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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doaj-d0b3bca218a249f8aec7e72ea21e13322021-03-08T00:01:14ZengMDPI AGInternational Journal of Environmental Research and Public Health1661-78271660-46012021-03-01182682268210.3390/ijerph18052682Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan PlateauYihao Zhang0Jianzhong Yan1Xian Cheng2Xinjun He3College of Resources and Environment, Southwest University, Chongqing 400715, ChinaCollege of Resources and Environment, Southwest University, Chongqing 400715, ChinaCollege of Resources and Environment, Southwest University, Chongqing 400715, ChinaCollege of Resources and Environment, Southwest University, Chongqing 400715, ChinaWetland 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.https://www.mdpi.com/1660-4601/18/5/2682wetland changesclimate changethe Pumqu River BasinTibetan Plateaureclamation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yihao Zhang Jianzhong Yan Xian Cheng Xinjun He |
spellingShingle |
Yihao Zhang Jianzhong Yan Xian Cheng Xinjun He Wetland Changes and Their Relation to Climate Change in the Pumqu Basin, Tibetan Plateau International Journal of Environmental Research and Public Health wetland changes climate change the Pumqu River Basin Tibetan Plateau reclamation |
author_facet |
Yihao Zhang Jianzhong Yan Xian Cheng Xinjun He |
author_sort |
Yihao Zhang |
title |
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_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_sort |
wetland changes and their relation to climate change in the pumqu basin, tibetan plateau |
publisher |
MDPI AG |
series |
International Journal of Environmental Research and Public Health |
issn |
1661-7827 1660-4601 |
publishDate |
2021-03-01 |
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. |
topic |
wetland changes climate change the Pumqu River Basin Tibetan Plateau reclamation |
url |
https://www.mdpi.com/1660-4601/18/5/2682 |
work_keys_str_mv |
AT yihaozhang wetlandchangesandtheirrelationtoclimatechangeinthepumqubasintibetanplateau AT jianzhongyan wetlandchangesandtheirrelationtoclimatechangeinthepumqubasintibetanplateau AT xiancheng wetlandchangesandtheirrelationtoclimatechangeinthepumqubasintibetanplateau AT xinjunhe wetlandchangesandtheirrelationtoclimatechangeinthepumqubasintibetanplateau |
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