Lake and Stream Buffer Zone Widths' Effects on Nutrient Export to Lake Rawapening, Central Java, Indonesia: A Simple Simulation Study
Lake ecosystems in Indonesia face serious environmental problems. One of those problems is eutrophication caused by excessive plant nutrients, particularly nitrogen (N) and phosphorus (P). Water quality degradation and biodiversity loss are the effects of eutrophication. The government of Indonesia...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universitas Muhammadiyah Surakarta
2023-07-01
|
| Series: | Forum Geografi |
| Subjects: | |
| Online Access: | https://journals.ums.ac.id/index.php/fg/article/view/21537 |
| _version_ | 1797421249514700800 |
|---|---|
| author | F. Maftukhakh Hilmya Nada Nunung Puji Nugroho Nurzawani Binti Md Sofwa |
| author_facet | F. Maftukhakh Hilmya Nada Nunung Puji Nugroho Nurzawani Binti Md Sofwa |
| author_sort | F. Maftukhakh Hilmya Nada |
| collection | DOAJ |
| description | Lake ecosystems in Indonesia face serious environmental problems. One of those problems is eutrophication caused by excessive plant nutrients, particularly nitrogen (N) and phosphorus (P). Water quality degradation and biodiversity loss are the effects of eutrophication. The government of Indonesia (GoI) has issued a regulation on determining lake and stream buffer zones, but it has not been fully implemented in the field. Additionally, the data related to the effects of each buffer zone width is not available. This study aims to begin to fill this gap. It simulates the effect of lake and stream buffer zone widths on nutrient export to Rawapening Lake. The Nutrient Retention sub-model, which is part of InVEST (Integrated Valuation of Environmental Services and Tradeoffs) software, has been used for this research to analyse information from several data sources, including a Digital Elevation Model (DEM) and measurements of soil depth, annual rainfall, land cover/use, watershed/sub-watershed boundaries, and biophysical conditions. Several studies of eutrophication in Rawapening Lake have measured the magnitude of eutrophication but have not discussed the effects of buffer zone widths. Therefore, this study accommodates the updated data on how much effect of buffer zone widths on the reduction of nutrient export. Five scenarios of buffer zone width are considered: 30 m., 90 m., and 150 m, where the lake buffer zone widths and the stream buffer zone width are 30 m. The results indicated that the maximum nutrient export reduction of lake buffer zones was only 2.63% (for N) and 3.56% (for P). On the other hand, the 30 m stream buffer zone width reduced the nutrient export to Rawapening Lake by up to 43.05% for N and by 44.90% for P. A 30 m combined lake and stream buffer zone width slightly increases the nutrient export reduction effectiveness, i.e., 0.41% and 0.56% for N and P, respectively. |
| first_indexed | 2024-03-09T07:14:10Z |
| format | Article |
| id | doaj.art-4bf7899d3c21456e93d109aebc4cce99 |
| institution | Directory Open Access Journal |
| issn | 0852-0682 2460-3945 |
| language | English |
| last_indexed | 2024-03-09T07:14:10Z |
| publishDate | 2023-07-01 |
| publisher | Universitas Muhammadiyah Surakarta |
| record_format | Article |
| series | Forum Geografi |
| spelling | doaj.art-4bf7899d3c21456e93d109aebc4cce992023-12-03T08:50:00ZengUniversitas Muhammadiyah SurakartaForum Geografi0852-06822460-39452023-07-0137110.23917/forgeo.v37i1.215378070Lake and Stream Buffer Zone Widths' Effects on Nutrient Export to Lake Rawapening, Central Java, Indonesia: A Simple Simulation StudyF. Maftukhakh Hilmya Nada0Nunung Puji Nugroho1Nurzawani Binti Md Sofwa2Badan Riset dan Inovasi Nasional (BRIN)Badan Riset dan Inovasi Nasional (BRIN)Environmental Health Program, Faculty of Health Sciences, Universiti Teknologi MARA Sarawak Branch, 94300 Kota Samarahan, Sarawak, MalaysiaLake ecosystems in Indonesia face serious environmental problems. One of those problems is eutrophication caused by excessive plant nutrients, particularly nitrogen (N) and phosphorus (P). Water quality degradation and biodiversity loss are the effects of eutrophication. The government of Indonesia (GoI) has issued a regulation on determining lake and stream buffer zones, but it has not been fully implemented in the field. Additionally, the data related to the effects of each buffer zone width is not available. This study aims to begin to fill this gap. It simulates the effect of lake and stream buffer zone widths on nutrient export to Rawapening Lake. The Nutrient Retention sub-model, which is part of InVEST (Integrated Valuation of Environmental Services and Tradeoffs) software, has been used for this research to analyse information from several data sources, including a Digital Elevation Model (DEM) and measurements of soil depth, annual rainfall, land cover/use, watershed/sub-watershed boundaries, and biophysical conditions. Several studies of eutrophication in Rawapening Lake have measured the magnitude of eutrophication but have not discussed the effects of buffer zone widths. Therefore, this study accommodates the updated data on how much effect of buffer zone widths on the reduction of nutrient export. Five scenarios of buffer zone width are considered: 30 m., 90 m., and 150 m, where the lake buffer zone widths and the stream buffer zone width are 30 m. The results indicated that the maximum nutrient export reduction of lake buffer zones was only 2.63% (for N) and 3.56% (for P). On the other hand, the 30 m stream buffer zone width reduced the nutrient export to Rawapening Lake by up to 43.05% for N and by 44.90% for P. A 30 m combined lake and stream buffer zone width slightly increases the nutrient export reduction effectiveness, i.e., 0.41% and 0.56% for N and P, respectively.https://journals.ums.ac.id/index.php/fg/article/view/21537lake eutrophicationbuffer zonenutrient exportcatchment arearawapening lake |
| spellingShingle | F. Maftukhakh Hilmya Nada Nunung Puji Nugroho Nurzawani Binti Md Sofwa Lake and Stream Buffer Zone Widths' Effects on Nutrient Export to Lake Rawapening, Central Java, Indonesia: A Simple Simulation Study Forum Geografi lake eutrophication buffer zone nutrient export catchment area rawapening lake |
| title | Lake and Stream Buffer Zone Widths' Effects on Nutrient Export to Lake Rawapening, Central Java, Indonesia: A Simple Simulation Study |
| title_full | Lake and Stream Buffer Zone Widths' Effects on Nutrient Export to Lake Rawapening, Central Java, Indonesia: A Simple Simulation Study |
| title_fullStr | Lake and Stream Buffer Zone Widths' Effects on Nutrient Export to Lake Rawapening, Central Java, Indonesia: A Simple Simulation Study |
| title_full_unstemmed | Lake and Stream Buffer Zone Widths' Effects on Nutrient Export to Lake Rawapening, Central Java, Indonesia: A Simple Simulation Study |
| title_short | Lake and Stream Buffer Zone Widths' Effects on Nutrient Export to Lake Rawapening, Central Java, Indonesia: A Simple Simulation Study |
| title_sort | lake and stream buffer zone widths effects on nutrient export to lake rawapening central java indonesia a simple simulation study |
| topic | lake eutrophication buffer zone nutrient export catchment area rawapening lake |
| url | https://journals.ums.ac.id/index.php/fg/article/view/21537 |
| work_keys_str_mv | AT fmaftukhakhhilmyanada lakeandstreambufferzonewidthseffectsonnutrientexporttolakerawapeningcentraljavaindonesiaasimplesimulationstudy AT nunungpujinugroho lakeandstreambufferzonewidthseffectsonnutrientexporttolakerawapeningcentraljavaindonesiaasimplesimulationstudy AT nurzawanibintimdsofwa lakeandstreambufferzonewidthseffectsonnutrientexporttolakerawapeningcentraljavaindonesiaasimplesimulationstudy |