| 基于FY-3 A/VIRR数据的藏西北干旱遥感监测研究 |
| |
| 引用本文： | 曾林,扎西央宗,冯文兰,牛晓俊,扎西欧珠,拉巴卓玛.基于FY-3 A/VIRR数据的藏西北干旱遥感监测研究[J].冰川冻土,2019,41(2):334-341. |
| |
| 作者姓名： | 曾林 扎西央宗 冯文兰 牛晓俊 扎西欧珠 拉巴卓玛 |
| |
| 作者单位： | 西藏自治区气候中心,西藏 拉萨850000;中国气象局 成都高原气象研究所拉萨分部,西藏 拉萨850000;成都信息工程大学资源环境学院,四川 成都,610225;中国气象局 成都高原气象研究所拉萨分部,西藏 拉萨850000;西藏高原大气环境科学研究所,西藏 拉萨850000 |
| |
| 基金项目： | 国家自然科学基金项目（41465006;41665002）;西藏自治区科技厅重点项目（XZ201703-GA-01）;西藏自治区气象局高原遥感应用技术创新团队资助 |
| |
| 摘 要： | 藏西北地区生态环境脆弱,由于地形复杂、气候独特,该区的观测资料非常缺乏。利用遥感技术开展藏西北地区的干旱监测,能获取在空间上连续变化的地表干旱情况,对于指导该区农牧业生产具有重要的意义。基于FY-3A/VIRR的一级数据和标准旬产品（地表温度、植被指数）,采用温度植被干旱指数（TVDI）进行藏西北地区的干旱监测研究,并将监测结果分别与基于EOS/MODIS数据监测的结果、同期的野外实测土壤水分数据以及气象站点的降水量数据进行了对比分析。结果表明：利用FY-3A/VIRR数据的TVDI遥感监测结果与实测土壤水分、气象站累计降水量数据均呈显著的负相关关系,通过了0.01水平的显著性检验;利用FY-3A/VIRR数据与EOS/MODIS数据估算的TVDI干旱等级空间分布特征基本一致,FY-3A/VIRR数据可以代替EOS/MODIS数据在藏西北地区开展干旱遥感监测,可为指导藏西北地区农牧业生产提供数据支持。
|
| 关 键 词： | FY-3A/VIRR EOS/MODIS 干旱监测 温度植被干旱指数(TVDI) 藏西北 |
| 收稿时间： | 2017-12-23 |
| 修稿时间： | 2019-03-04 |
Study on drought monitoring
in northwestern Tibet by remote sensing based on FY-3A/VIRR data |
| |
| ZENG Lin,Zhaxi Yangzong,FENG Wenlan,NIU Xiaojun,Zhaxi Ouzhu,Laba Zhuoma.Study on drought monitoring
in northwestern Tibet by remote sensing based on FY-3A/VIRR data[J].Journal of Glaciology and Geocryology,2019,41(2):334-341. |
| |
| Authors: | ZENG Lin Zhaxi Yangzong FENG Wenlan NIU Xiaojun Zhaxi Ouzhu Laba Zhuoma |
| |
| Institution: | 1.Tibet Autonomous Region Climate Centre, Lhasa
850000, China;
2.Lhasa Branch of Chengdu
Institute of Plateau Meteorology, China Meteorological Administration, Lhasa
850000, China;
3.Institute of Resources
and Environment, Chengdu University of Information Technology, Chengdu 610225,
China;
4.Tibetan Institute of Plateau Atmospheric
Environment and Sciences, Lhasa 850000, China |
| |
| Abstract: | Because
of complicated landform and harsh climate, the meteorological observation data
were very scarce in northwestern Tibet, which is characterized by vulnerable ecological
environment. Drought monitoring by remote sensing could obtain drought
conditions with continuous changes on the surface, which was of great
significance for the arrangement of agricultural and husbandry production in
this area. In this paper, we try to reveal the drought in northwestern Tibet based
on primary data, standard products (surface temperature, vegetation index) of
FY-3A/VIRR and drought monitoring and TVDI (temperature vegetation drought
index). Then,
the monitoring results has been compared, respectively, the results of the
EOS/MODIS data monitoring, field measured soil moisture data during this
period, and the precipitation data from weather stations. The results were
compared with those monitoring results based on MODIS data, measured soil
moisture, the meteorological observation data. It is found that the TVDI
calculated by FY-3A/VIRR showing a significant negative correlation with the
measured soil moisture and accumulated precipitation, which had passed the
remarkable test of the 0.01 level; they were basically the same that the
spatial distribution characteristics of TVDI drought grades estimated by remote
sensing using FY-3A/VIRR data and EOS/MODIS data. Therefore, the FY-3A/VIRR
data could be used to carry out drought monitoring by remote sensing in
northwestern Tibet instead of EOS/MODIS data, also available for providing data
support for guiding agricultural and husbandry production in northwestern
Tibet. |
| |
| Keywords: | 5pt FY-3A/VIRR" target="_blank">font-family:"">FY-3A/VIRR EOS/MODIS drought monitoring temperature vegetation drought index (TVDI) northwestern Tibet |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《冰川冻土》浏览原始摘要信息 |
| 点击此处可从《冰川冻土》下载免费的PDF全文 |
|
