Infiltration-Friendly Agroforestry Land Uses on Volcanic Slopes in the Rejoso Watershed, East Java, Indonesia
Forest conversion to agriculture can induce the loss of hydrologic functions linked to infiltration. Infiltration-friendly agroforestry land uses minimize this loss. Our assessment of forest-derived land uses in the Rejoso Watershed on the slopes of the Bromo volcano in East Java (Indonesia) focused...
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| Format: | Article |
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MDPI AG
2020-07-01
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| Series: | Land |
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| Online Access: | https://www.mdpi.com/2073-445X/9/8/240 |
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| author | Didik Suprayogo Meine van Noordwijk Kurniatun Hairiah Nabilla Meilasari Abdul Lathif Rabbani Rizki Maulana Ishaq Widianto Widianto |
| author_facet | Didik Suprayogo Meine van Noordwijk Kurniatun Hairiah Nabilla Meilasari Abdul Lathif Rabbani Rizki Maulana Ishaq Widianto Widianto |
| author_sort | Didik Suprayogo |
| collection | DOAJ |
| description | Forest conversion to agriculture can induce the loss of hydrologic functions linked to infiltration. Infiltration-friendly agroforestry land uses minimize this loss. Our assessment of forest-derived land uses in the Rejoso Watershed on the slopes of the Bromo volcano in East Java (Indonesia) focused on two zones, upstream (above 800 m a.s.l.; Andisols) and midstream (400–800 m a.s.l.; Inceptisols) of the Rejoso River, feeding aquifers that support lowland rice areas and drinking water supply to nearby cities. We quantified throughfall, infiltration, and erosion in three replications per land use category, with 6–13% of rainfall with intensities of 51–100 mm day<sup>−1</sup>. Throughfall varied from 65 to 100%, with a zone-dependent intercept but common 3% increase in canopy retention per 10% increase in canopy cover. In the upstream watershed, a tree canopy cover > 55% was associated with the infiltration rates needed, as soil erosion per unit overland flow was high. Midstream, only a tree canopy cover of > 80% qualified as “infiltration-friendly” land use, due to higher rainfall in this zone, but erosion rates were relatively low for a tree canopy cover in the range of 20–80%. The tree canopy characteristics required for infiltration-friendly land use clearly vary over short distances with soil type and rainfall intensity. |
| first_indexed | 2024-03-10T18:17:23Z |
| format | Article |
| id | doaj.art-df6c4baf8760479eb72da72fa19052f5 |
| institution | Directory Open Access Journal |
| issn | 2073-445X |
| language | English |
| last_indexed | 2024-03-10T18:17:23Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Land |
| spelling | doaj.art-df6c4baf8760479eb72da72fa19052f52023-11-20T07:39:02ZengMDPI AGLand2073-445X2020-07-019824010.3390/land9080240Infiltration-Friendly Agroforestry Land Uses on Volcanic Slopes in the Rejoso Watershed, East Java, IndonesiaDidik Suprayogo0Meine van Noordwijk1Kurniatun Hairiah2Nabilla Meilasari3Abdul Lathif Rabbani4Rizki Maulana Ishaq5Widianto Widianto6Soil Science Department, Faculty of Agriculture, Brawijaya University, Jl. Veteran no 1, Malang 65145, IndonesiaSoil Science Department, Faculty of Agriculture, Brawijaya University, Jl. Veteran no 1, Malang 65145, IndonesiaSoil Science Department, Faculty of Agriculture, Brawijaya University, Jl. Veteran no 1, Malang 65145, IndonesiaSoil Science Department, Faculty of Agriculture, Brawijaya University, Jl. Veteran no 1, Malang 65145, IndonesiaSoil Science Department, Faculty of Agriculture, Brawijaya University, Jl. Veteran no 1, Malang 65145, IndonesiaSoil Science Department, Faculty of Agriculture, Brawijaya University, Jl. Veteran no 1, Malang 65145, IndonesiaSoil Science Department, Faculty of Agriculture, Brawijaya University, Jl. Veteran no 1, Malang 65145, IndonesiaForest conversion to agriculture can induce the loss of hydrologic functions linked to infiltration. Infiltration-friendly agroforestry land uses minimize this loss. Our assessment of forest-derived land uses in the Rejoso Watershed on the slopes of the Bromo volcano in East Java (Indonesia) focused on two zones, upstream (above 800 m a.s.l.; Andisols) and midstream (400–800 m a.s.l.; Inceptisols) of the Rejoso River, feeding aquifers that support lowland rice areas and drinking water supply to nearby cities. We quantified throughfall, infiltration, and erosion in three replications per land use category, with 6–13% of rainfall with intensities of 51–100 mm day<sup>−1</sup>. Throughfall varied from 65 to 100%, with a zone-dependent intercept but common 3% increase in canopy retention per 10% increase in canopy cover. In the upstream watershed, a tree canopy cover > 55% was associated with the infiltration rates needed, as soil erosion per unit overland flow was high. Midstream, only a tree canopy cover of > 80% qualified as “infiltration-friendly” land use, due to higher rainfall in this zone, but erosion rates were relatively low for a tree canopy cover in the range of 20–80%. The tree canopy characteristics required for infiltration-friendly land use clearly vary over short distances with soil type and rainfall intensity.https://www.mdpi.com/2073-445X/9/8/240entrainmenterosionforest conversionoverland flowsoil macroporositythroughfall |
| spellingShingle | Didik Suprayogo Meine van Noordwijk Kurniatun Hairiah Nabilla Meilasari Abdul Lathif Rabbani Rizki Maulana Ishaq Widianto Widianto Infiltration-Friendly Agroforestry Land Uses on Volcanic Slopes in the Rejoso Watershed, East Java, Indonesia Land entrainment erosion forest conversion overland flow soil macroporosity throughfall |
| title | Infiltration-Friendly Agroforestry Land Uses on Volcanic Slopes in the Rejoso Watershed, East Java, Indonesia |
| title_full | Infiltration-Friendly Agroforestry Land Uses on Volcanic Slopes in the Rejoso Watershed, East Java, Indonesia |
| title_fullStr | Infiltration-Friendly Agroforestry Land Uses on Volcanic Slopes in the Rejoso Watershed, East Java, Indonesia |
| title_full_unstemmed | Infiltration-Friendly Agroforestry Land Uses on Volcanic Slopes in the Rejoso Watershed, East Java, Indonesia |
| title_short | Infiltration-Friendly Agroforestry Land Uses on Volcanic Slopes in the Rejoso Watershed, East Java, Indonesia |
| title_sort | infiltration friendly agroforestry land uses on volcanic slopes in the rejoso watershed east java indonesia |
| topic | entrainment erosion forest conversion overland flow soil macroporosity throughfall |
| url | https://www.mdpi.com/2073-445X/9/8/240 |
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