Effect of LULC Changes on Annual Water Yield in the Urban Section of the Chili River, Arequipa, Using the InVEST Model
Arequipa is a semi-desert city located in southern Peru which depends on the Chili River as its only water source. During recent years, this city has increased its number of inhabitants significantly as a result of internal migratory flows and population growth. Because of this, the city has undergo...
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| Format: | Article |
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MDPI AG
2024-02-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/16/5/664 |
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| author | Lorenzo Carrasco-Valencia Karla Vilca-Campana Carla Iruri-Ramos Berly Cárdenas-Pillco Alfredo Ollero Andrea Chanove-Manrique |
| author_facet | Lorenzo Carrasco-Valencia Karla Vilca-Campana Carla Iruri-Ramos Berly Cárdenas-Pillco Alfredo Ollero Andrea Chanove-Manrique |
| author_sort | Lorenzo Carrasco-Valencia |
| collection | DOAJ |
| description | Arequipa is a semi-desert city located in southern Peru which depends on the Chili River as its only water source. During recent years, this city has increased its number of inhabitants significantly as a result of internal migratory flows and population growth. Because of this, the city has undergone a rapid urbanization process which has increased the urban areas near the river and caused the destruction of agricultural areas, as well as their native vegetation. This change in land use can be quantified through satellite image analysis across many years, but as noted, there are no studies on its impact on water yield (WY) in the urban section of the river. Now, by using the Integrated Valuation of Ecosystem Services and Compensation (InVEST) model, which allows the WY of the study area to be evaluated in millimeters and cubic meters by introducing a series of variables, such as precipitation, reference evapotranspiration and types of land use classes, among others, it is possible to determine that the WY from the study area was 1,743,414 m<sup>3</sup> in 1984 and 1,323,792 m<sup>3</sup> in 2022; the urban area is the type of land use with the highest increase with respect to its percentage contribution to the WY, going from 30.43% to 49.62% between 1984 and 2022, respectively. The increase in urban area mitigated the loss of total WY, explained by a higher percentage runoff rate, surface flow and drainage problems in the study area. |
| first_indexed | 2024-04-25T00:19:16Z |
| format | Article |
| id | doaj.art-a87b3d5ef08f456a9cbe6d2e15aaa58f |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-04-25T00:19:16Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-a87b3d5ef08f456a9cbe6d2e15aaa58f2024-03-12T16:57:36ZengMDPI AGWater2073-44412024-02-0116566410.3390/w16050664Effect of LULC Changes on Annual Water Yield in the Urban Section of the Chili River, Arequipa, Using the InVEST ModelLorenzo Carrasco-Valencia0Karla Vilca-Campana1Carla Iruri-Ramos2Berly Cárdenas-Pillco3Alfredo Ollero4Andrea Chanove-Manrique5Facultad de Arquitectura e Ingenierías Civil y del Ambiente, Universidad Católica de Santa María, Arequipa 040101, PeruFacultad de Arquitectura e Ingenierías Civil y del Ambiente, Universidad Católica de Santa María, Arequipa 040101, PeruFacultad de Arquitectura e Ingenierías Civil y del Ambiente, Universidad Católica de Santa María, Arequipa 040101, PeruFacultad de Arquitectura e Ingenierías Civil y del Ambiente, Universidad Católica de Santa María, Arequipa 040101, PeruDepartamento de Geografía y Ordenación del Territorio, Instituto de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, 50009 Zaragoza, SpainFacultad de Arquitectura e Ingenierías Civil y del Ambiente, Universidad Católica de Santa María, Arequipa 040101, PeruArequipa is a semi-desert city located in southern Peru which depends on the Chili River as its only water source. During recent years, this city has increased its number of inhabitants significantly as a result of internal migratory flows and population growth. Because of this, the city has undergone a rapid urbanization process which has increased the urban areas near the river and caused the destruction of agricultural areas, as well as their native vegetation. This change in land use can be quantified through satellite image analysis across many years, but as noted, there are no studies on its impact on water yield (WY) in the urban section of the river. Now, by using the Integrated Valuation of Ecosystem Services and Compensation (InVEST) model, which allows the WY of the study area to be evaluated in millimeters and cubic meters by introducing a series of variables, such as precipitation, reference evapotranspiration and types of land use classes, among others, it is possible to determine that the WY from the study area was 1,743,414 m<sup>3</sup> in 1984 and 1,323,792 m<sup>3</sup> in 2022; the urban area is the type of land use with the highest increase with respect to its percentage contribution to the WY, going from 30.43% to 49.62% between 1984 and 2022, respectively. The increase in urban area mitigated the loss of total WY, explained by a higher percentage runoff rate, surface flow and drainage problems in the study area.https://www.mdpi.com/2073-4441/16/5/664ecosystem servicesurban riverland use/land coverevapotranspirationprecipitationwater balance |
| spellingShingle | Lorenzo Carrasco-Valencia Karla Vilca-Campana Carla Iruri-Ramos Berly Cárdenas-Pillco Alfredo Ollero Andrea Chanove-Manrique Effect of LULC Changes on Annual Water Yield in the Urban Section of the Chili River, Arequipa, Using the InVEST Model Water ecosystem services urban river land use/land cover evapotranspiration precipitation water balance |
| title | Effect of LULC Changes on Annual Water Yield in the Urban Section of the Chili River, Arequipa, Using the InVEST Model |
| title_full | Effect of LULC Changes on Annual Water Yield in the Urban Section of the Chili River, Arequipa, Using the InVEST Model |
| title_fullStr | Effect of LULC Changes on Annual Water Yield in the Urban Section of the Chili River, Arequipa, Using the InVEST Model |
| title_full_unstemmed | Effect of LULC Changes on Annual Water Yield in the Urban Section of the Chili River, Arequipa, Using the InVEST Model |
| title_short | Effect of LULC Changes on Annual Water Yield in the Urban Section of the Chili River, Arequipa, Using the InVEST Model |
| title_sort | effect of lulc changes on annual water yield in the urban section of the chili river arequipa using the invest model |
| topic | ecosystem services urban river land use/land cover evapotranspiration precipitation water balance |
| url | https://www.mdpi.com/2073-4441/16/5/664 |
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