中国地理科学 ›› 2019, Vol. 20 ›› Issue (5): 798-808.doi: 10.1007/s11769-019-1050-2

• 论文 • 上一篇    下一篇

Impact of the Zhalong Wetland on Neighboring Land Surface Temper-ature Based on Remote Sensing and GIS

DU Jia1, SONG Kaishan1, YAN Baohua2   

  1. 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. Jilin Natural Re-sources Investigation and Planning Center Co., Ltd, Changchun 130061, China
  • 收稿日期:2018-03-30 修回日期:2018-07-26 出版日期:2019-10-27 发布日期:2019-09-26
  • 通讯作者: DU Jia.E-mail:jiaqidu@iga.ac.cn E-mail:jiaqidu@iga.ac.cn
  • 基金资助:

    Under the auspices of National Key Research and Development Program of China (No. 2016YFA0602301-1), Strategic Planning Project of Northeast Institute of Geography and Agroecology (IGA), Chinese Academy of Sciences (No. Y6H2091001)

Impact of the Zhalong Wetland on Neighboring Land Surface Temper-ature Based on Remote Sensing and GIS

DU Jia1, SONG Kaishan1, YAN Baohua2   

  1. 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. Jilin Natural Re-sources Investigation and Planning Center Co., Ltd, Changchun 130061, China
  • Received:2018-03-30 Revised:2018-07-26 Online:2019-10-27 Published:2019-09-26
  • Contact: DU Jia.E-mail:jiaqidu@iga.ac.cn E-mail:jiaqidu@iga.ac.cn
  • Supported by:

    Under the auspices of National Key Research and Development Program of China (No. 2016YFA0602301-1), Strategic Planning Project of Northeast Institute of Geography and Agroecology (IGA), Chinese Academy of Sciences (No. Y6H2091001)

摘要:

Wetlands play a key role in regulating local climate as well as reducing impacts caused by climate change. Rapid observations of the land surface temperature (LST) are, therefore, valuable for studying the dynamics of wetland systems. With the development of thermal remote sensing technology, LST retrieval with satellite images is a practicable way to detect a wetland and its neighboring area's thermal environment from a non-point visual angle rather than the traditional detection from a point visual angle. The mono-windows (MW) method of retrieving LST was validated. On the basis of estimated LST, we used Geographical Information System (GIS) technology to study the impact of wetland reclamation on local temperatures at a regional scale. Following that, correlations between LST and the wetland were analyzed. The results show that:1) It is feasible to retrieve the LST from Landsat 8 OLI satellite images with MW model. The model was validated with the land surface temperature observed in four meteorological stations when the satellite scanned the study region. The satellite retrieval error was approximately 1.01℃. 2) The relationship between the spatial distribution of land surface temperatures and the Zhalong wetland was analyzed based on GIS technology. The results show that wetland has an obvious influence on LST, and that this influence decreases with increasing distance from the wetland. When the distance from the wetland was less than 500 m, its influence on LST was significant. Results also illustrated that the effect of the wetland's different land use/land cover's LST distribution varied with different seasons.

关键词: land surface temperature, cold-humid effect, influence distance, Zhalong wetland

Abstract:

Wetlands play a key role in regulating local climate as well as reducing impacts caused by climate change. Rapid observations of the land surface temperature (LST) are, therefore, valuable for studying the dynamics of wetland systems. With the development of thermal remote sensing technology, LST retrieval with satellite images is a practicable way to detect a wetland and its neighboring area's thermal environment from a non-point visual angle rather than the traditional detection from a point visual angle. The mono-windows (MW) method of retrieving LST was validated. On the basis of estimated LST, we used Geographical Information System (GIS) technology to study the impact of wetland reclamation on local temperatures at a regional scale. Following that, correlations between LST and the wetland were analyzed. The results show that:1) It is feasible to retrieve the LST from Landsat 8 OLI satellite images with MW model. The model was validated with the land surface temperature observed in four meteorological stations when the satellite scanned the study region. The satellite retrieval error was approximately 1.01℃. 2) The relationship between the spatial distribution of land surface temperatures and the Zhalong wetland was analyzed based on GIS technology. The results show that wetland has an obvious influence on LST, and that this influence decreases with increasing distance from the wetland. When the distance from the wetland was less than 500 m, its influence on LST was significant. Results also illustrated that the effect of the wetland's different land use/land cover's LST distribution varied with different seasons.

Key words: land surface temperature, cold-humid effect, influence distance, Zhalong wetland