| 温度植被干旱指数在蒙古高原干旱监测中的应用 |
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| 引用本文： | 康尧,郭恩亮,王永芳,包玉龙,包玉海,那仁满都拉. 温度植被干旱指数在蒙古高原干旱监测中的应用[J]. 应用生态学报, 2021, 32(7): 2534-2544. DOI: 10.13287/j.1001-9332.202107.018 |
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| 作者姓名： | 康尧 郭恩亮 王永芳 包玉龙 包玉海 那仁满都拉 |
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| 作者单位： | 1.内蒙古师范大学地理科学学院, 呼和浩特 010022;2.内蒙古自治区蒙古高原灾害与生态安全重点实验室, 呼和浩特 010022;3.中国气象局兰州干旱气象研究所, 兰州 730020;4.内蒙古师范大学遥感与地理信息系统重点实验室, 呼和浩特 010022 |
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| 基金项目： | 内蒙古自然科学基金联合项目(2020LH04003)、国家自然科学基金项目(41807507)、内蒙古师范大学高层次人才科研启动经费项目(2019YJRC003,2018YJRC008)、中国气象局干旱气象科学研究基金项目(IAM201904)和国家自然科学基金重点项目(61631011) |
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| 摘 要： | 以蒙古高原为研究区,选择2000-2019年植物生长季的MODIS归一化植被指数(NDVI)和陆地表面温度(LST)构建NDVI-LST特征空间,由该特征空间计算蒙古高原温度植被干旱指数(TVDI);利用Theil-Sen Median趋势分析、Mann-Kendall检验及Hurst指数方法分析蒙古高原TVDI的时空...
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| 关 键 词： | 干旱监测 温度植被干旱指数 MODIS 蒙古高原 |
| 收稿时间： | 2020-12-09 |
Application of temperature vegetation dryness index for drought monitoring in Mongolian Plateau |
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| KANG Yao,GUO En-liang,WANG Yong-fang,BAO Yu-long,BAO Yu-hai,NA Ren-mandula. Application of temperature vegetation dryness index for drought monitoring in Mongolian Plateau[J]. The journal of applied ecology, 2021, 32(7): 2534-2544. DOI: 10.13287/j.1001-9332.202107.018 |
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| Authors: | KANG Yao GUO En-liang WANG Yong-fang BAO Yu-long BAO Yu-hai NA Ren-mandula |
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| Affiliation: | 1.College of Geographical Science, Inner Mongolia Normal University, Hohhot 010022, China;2.Inner Mongolia Key Laboratory of Disaster and Ecological Security on the Mongolian Plateau, Hohhot 010022, China;3.Lanzhou Institute of Arid Meteorology, China Meteoro-logical Administration, Lanzhou 730020, China;4.Key Laboratory of Remote Sensing and Geographic Information Systems, Inner Mongolia Normal University, Hohhot 010022, China |
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| Abstract: | Taking the Mongolian Plateau as the study area, the MODIS normalized difference vegetation index (NDVI) and the land surface temperature (LST) in the growing season from 2000 to 2019 were used to construct the NDVI-LST feature space, and based on which the temperature vege-tation dryness index (TVDI) of the Mongolian Plateau was calculated. We used Theil-Sen Median trend analysis, Mann-Kendall test, and Hurst index method to analyze the spatial and temporal varia-tions and future trends of TVDI on the Mongolian Plateau. Furthermore, we examined the relationship between meteorological factors and TVDI on the Mongolian Plateau using partial correlation analysis. The results showed that the TVDI of the Mongolian Plateau during 2000-2019 showed an increasing trend with a rate of 0.0001·a-1, indicating that the Mongolian Plateau's drought condition became heavier slightly in the last 20 years. The drought condition in meadow steppe and typical steppe gradually decreased, and that in desert steppe and alpine grassland was increased. The average Hurst index of TVDI in the growing season was 0.45, and the area with TVDI less than 0.5 accounted for 71.5% of the total area, which indicated that the TVDI during 2000-2019 in most areas turned opposite to the past. In the future, the drought condition in the central desert steppe area and the eastern meadow steppe area might increase, and that in most of the typical steppe and the desert steppe in Inner Mongolia tended to decrease. The drought change in the alpine grassland area was uncertain. There was a significant positive correlation between the TVDI and temperature in 33.6% area of the Mongolian Plateau and a significant negative correlation between the TVDI and precipitation in 34.8% of the area. Moreover, the meteorological factors heavily affected the typical steppe. |
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| Keywords: | drought monitoring temperature vegetation drought index MODIS Mongolian Plateau |
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