A Modified Temperature-Vegetation Dryness Index (MTVDI) for Assessment of Surface Soil Moisture Based on MODIS Data
文献类型：期刊论文
| 作者 | Wang, Hao ; Li, Zongshan; Zhang, Weijuan; Ye, Xin; Liu, Xianfeng
|
| 刊名 | CHINESE GEOGRAPHICAL SCIENCE
 |
| 出版日期 | 2022-08 |
| 卷号 | 32期号:4页码:592-605 |
| 关键词 | AIR-TEMPERATURE TRAPEZOID MODEL LOESS PLATEAU SATELLITE WATER EVAPOTRANSPIRATION DROUGHT COVER TVDI RETRIEVAL |
| ISSN号 | 1002-0063 |
| 英文摘要 | Spatio-temporal dynamic monitoring of soil moisture is highly important to management of agricultural and vegetation ecosystems. The temperature-vegetation dryness index based on the triangle or trapezoid method has been used widely in previous studies. However, most existing studies simply used linear regression to construct empirical models to fit the edges of the feature space. This requires extensive data from a vast study area, and may lead to subjective results. In this study, a Modified Temperature-Vegetation Dryness Index (MTVDI) was used to monitor surface soil moisture status using MODIS (Moderate-resolution Imaging Spectroradiometer) remote sensing data, in which the dry edge conditions were determined at the pixel scale based on surface energy balance. The MTVDI was validated by field measurements at 30 sites for 10 d and compared with the Temperature-Vegetation Dryness Index (TVDI). The results showed that the R-2 for MTVDI and soil moisture obviously improved (0.45 for TVDI, 0.69 for MTVDI). As for spatial changes, MTVDI can also better reflect the actual soil moisture condition than TVDI. As a result, MTVDI can be considered an effective method to monitor the spatio-temporal changes in surface soil moisture on a regional scale. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47191]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Wang, Hao |
| 作者单位 | 1.Fujian Normal Univ, Coll Marxism, Fuzhou 350117, Peoples R China 2.Shaanxi Normal Univ, Sch Geog & Tourism, Dept Geog, Xian 710119, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 4.Minist Environm Protect Peoples Republ China, Nanjing Inst Environm Sci, Nanjing 210042, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Hao,Li, Zongshan,Zhang, Weijuan,et al. A Modified Temperature-Vegetation Dryness Index (MTVDI) for Assessment of Surface Soil Moisture Based on MODIS Data[J]. CHINESE GEOGRAPHICAL SCIENCE,2022,32(4):592-605. |
| APA | Wang, Hao,Li, Zongshan,Zhang, Weijuan,Ye, Xin,&Liu, Xianfeng.(2022).A Modified Temperature-Vegetation Dryness Index (MTVDI) for Assessment of Surface Soil Moisture Based on MODIS Data.CHINESE GEOGRAPHICAL SCIENCE,32(4),592-605. |
| MLA | Wang, Hao,et al."A Modified Temperature-Vegetation Dryness Index (MTVDI) for Assessment of Surface Soil Moisture Based on MODIS Data".CHINESE GEOGRAPHICAL SCIENCE 32.4(2022):592-605. |
入库方式： OAI收割
来源：生态环境研究中心
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