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Effect of Land Use Change on Streamflow of Mae Nam Khuan and Nam Pi Sub-watersheds in Nan and Phayao Provinces |
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| รหัสดีโอไอ | |
| Creator | Anongnat Borrabut |
| Title | Effect of Land Use Change on Streamflow of Mae Nam Khuan and Nam Pi Sub-watersheds in Nan and Phayao Provinces |
| Contributor | Somnimirt Pukngam, Yutthapong Kheereemangkla |
| Publisher | Kasetsart University |
| Publication Year | 2565 |
| Journal Title | Thai Journal of Forestry |
| Journal Vol. | 41 |
| Journal No. | 1 |
| Page no. | 127-138 |
| Keyword | Streamflow, Land use, Mae Nam Khuan sub-watershed, Nam Pi sub-watershed |
| URL Website | https://li01.tci-thaijo.org/index.php/tjf/article/view/253961 |
| Website title | Thai Journal of Forestry |
| ISSN | 2730-2180 |
| Abstract | This research investigated the land use, streamflow, and the effect of land use changes on streamflow of Mae Nam Khuan and Nam Pi Sub-Watershed in Nan and Phayao provinces. Land use data from 6 years, namely 2001, 2007, 2009, 2012, 2015 and 2018 and meteorological and hydrological data during 2000-2019 were used. The data were analyzed for land use change, rainfall, streamflow, specific water yield, and the relationships between land use and streamflow. The results indicated that during 2001-2018, the forest area at Mae Nam Khuan and Nam Pi Sub-Watershed decreased by 11.38 and 4.9 percent of total area, respectively. The most land use change was from forested area to agricultural area, while the urban and water source areas were little change. Averages annual streamflow of Mae Nam Khuan and Nam Pi Sub-Watersheds were 398.08 and 167.95 MCM, which were a specific water yield of 457,170.34 and 255,815.25 m3/year/km2, respectively. Additionally, the runoff coefficients at the sub-watersheds were 0.41 and 0.25, respectively. Considering the relationships between land use and streamflow quantity in the studied area, the land use changed from forest to agricultural area did not influence the streamflow significantly as the forested area in the sub-watershed during the study period remained more than 70 percent of the total area. |
