| Cite this article: | 刘立文.山西省农业干旱时空变化特征[J].灌溉排水学报,0,():-. |
| liuliwen.山西省农业干旱时空变化特征[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Characteristics of Drought Spatio-temporal Transformation in Shanxi Province |
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liuliwen
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College of Resources and Environment, Shanxi Agricultural University
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| Abstract: |
| 【Objective】Remote sensing as a tool can obtain soil moisture data quickly and accurately, and then provide scientific basis for agricultural drought monitoring.【Method】 Based on the data of surface temperature and vegetation index of modis in the summer of 2009 to 2018, the data of agricultural drought condition is obtained through the TVDI model, and the spatial and temporal variation of agricultural drought in Shanxi province is studied by means of trend analysis, stability analysis, hurst index and so on. 【Result】In the past 10 years, the drought condition of Shanxi Province in the summer is generally normal, and the drought is mainly concentrated in the southernern area. And the change of the trend shows that the central part of Shanxi are becoming more humid, while the southern area becomes more arid. In addition, the value of TVDI is negatively correlated with the elevation and the slope.The stability analysis shows that the change of the TVDI value tends to be moderately stable, meanwhile the H-index indicates that the center of Shanxi's region will continue to become significantly wet, while the southern area continues to become slightly dry.【Conclusion】In the future, most areas will still be in a stable and humid state of agricultural drought in summer in Shanxi Province. |
| Key words: Shanxi province; Agricultural drought; TVDI; Trend analysis; Stability analysis;Hurst index |
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