Next Article in Journal
Effects of Algae on the Formation of Black Blooms and Bacterial Community Structure Changes in Sediments and Black Floats
Next Article in Special Issue
High Precision Extraction of Surface Water from Complex Terrain in Bosten Lake Basin Based on Water Index and Slope Mask Data
Previous Article in Journal
Biowaste Valorization Using Hydrothermal Carbonization for Potential Wastewater Treatment Applications
Previous Article in Special Issue
The Feasibility of Monitoring Great Plains Playa Inundation with the Sentinel 2A/B Satellites for Ecological and Hydrological Applications
 
 
Article

Modeling the Effects of Climate Change and Land Use/Land Cover Change on Sediment Yield in a Large Reservoir Basin in the East Asian Monsoonal Region

1
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
2
Hangzhou Bureau of Ecology and Environment Chun’an Branch, Hangzhou 311700, China
3
School of Tourism and Urban & Rural Planning, Zhejiang Gongshang University, Hangzhou 310018, China
4
Yangtze Institute for Conservation and Development, Nanjing Hydraulic Research Institute, Nanjing 210098, China
5
Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environ-Mental Science, Yunnan University, Kunming 650504, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Fei Zhang, Ngai Weng Chan, Xinguo LI and Xiaoping Wang
Water 2022, 14(15), 2346; https://doi.org/10.3390/w14152346
Received: 30 May 2022 / Revised: 8 July 2022 / Accepted: 25 July 2022 / Published: 29 July 2022
This research addresses the separate and combined impacts of changes in climate and land use/land cover on the hydrological processes and sediment yield in the Xin’anjiang Reservoir Basin (XRB) in the southeast of China by using the soil and water assessment tool (SWAT) hydrological model in combination with the downscaled general circulation model (GCM) projection outputs. The SWAT model was run under a variety of prescribed scenarios including three climate changes, two land use changes, and three combined changes for the future period (2068–2100). The uncertainty and attribution of the sediment yield variations to the climate and land use/land cover changes at the monthly and annual scale were analyzed. The responses of the sediment yield to changes in climate and land use/land cover were considered. The results showed that all scenarios of climate changes, land use/land cover alterations, and combined changes projected an increase in sediment yield in the basin. Under three representative concentration pathways (RCP), climate change significantly increased the annual sediment yield (by 41.03–54.88%), and deforestation may also increase the annual sediment yield (by 1.1–1.2%) in the future. The comprehensive influence of changes in climate and land use/land cover on sediment yield was 97.33–98.05% (attributed to climate change) and 1.95–2.67% (attributed to land use/land cover change) at the annual scale, respectively. This means that during the 2068–2100 period, climate change will exert a much larger influence on the sediment yield than land use/land cover alteration in XRB if the future land use/land cover remains unchanged after 2015. Moreover, climate change impacts alone on the spatial distribution of sediment yield alterations are projected consistently with those of changes in the precipitation and water yield. At the intra-annual scale, the mean monthly transported sediment exhibits a significant increase in March–May, but a slight decrease in June–August in the future. Therefore, the adaptation to climate change and land use/land cover change should be considered when planning and managing water environmental resources of the reservoirs and catchments. View Full-Text
Keywords: climate change; land use/land cover change; sediment response; multiple scenarios; modeling climate change; land use/land cover change; sediment response; multiple scenarios; modeling
Show Figures

Figure 1

MDPI and ACS Style

Li, H.; Yu, C.; Qin, B.; Li, Y.; Jin, J.; Luo, L.; Wu, Z.; Shi, K.; Zhu, G. Modeling the Effects of Climate Change and Land Use/Land Cover Change on Sediment Yield in a Large Reservoir Basin in the East Asian Monsoonal Region. Water 2022, 14, 2346. https://doi.org/10.3390/w14152346

AMA Style

Li H, Yu C, Qin B, Li Y, Jin J, Luo L, Wu Z, Shi K, Zhu G. Modeling the Effects of Climate Change and Land Use/Land Cover Change on Sediment Yield in a Large Reservoir Basin in the East Asian Monsoonal Region. Water. 2022; 14(15):2346. https://doi.org/10.3390/w14152346

Chicago/Turabian Style

Li, Huiyun, Chuanguan Yu, Boqiang Qin, Yuan Li, Junliang Jin, Liancong Luo, Zhixu Wu, Kun Shi, and Guangwei Zhu. 2022. "Modeling the Effects of Climate Change and Land Use/Land Cover Change on Sediment Yield in a Large Reservoir Basin in the East Asian Monsoonal Region" Water 14, no. 15: 2346. https://doi.org/10.3390/w14152346

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop