基于FY-3A/VIRR数据的藏西北干旱遥感监测研究

doi:10.7522/j.issn.1000-0240.2019.0064

冰川冻土 ›› 2019, Vol. 41 ›› Issue (2): 334-341.doi: 10.7522/j.issn.1000-0240.2019.0064

基于FY-3A/VIRR数据的藏西北干旱遥感监测研究

曾林^1,2，扎西央宗^1,2，冯文兰³，牛晓俊^1,2，扎西欧珠^1,2，拉巴卓玛^2,4

1.西藏自治区气候中心，西藏拉萨 850000；
2.中国气象局成都高原气象研究所拉萨分部，西藏拉萨 850000；
3.成都信息工程大学资源环境学院，四川成都 610225；
4.西藏高原大气环境科学研究所，西藏拉萨 850000

收稿日期:2017-12-23 修回日期:2019-03-04 出版日期:2019-04-25 发布日期:2019-05-18
通讯作者: 扎西央宗，E-mail：zxyz65@163.com E-mail:zxyz65@163.com
作者简介:曾林（1993-），女，汉族，四川成都人，助理工程师，2016年在成都信息工程大学获学士学位，从事高原定量遥感研究. E-mail：979952727@qq.com
基金资助:
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

Study on drought monitoring in northwestern Tibet by remote sensing based on FY-3A/VIRR data

ZENG Lin^1,2, Zhaxi Yangzong^1,2, FENG Wenlan³, NIU Xiaojun^1,2, Zhaxi Ouzhu^1,2, Laba Zhuoma^2,4

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

Received:2017-12-23 Revised:2019-03-04 Online:2019-04-25 Published:2019-05-18

摘要/Abstract

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: font-family:", FY-3A/VIRR">FY-3A/VIRRfont-family:宋体, ；">；font-family:", EOS/MODIS">EOS/MODISfont-family:宋体, ；干旱监测；温度植被干旱指数（">；干旱监测；温度植被干旱指数（font-family:", TVDI">TVDIfont-family:宋体, ）；藏西北')">">）；藏西北

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.

Key words: FY-3A/VIRR')">FY-3A/VIRR, EOS/MODIS, drought monitoring, temperature vegetation drought index (TVDI), northwestern Tibet

中图分类号:

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-3A/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.

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.

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基于FY-3A/VIRR数据的藏西北干旱遥感监测研究

Study on drought monitoring in northwestern Tibet by remote sensing based on FY-3A/VIRR data

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