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Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau

Wetland ecosystems play one of the most crucial roles in the world. Wetlands have the functions of ecological water storage, water supply, and climate regulation, which plays an indispensable role in global environmental security. The Pumqu River Basin (PRB) is located in an area with extremely vuln...

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Autores principales: Zhang, Yihao, Yan, Jianzhong, Cheng, Xian, He, Xinjun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7967415/
https://www.ncbi.nlm.nih.gov/pubmed/33799984
http://dx.doi.org/10.3390/ijerph18052682
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author Zhang, Yihao
Yan, Jianzhong
Cheng, Xian
He, Xinjun
author_facet Zhang, Yihao
Yan, Jianzhong
Cheng, Xian
He, Xinjun
author_sort Zhang, Yihao
collection PubMed
description Wetland ecosystems play one of the most crucial roles in the world. Wetlands have the functions of ecological water storage, water supply, and climate regulation, which plays an indispensable role in global environmental security. The Pumqu River Basin (PRB) is located in an area with extremely vulnerable ecological environment, where climate change is obvious. Understanding wetland distribution, changes and causes in the PRB are of great importance to the rational management and protection of wetlands. Using the Landsat series satellite images, wetlands of this area in 2000, 2010, and 2018 were extracted. The results showed that (1) there were obvious regional differences in wetland types and their distribution patterns in the basin. Wetlands were mainly distributed in areas with slopes less than 12° and at elevations between 4000 m and 5500 m. (2) During the past 20 years, the wetland area in the basin decreased, and the changing trend of wetlands was different. Palustrine wetlands decreased tremendously, riverine and lacustrine wetlands first decreased and then increased, while floodplain wetlands first increased and then decreased. Palustrine wetlands were reclaimed to cultivated land, but the proportion of reclamation is small. (3) Climate dominated wetland changes in the PRB. The changes in riverine and lacustrine wetlands were mainly affected by the warm-season average temperature, the change in palustrine wetlands was mainly related to the annual precipitation and the warm-season average temperature, and the change in floodplain wetlands was related to the warm-season precipitation. To achieve sustainable development, the government plays a guiding role and actively formulates and implements wetland protection policies, such as restricting or prohibiting grazing on wetlands, which play an important role in wetland protection and restoration.
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spelling pubmed-79674152021-03-18 Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau Zhang, Yihao Yan, Jianzhong Cheng, Xian He, Xinjun Int J Environ Res Public Health Article Wetland ecosystems play one of the most crucial roles in the world. Wetlands have the functions of ecological water storage, water supply, and climate regulation, which plays an indispensable role in global environmental security. The Pumqu River Basin (PRB) is located in an area with extremely vulnerable ecological environment, where climate change is obvious. Understanding wetland distribution, changes and causes in the PRB are of great importance to the rational management and protection of wetlands. Using the Landsat series satellite images, wetlands of this area in 2000, 2010, and 2018 were extracted. The results showed that (1) there were obvious regional differences in wetland types and their distribution patterns in the basin. Wetlands were mainly distributed in areas with slopes less than 12° and at elevations between 4000 m and 5500 m. (2) During the past 20 years, the wetland area in the basin decreased, and the changing trend of wetlands was different. Palustrine wetlands decreased tremendously, riverine and lacustrine wetlands first decreased and then increased, while floodplain wetlands first increased and then decreased. Palustrine wetlands were reclaimed to cultivated land, but the proportion of reclamation is small. (3) Climate dominated wetland changes in the PRB. The changes in riverine and lacustrine wetlands were mainly affected by the warm-season average temperature, the change in palustrine wetlands was mainly related to the annual precipitation and the warm-season average temperature, and the change in floodplain wetlands was related to the warm-season precipitation. To achieve sustainable development, the government plays a guiding role and actively formulates and implements wetland protection policies, such as restricting or prohibiting grazing on wetlands, which play an important role in wetland protection and restoration. MDPI 2021-03-07 /pmc/articles/PMC7967415/ /pubmed/33799984 http://dx.doi.org/10.3390/ijerph18052682 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Yihao
Yan, Jianzhong
Cheng, Xian
He, Xinjun
Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau
title Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau
title_full Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau
title_fullStr Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau
title_full_unstemmed Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau
title_short Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau
title_sort wetland changes and their relation to climate change in the pumqu basin, tibetan plateau
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7967415/
https://www.ncbi.nlm.nih.gov/pubmed/33799984
http://dx.doi.org/10.3390/ijerph18052682
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