| 引用本文: | 邵天意,包斯琴,王楠,等.基于TVDI的旱情时空动态变化监测-以神东矿区为例[J].灌溉排水学报,0,():-. |
| ShAO Tianyi,BAO Siqin,WANG Nan,et al.基于TVDI的旱情时空动态变化监测-以神东矿区为例[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】进行旱情的时空动态变化监测，对神东矿区的土地复垦及生态恢复具有指导意义。【方法】采用1991、2002、2007、2010、2014和2018年植被生长季36景Landsat数据，基于TVDI遥感反演模型，对神东矿区1991-2018年植被生长季旱情时空动态变化进行监测。【结果】（1）月际变化表现为，TVDI在每年6-9月出现低值，整体UF～UB曲线几乎小于0，TVDI呈下降趋势。年际变化表现为，1991、2002、2007年TVDI偏离值大于0，TVDI呈上升趋势，2014、2018年偏离值大于0,TVDI呈下降趋势，整体变化趋势同月际变化一致。（2）神东矿区TVDI空间分布始终表现为西南高于东北，干旱等级面积逐年减少。（3）神东矿区TVDI呈下降趋势面积大于TVDI呈上升，TVDI显著下降趋势面积最大为2394.74km2，显著上升面积最小为425.91km2。（4）神东矿区干旱状态逐渐向较干旱、正常状态转变。较干旱状态逐渐向正常和较湿润状态转变。向干旱及较干旱状态转变的范围较小。【结论】基于TVDI模型进行神东矿区旱情动态变化监测效果良好，变化明显，可以为神东矿区土地复垦提供参考价值。 |
| 关键词: 温度干旱植被指数（TVDI）；时空动态变化；旱情；神东矿区 |
| DOI： |
| 分类号:S165.2 |
| 基金项目:]内蒙古自治区科技重大专项“风沙区煤炭资源开采影响土壤性质控机制研究”(ZDZX2018058) |
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| Spatial and temporal dynamic monitoring of drought based on TVDI: A case study of Shendong Mining area |
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ShAO Tianyi1, BAO Siqin1, WANG Nan2, HAN Aruhan1
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1.Inner Mongolia Agricultural University;2.China University of Geosciences
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| Abstract: |
| 【 Objective 】 To monitor the temporal and spatial changes of drought, which has guiding significance for land reclamation and ecological restoration in Shendong Mining Area. 【 Methods 】 The Landsat data of 36 scenes in 1991, 2002, 2007, 2010, 2014 and 2018 vegetation growing seasons were used to monitor the spatial and temporal dynamics of drought in Shendong Mining Area from 1991 to 2018 based on TVDI remote sensing inversion model. 【 Results 】 (1) The intermonthly variation showed that TVDI had a low value from June to September each year, and the overall UF ~ UB curve was almost less than 0, and TVDI showed a downward trend. The interannual variation shows that the deviation value of TVDI in 1991, 2002 and 2007 is greater than 0, and TVDI shows an upward trend. The deviation value of TVDI in 2014 and 2018 is greater than 0, and TVDI shows a downward trend. The overall variation trend is consistent with the intermonthly variation. (2) TVDI spatial distribution of Shendong Mining Area is always higher in southwest than northeast, and the area of drought grade decreases year by year. (3) That the area with decreasing trend of TVDI in Shendong Mining Area is larger than that with increasing trend of TVDI. The area with decreasing trend of TVDI is 2394.74km2 at most, and the area with increasing trend is 425.91km2 at least. (4) That the dry state of Shendong Mining Area gradually changes to a relatively dry and normal state. The dry state gradually changed to normal and wetter state. The transition to drought and drier conditions is less extensive. 【 Conclusion 】 The monitoring effect of dynamic change of drought situation in Shendong Mining Area based on TVDI model is good and the change is obvious, which can provide reference value for land reclamation in Shendong Mining Area. |
| Key words: Temperature Drought Vegetation Index (TVDI); Temporal and spatial dynamics; The drought; Shendong Mining Area |
