湖北农业科学 ›› 2023, Vol. 62 ›› Issue (3): 241-248.doi: 10.14088/j.cnki.issn0439-8114.2023.03.038

• 气象·气候 • 上一篇    下一篇

基于FY-3D_TVDI的黑龙江省生长季干旱监测评估

徐作敏1, 吴双1, 吴英2, 宫丽娟3, 姜丽霞3, 孙涛1, 程春香1, 谢连妮1   

  1. 1.黑龙江省生态气象中心,哈尔滨 150030;
    2.中国气象局公共气象服务中心,北京 100081;
    3.黑龙江省气象科学研究所,哈尔滨 150030
  • 收稿日期:2021-10-25 发布日期:2023-04-20
  • 通讯作者: 吴 双(1987-),女,黑龙江哈尔滨人,工程师,硕士,主要从事遥感应用、卫星遥感火情监测研究,(电话)0451-82053965(电子信箱)qkswushuang@sina.com。
  • 作者简介:徐作敏(1994-),女,黑龙江哈尔滨人,工程师,硕士,主要从事遥感应用、卫星遥感干旱监测研究,(电话)0451-82053965(电子信箱)xuzuomin16@mails.ucas.ac.cn
  • 基金资助:
    中国气象局东北地区生态创新开放实验室开放研究基金项目(stqx201905)

Monitoring and evaluation on drought in the growing season of Heilongjiang Province based on FY-3D_TVDI

XU Zuo-min1, WU Shuang1, WU Ying2, GONG Li-juan3, JIANG Li-xia3, SUN Tao1, CHENG Chun-xiang1, XIE Lian-ni1   

  1. 1. Heilongjiang Eco-meteorological Center,Harbin 150030, China;
    2. China Meteorological Administration Public Meteorological Service Center, Beijing 100081, China;
    3. Heilongjiang Province Institute of Meteorological Science,Harbin 150030, China
  • Received:2021-10-25 Published:2023-04-20

摘要: 基于FY-3D气象卫星数据构建Ts-NDVI特征空间,计算温度植被干旱指数(TVDI),分析2020年生长季内黑龙江省主要农区干旱时空分布变化,并结合高程、坡度以及气象数据,分析TVDI变化影响因子。结果表明,2020年生长季黑龙江省农区TVDI空间分布具有较强的区域性差异,呈现北部、东部较湿润,西部、中部、南部较干旱趋势;东部农区TVDI主要分布于0.2~0.6属于正常或偏涝,其他农区有2次典型干旱事件的发生,干旱峰值位于5月中旬和9月上旬。以400 m 高程为分界点,小于400 m 高程区域的TVDI与高程呈正相关关系,大于400 m高程区域的TVDI与高程呈负相关关系;坡度分界点为3.5°,小于3.5°区域TVDI随坡度的增加逐渐增大,大于3.5°区域TVDI随坡度的增加缓慢下降。旬平均气温对TVDI的影响大于旬累计降水量,且平均气温对TVDI存在持续性的影响,持续时间可达1~2旬。

关键词: 干旱, 温度植被干旱指数(TVDI), 遥感, 时空分布, 黑龙江省

Abstract: A Ts-NDVI feature space was constructed based on FY-3D meteorological satellite data, and the temperature vegetation dryness index (TVDI) was calculated. The temporal and spatial distribution of drought in the main agricultural areas of Heilongjiang Province in the 2020 growing season was evaluated. In addition, the impact factor of TVDI was studied based on elevation, slope and meteorological data. The results showed that,in the 2020 growing season, a significant regional difference was found on the spatial distribution of TVDI in agricultural areas in Heilongjiang Province, indicating a trend of humidity in north and east, arid in western, central, and southern regions. The TVDI in the east agricultural areas, which was normal or partial waterlogging, was mainly distributed from 0.2 to 0.6. There were 2 typical drought events in other agricultural areas, and the drought peaks were in mid-May and early September.With the 400 m elevation as the cut-off point, the TVDI in the less than 400 m elevation region was positively correlated with the elevation, and the TVDI above the 400 m elevation region was negatively correlated with the elevation. The slope inflection point was 3.5°. TVDI gradually increased with the increase of the slope before the inflection point, and slowly decreased with the increase in the slope after the inflection point. The impact of ten-day average temperature on TVDI was greater than that of ten-day cumulative precipitation, and the average temperature had a continuous impact on TVDI, lasting about 10 to 20 days.

Key words: drought, temperature vegetation dryness index (TVDI), remote sensing, temporal and spatial distribution, Heilongjiang Province

中图分类号: