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Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology

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Proc. IAHS, 379, 287-292, 2018
https://doi.org/10.5194/piahs-379-287-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Pre-conference publication
05 Jun 2018
Analysis of the spatial-temporal change of the vegetation index in the upper reach of Han River Basin in 2000–2016
Jinkai Luan1, Dengfeng Liu1,2, Lianpeng Zhang1, Qiang Huang1, Jiuliang Feng3, Mu Lin4, and Guobao Li5 1State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, School of Water Resources and Hydropower, Xi'an University of Technology, Xi'an 710048, China
2Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT 59717, USA
3Shanxi Provincal Water and Soil Conservation and Ecological Environment Construction Center, Taiyuan 030002, China
4School of statistics and Mathematics, Central University of Finance and Economics, Beijing 100081, China
5Work team of hydraulic of Yulin City, Yulin 719000, China
Abstract. Han River is the water source region of the middle route of South-to-North Water Diversion in China and the ecological projects were implemented since many years ago. In order to monitor the change of vegetation in Han River and evaluate the effect of ecological projects, it is needed to reveal the spatial-temporal change of the vegetation in the upper reach of Han River quantitatively. The study is based on MODIS/Terra NDVI remote sensing data, and analyzes the spatial-temporal changes of the NDVI in August from 2000 to 2016 at pixel scale in the upper reach of Han River Basin. The results show that, the area with increasing NDVI between 0 and 0.005 per year accounts for 62.07 % of the area of upper reach of Han River Basin, and the area with changing rate between −0.005 and 0 per year accounts for 26.65 % of the research area. The area with significant decreasing trend only accounts for 2.76 %, while area significant increasing trend accounts for 13.47 %, and the area with increasing NDVI is much larger than the area with reducing NDVI. The vegetation index of each county is evaluated and found that, the areal proportion with significant decreasing trend in Hantai is the biggest, reaching 35.57 %. The areal proportion with significant increasing trend in Zhenba County, Ziyang County, Xunyang County, Zhashui County, Shangzhou District, Shanyang County and Yun County is larger than the others, and the areal proportions are more than 20 %. The largest areal proportion with significant increasing trend is in Shangzhou District and it reaches 31.11 %. On the whole, the area ratio in all districts and counties with increasing NDVI is much larger than the area ratio with decreasing NDVI.
Citation: Luan, J., Liu, D., Zhang, L., Huang, Q., Feng, J., Lin, M., and Li, G.: Analysis of the spatial-temporal change of the vegetation index in the upper reach of Han River Basin in 2000–2016, Proc. IAHS, 379, 287-292, https://doi.org/10.5194/piahs-379-287-2018, 2018.
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In order to monitor the change of vegetation in Han River and evaluate the effect of ecological projects, it is needed to reveal the spatial-temporal change of the vegetation in the upper reach of Han River quantitatively. The study is based on MODIS/Terra NDVI remote sensing data, and analyzes the spatial-temporal changes of the NDVI in August from 2000 to 2016 at pixel scale in the upper reach of Han River Basin.
In order to monitor the change of vegetation in Han River and evaluate the effect of ecological...
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