Integrated valuation of ecosystem services obtained from restoring water to the environment in a major regulated river basin

Changes in climate and land use land cover (LULC) are important factors that affect water yield (WY). This study explores which factors have more significant impact on changes in WY, spatially and temporally, within the Citarum River Basin Unit (RBU), West Java Province, Indonesia with an area of ±11.317 km2. The climate in the area of Citarum RBU belongs to the Am climate type, which is characterized by the presence of one or more dry months. The objectives of the study were: (1) To estimate a water yield model using integrated valuation of ecosystem services and tradeoffs (InVEST), and (2) to test the sensitivity of water yield (WY) to changes in climate variables (rainfall and evapotranspiration) and in LULC. The integration of remote sensing (RS), geographic information system (GIS), and the integrated valuation of ecosystem services and tradeoffs (InVEST) approach were used in this study. InVEST is a suite of models used to map and value the goods and services from nature that sustain and fulfill human life. The parameters used for determining the WY are LULC, precipitation, average annual potential evapotranspiration, soil depth, and plant available water content (PAWC). The results showed that the WY within the territory of Citarum RBU was 12.17 billion m3/year, with mean WY (MWY) of 935.26 mm/year. The results also show that the magnitude of MWY in Citarum RBU is lower than the results obtained in Lake Rawa Pening Catchment Areas, Semarang Regency and Salatiga City, Central Java (1.137 mm/year) and in the Patuha Mountain region, Bandung Regency, West Java (2.163 mm/year), which have the same climatic conditions. The WY volume decreased from 2006, to 2012, and 2018. Based on the results of the simulation, climatic parameters played a major role affecting WY compared to changes in LULC in the Citarum RBU. This model also shows that the effect of changes in rainfall (14.06–27.53%) is more dominant followed by the effect of evapotranspiration (10.97–23.86%) and LULC (10.29–12.96%). The InVEST model is very effective and robust for estimating WY in Citarum RBU, which was indicated by high coefficient of determination (R2) 0.9942 and the RSME value of 0.70.

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ESTIMASI HASIL AIR DARI DAERAH TANGKAPAN AIR DANAU RAWA PENING DENGAN MENGGUNAKAN MODEL INVEST

MAJALAH ILMIAH GLOBE ◽

10.24895/mig.2017.19-2.578 ◽

2017 ◽

Vol 19 (2) ◽

pp. 157

Author(s):

Nunung Puji Nugroho

Keyword(s):

Spatial Distribution ◽

Ecosystem Services ◽

Water Resources ◽

High Water ◽

Water Yield ◽

Accurate Information ◽

Yield Model ◽

Catchment Areas ◽

Integrated Valuation ◽

Valuation Of Ecosystem Services

ABSTRAKInformasi hasil air dari suatu ekosistem sangat penting dalam pengelolaan sumber daya air. Dalam perencanaan kegiatan konservasi sumber daya air, informasi sebaran spasial hasil air diperlukan untuk menentukan prioritas wilayah terkait dengan alokasi anggaran. Hasil air dari suatu ekosistem atau daerah aliran sungai (DAS) dapat diestimasi dengan menggunakan model hidrologi. Penelitian ini bertujuan untuk mendapatkan informasi tentang hasil air, baik besaran maupun sebaran spasialnya, dari daerah tangkapan air (DTA) Danau Rawa Pening. Hasil air dari lokasi penelitian dihitung dengan menggunakan model hasil air pada InVEST (the Integrated Valuation of Ecosystem Services and Tradeoffs), yang didasarkan pada pendekatan neraca air. Hasil perhitungan menunjukkan bahwa volume hasil air di DTA Danau Rawa Pening pada tahun 2015 adalah sekitar 337 juta m3. SubDAS Galeh, sebagai subDAS terluas, merupakan penghasil air terbesar (72,4 juta m3) diikuti oleh subDAS Sraten (66,8 juta m3) dan Parat (62,4 juta m3). Secara spasial, hasil air di lokasi kajian mempunyai nilai antara 0 hingga 29.634,19 m3/ha. Wilayah hulu dan tengah subDAS Sraten secara umum mempunyai hasil air yang lebih tinggi, sedangkan wilayah danau dan sekitarnya serta hulu subDAS Galeh mempunyai hasil air yang lebih rendah dibandingkan dengan wilayah lainnya. Wilayah dengan hasil air tinggi dapat diprioritaskan dalam kegiatan konservasi sumber daya air untuk mendukung pasokan air ke Danau Rawa Pening.Kata kunci: hasil air, daerah tangkapan air, model InVEST, Danau Rawa PeningABSTRACTAccurate information on water yield from an ecosystem is very important in the management of water resources. In the planning of water resources conservation activities, the information on the spatial distribution of water yield is needed to determine regional priorities related to budget allocations. The water yield from an ecosystem or watershed can be estimated using a hydrological model. This study aimed to obtain information about the water yield, both the magnitude and their spatial distribution, from the catchment areas of Lake Rawa Pening. The water yield from the study area was calculated using the water yield model in InVEST (the Integrated Valuation of Ecosystem Services and Tradeoffs), which based on the water balance approach. The results indicated that the volume of water yield in Lake Rawa Pening for 2015 is approximately 337 million m3. Galeh subwatershed, as the largest subwatershed, is the largest water producer (72.4 million m3), followed by Sraten subwatershed (66.8 million m3) and Parat subwatershed (62.4 million m3). Spatially, the water yield at the study site has a value between 0 to 29,634.19 m3/ha. Upstream and middle areas of Sraten subwatershed generally have higher water yield, while the lake and its surrounding areas as well as the upstream of Galeh subwatershed have lower water yield compared to other regions. The regions with high water yield can be prioritized in water resource conservation activities to support the supply of water to Lake Rawa Pening.Keywords: water yield, catchment areas, InVEST model, Lake Rawa Pening

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Lessons from the integrated valuation of ecosystem services in a developing country: Three case studies on ecological, socio-cultural and economic valuation

Ecosystem Services ◽

10.1016/j.ecoser.2016.10.017 ◽

2016 ◽

Vol 22 ◽

pp. 297-308 ◽

Cited By ~ 20

Author(s):

Clara Villegas-Palacio ◽

Lina Berrouet ◽

Connie López ◽

Aura Ruiz ◽

Alba Upegui

Keyword(s):

Ecosystem Services ◽

Case Studies ◽

Developing Country ◽

Economic Valuation ◽

Integrated Valuation ◽

Valuation Of Ecosystem Services

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Analysis of the uncertainty in the monetary valuation of ecosystem services — A case study at the river basin scale

The Science of The Total Environment ◽

10.1016/j.scitotenv.2015.11.066 ◽

2016 ◽

Vol 543 ◽

pp. 683-690 ◽

Cited By ~ 32

Author(s):

Laurie Boithias ◽

Marta Terrado ◽

Lluís Corominas ◽

Guy Ziv ◽

Vikas Kumar ◽

...

Keyword(s):

Ecosystem Services ◽

River Basin ◽

River Basin Scale ◽

Monetary Valuation ◽

Basin Scale ◽

Valuation Of Ecosystem Services

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Avaliação de Áreas Provedoras de Serviços Ambientais na APA Municipal do Rio Uberaba, Minas Gerais

Revista Brasileira de Cartografia ◽

10.14393/rbcv73n1-51233 ◽

2021 ◽

Vol 73 (1) ◽

pp. 296-312

Author(s):

Aline Claro de Oliveira ◽

Julia Celia Mercedes Strauch ◽

Amarildo da Cruz Fernandes

Keyword(s):

Ecosystem Services ◽

Minas Gerais ◽

Integrated Valuation ◽

Valuation Of Ecosystem Services

A criação de Programas de Pagamentos por Serviços Ambientais (PSA) é uma das políticas públicas que vem sendo adotadas para alinhar os interesses de proprietários de terras que se encontram localizadas em bacias hidrográficas que possuem mananciais utilizados para abastecimento público, aos interesses das companhias de água. Este trabalho objetiva identificar áreas provedoras do serviço ambiental que apresentam controle da erosão na Área de Proteção Ambiental (APA) municipal do rio Uberaba, criada para proteger o manancial de abastecimento público do município de Uberaba, MG. Para isso é utilizado o módulo de retenção de sedimentos do sistema InVEST (Integrated Valuation of Ecosystem Services and Tradeoffs), que utiliza como base a Equação Universal de Perda de Solo e criado um cenário hipotético em que as Áreas de Preservação Permanente (APPs) foram reflorestadas de acordo com a Lei 12.651/2012. Isto permitiu comparar os resultados da modelagem do cenário do ano de 2016 com o cenário hipotético. Como resultado identificou-se que as microbacias da APA municipal do rio Uberaba foram classificadas com perdas de solos médias (61%), média forte (27%), forte (2%), nula a pequena (6%) e moderada (4%). De acordo com a modelagem do InVEST, o total de sedimentos estimados pelas microbacias que compõem a APA municipal do rio Uberaba em 2016 foi de 2.620.062 ton/ano e para o cenário futuro foi de 1.258.989 ton/ano. Esse resultado indica que a recuperação de cerca de 6 km² de APPs pode reduzir a geração de sedimentos em 48%.

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