Examining Water Area Changes Accompanying Dam Construction in the Madeira River in the Brazilian Amazon
Two recently constructed run-of-the-river dams (Santo Antônio and Jirau), along the Madeira River in Brazil, have been controversial due to their large unquantified impacts on (1) land use and land cover (LULC) and (2) on the area that would be flooded. Based on annual LULC data from 1985 to 2017, t...
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MDPI AG
2020-07-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/12/7/1921 |
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| author | Dengqiu Li Dengsheng Lu Emilio Moran Ramon Felipe Bicudo da Silva |
| author_facet | Dengqiu Li Dengsheng Lu Emilio Moran Ramon Felipe Bicudo da Silva |
| author_sort | Dengqiu Li |
| collection | DOAJ |
| description | Two recently constructed run-of-the-river dams (Santo Antônio and Jirau), along the Madeira River in Brazil, have been controversial due to their large unquantified impacts on (1) land use and land cover (LULC) and (2) on the area that would be flooded. Based on annual LULC data from 1985 to 2017, this study integrated intensity analysis and difference components methods to analyze the impacts of the two dams on the annual flooded area in upstream, midstream, and downstream regions of the Madeira River. The dam construction significantly influenced LULC change intensity in the upstream and midstream regions since 2011 and 2010, respectively. An increase of 18.5% of the newly flooded area (462.58 km<sup>2</sup>) in the post-dam construction period was observed. The water gross gain intensity was active during 2011–2017 and 2011–2014 in upstream and midstream, respectively. The dominant difference components of water change were exchanged in the pre-dam period and became quantity in the post-dam period for both upstream and midstream regions. Forest was the major land category replaced by water; however, the highest gain intensities occurred in other non-vegetated areas in upstream and midstream. This study provided a useful approach for characterizing impacts of dam construction on water area change. |
| first_indexed | 2024-03-10T18:39:47Z |
| format | Article |
| id | doaj.art-ad2a8320037b4c5eb31d2a0f048d711a |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T18:39:47Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-ad2a8320037b4c5eb31d2a0f048d711a2023-11-20T05:56:40ZengMDPI AGWater2073-44412020-07-01127192110.3390/w12071921Examining Water Area Changes Accompanying Dam Construction in the Madeira River in the Brazilian AmazonDengqiu Li0Dengsheng Lu1Emilio Moran2Ramon Felipe Bicudo da Silva3State Key Laboratory for Subtropical Mountain Ecology of the Ministry of Science and Technology and Fujian Province, Fujian Normal University, Fuzhou 350007, ChinaState Key Laboratory for Subtropical Mountain Ecology of the Ministry of Science and Technology and Fujian Province, Fujian Normal University, Fuzhou 350007, ChinaCenter for Global Change and Earth Observations, Michigan State University, East Lansing, MI 48823, USACenter for Systems Integration and Sustainability, Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48823, USATwo recently constructed run-of-the-river dams (Santo Antônio and Jirau), along the Madeira River in Brazil, have been controversial due to their large unquantified impacts on (1) land use and land cover (LULC) and (2) on the area that would be flooded. Based on annual LULC data from 1985 to 2017, this study integrated intensity analysis and difference components methods to analyze the impacts of the two dams on the annual flooded area in upstream, midstream, and downstream regions of the Madeira River. The dam construction significantly influenced LULC change intensity in the upstream and midstream regions since 2011 and 2010, respectively. An increase of 18.5% of the newly flooded area (462.58 km<sup>2</sup>) in the post-dam construction period was observed. The water gross gain intensity was active during 2011–2017 and 2011–2014 in upstream and midstream, respectively. The dominant difference components of water change were exchanged in the pre-dam period and became quantity in the post-dam period for both upstream and midstream regions. Forest was the major land category replaced by water; however, the highest gain intensities occurred in other non-vegetated areas in upstream and midstream. This study provided a useful approach for characterizing impacts of dam construction on water area change.https://www.mdpi.com/2073-4441/12/7/1921Santo Antônio and Jirau damsintensity analysisdifference componentsland use and land coverwater area change |
| spellingShingle | Dengqiu Li Dengsheng Lu Emilio Moran Ramon Felipe Bicudo da Silva Examining Water Area Changes Accompanying Dam Construction in the Madeira River in the Brazilian Amazon Water Santo Antônio and Jirau dams intensity analysis difference components land use and land cover water area change |
| title | Examining Water Area Changes Accompanying Dam Construction in the Madeira River in the Brazilian Amazon |
| title_full | Examining Water Area Changes Accompanying Dam Construction in the Madeira River in the Brazilian Amazon |
| title_fullStr | Examining Water Area Changes Accompanying Dam Construction in the Madeira River in the Brazilian Amazon |
| title_full_unstemmed | Examining Water Area Changes Accompanying Dam Construction in the Madeira River in the Brazilian Amazon |
| title_short | Examining Water Area Changes Accompanying Dam Construction in the Madeira River in the Brazilian Amazon |
| title_sort | examining water area changes accompanying dam construction in the madeira river in the brazilian amazon |
| topic | Santo Antônio and Jirau dams intensity analysis difference components land use and land cover water area change |
| url | https://www.mdpi.com/2073-4441/12/7/1921 |
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