivated land (CU), and bare soil (BS) on LST, as increase of LST was related to the decrease of VH and the increases of CU and BS, while, neither Vegetation 2 type (VL) nor built-up (BU) had any effects. Additionally, the spatial distribution of LULC also exhibited significant effects on LST, as LST was strongly correlated with landscape indices for VH, CU, and BS. However, for BU, only aggregation index metric affected LST, while none of VL metrics had a relation. The study provides insights for landscape planners and policymakers to not only develop more green spaces in greenbelt but also optimize the spatial landscape patterns to reduce the influence of LST on the urban environment, and further promote sustainable development and enhance well-being in the cities with semi-arid climate.

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来源期刊
Journal of Arid Land
Journal of Arid Land ENVIRONMENTAL SCIENCES-
CiteScore
4.70
自引率
6.70%
发文量
768
审稿时长
3.2 months
期刊介绍: The Journal of Arid Land is an international peer-reviewed journal co-sponsored by Xinjiang Institute of Ecology and Geography, the Chinese Academy of Sciences and Science Press. It aims to meet the needs of researchers, students and practitioners in sustainable development and eco-environmental management, focusing on the arid and semi-arid lands in Central Asia and the world at large. The Journal covers such topics as the dynamics of natural resources (including water, soil and land, organism and climate), the security and sustainable development of natural resources, and the environment and the ecology in arid and semi-arid lands, especially in Central Asia. Coverage also includes interactions between the atmosphere, hydrosphere, biosphere, and lithosphere, and the relationship between these natural processes and human activities. Also discussed are patterns of geography, ecology and environment; ecological improvement and environmental protection; and regional responses and feedback mechanisms to global change. The Journal of Arid Land also presents reviews, brief communications, trends and book reviews of work on these topics.
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