Land Use/Land Cover Changes and Its Response to Hydrological Characteristics in the Upper Reaches of Minjiang River
Land use changes alter the hydrological characteristics of the land surface, and have significant impacts on hydrological cycle and water balance, the analysis of complex effects on natural systems has become one of the main concerns. In this study, we generated the land use conversion matrixes...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-06-01
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| Series: | Proceedings of the International Association of Hydrological Sciences |
| Online Access: | https://www.proc-iahs.net/379/243/2018/piahs-379-243-2018.pdf |
| Summary: | Land use changes alter the hydrological characteristics
of the land surface, and have significant impacts on hydrological cycle and
water balance, the analysis of complex effects on natural systems has become
one of the main concerns. In this study, we generated the land use
conversion matrixes using ArcGIS and selected several landscape indexes
(contagion index, CONTAG, Shannon's diversity index, SHDI, etc.) to evaluate
the impact of land use/cover changes on hydrological process in the upper
reaches of Minjiang River. We also used a statistical regression model which
was established based on hydrology and precipitation data during the period
of 1959–2008 to simulate the impacts of different land use conditions on
rainfall and runoff in different periods. Our results showed that the
simulated annual mean flow from 1985 to 1995 and 1995 to 2008 are
9.19 and 1.04 m<sup>3</sup> s<sup>−1</sup> lower than the
measured values, respectively, which implied that the ecological protection
measures should be strengthened in the study area. Our study could provide a
scientific basis for water resource management and proper land use planning
of upper reaches of Minjiang River. |
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| ISSN: | 2199-8981 2199-899X |