دورية أكاديمية
Long-term dense Landsat observations reveal detailed waterbody dynamics and temporal changes of the size-abundance relationship
| العنوان: | Long-term dense Landsat observations reveal detailed waterbody dynamics and temporal changes of the size-abundance relationship |
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| المؤلفون: | Shuailong Feng, Shuguang Liu, Guoyi Zhou, Cheng Gao, Dong Sheng, Wende Yan, Yiping Wu, Haiqiang Gao, Jingni Jia, Zhao Wang, Ying Ning, Dandan Ren, Maochou Liu |
| المصدر: | Journal of Hydrology: Regional Studies, Vol 41, Iss , Pp 101111- (2022) |
| بيانات النشر: | Elsevier, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Physical geography LCC:Geology |
| مصطلحات موضوعية: | Water body detection, Dynamics, Size-abundance, Spatiotemporal variability, Physical geography, GB3-5030, Geology, QE1-996.5 |
| الوصف: | Study region: Surface water bodies in Hunan Province, China. Study focus:: Surface water bodies (WB) are important for agriculture, aquiculture, and aquatic and terrestrial ecosystems, yet monitoring and understanding the spatiotemporal dynamics of water bodies over large areas remain a major challenge. This study used all the available Landsat images and the Google Earth Engine (GEE) to map and analyze annual changes of all water bodies (>0.001 km2) in Hunan Province, China, from 1987 to 2020. New hydrological insights for the region:: A total of 76,928 WBs were detected with a total area of 4181.14 km2 (both were averages during the study period) with an interannual variability of − 117 and − 20.05 km2 year-1, respectively. Surface areas of small (0.001–1 km2), medium (1–50 km2), and large (>50 km2) WBs changed at various rates and directions. The size-abundance relationship of WBs followed the power scaling law with a positive trend in the scaling exponent, implying the fraction of small WB number has decreased over the past three decades. The temporal change of the size-abundance relationship, reflects the strong and dynamic imprints of both human activities and regional climate change. Future research should strive to understand the temporal change of the size-abundance relationship of WBs as it is important for water resources management and estimating the temporal changes of greenhouse gas fluxes from WBs over large areas. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2214-5818 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2214581822001240; https://doaj.org/toc/2214-5818 |
| DOI: | 10.1016/j.ejrh.2022.101111 |
| URL الوصول: | https://doaj.org/article/52086da781dc445abd68f3e16c034562 |
| رقم الأكسشن: | edsdoj.52086da781dc445abd68f3e16c034562 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 22145818 |
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| DOI: | 10.1016/j.ejrh.2022.101111 |