[1]YU Xiao-jing,LIU Huan-jun,QU Chang-xiang,et al.Study on the Spatial Pattern of Land Surface Temperature in Black-soil Zone, Heilongjiang Province[J].Research of Soil and Water Conservation,2012,19(02):66-70.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 02
Page number:
66-70
Column:
Public date:
2012-04-20
- Title:
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Study on the Spatial Pattern of Land Surface Temperature in Black-soil Zone, Heilongjiang Province
- Author(s):
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YU Xiao-jing, LIU Huan-jun, QU Chang-xiang, ZHANG Xin-le, HU Yan-liang, TANG Na
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College of Resources and Enviroment, Northeast Agricultural University, Harbin 150030, China
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- Keywords:
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black-soil zone; land surface temperature; retrieve; spatial analysis
- CLC:
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S161.2;TP391.41
- DOI:
-
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- Abstract:
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Land Surface temperature and drought are the important limiting factors on agricultural production in Heilongjiang Province.Abnormal climate of May 2009 and 2010 had a significant impact on agricultural production and management.Patterns and dynamics of temperature variation and the impact on agricultural production,agriculture-related sectors will provide the scientific basis for farming.By using MODIS data,the land surface temperature data of May 2009 and 2010 were analyzed.The two images were divided 5 levels by density segmentation and mask processing technology,and then the temperature pattern vector space was established.This paper discussed the character of patches of land surface temperature with different level after the temperature zoning by using the analysis method of landscape pattern.On the base of analysis,it discussed the reason for change of land surface temperature(LST) pattern.The results show that:(1) there was a clear spatial LST pattern differences between 2009 and 2010,in May.The average LST of 2009 is about 6.8 K higher than 2010;(2) LST is significantly affected by the underlying surface conditions,different land use types contribute to different LST;(3) different soil types in the drought years have the different impact on surface temperature,black soil and chernozem had a good structural aggregate,strong field capacity,water retention ability,the ability of drought waterlogging of these soils is much better than the other,and to make the greatest contribution to keeping the LST,soil moisture was positively correlated with LST;(4) in the low-lying,the LST was affected by many factors,the change in DEM has the little influence on the LST.With the increase in terrain,DEM is the main factors affecting land surface temperatures.