[1]ZHOU Junli,XUE Huazhu,DONG Guotao,et al.Comparison and Analysis of Applicability of AMSR_2 Microwave Vegetation Index in the Yellow River Basin[J].Research of Soil and Water Conservation,2018,25(05):378-384.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 05
Page number:
378-384
Column:
Public date:
2018-09-06
- Title:
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Comparison and Analysis of Applicability of AMSR_2 Microwave Vegetation Index in the Yellow River Basin
- Author(s):
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ZHOU Junli1,2, XUE Huazhu1, DONG Guotao2, FAN Dong1, GUO Xinwei2, YIN Huijuan2
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1. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China;
2. Key Laboratory of Soil and Water Loss Process and Control on the Loess Plateau, Ministry of Water Resources, Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China
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- Keywords:
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AMSR_2 microwave data; vegetation index; applicability; Yellow River Basin
- CLC:
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TP79;Q94
- DOI:
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- Abstract:
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Microwave data have the advantages of all-weather, penetrating and free from the clouds, and it is more and more widely used in remote sensing research. This paper uses AMSR_2 dual polarization brightness temperature data from July 2012 to December 2016, to invert microwave polarization index MVI and microwave polarization difference index MPDI18 and MPDI36.5 of different frequencies. The difference between the microwave vegetation index and the optical vegetation index NDVI were compared, and the applicability of microwave vegetation index of the Yellow River Basin was analyzed. The result showed that the microwave penetration index MVI was negatively correlated with the optical vegetation index NDVI, microwave polarization difference index MPDI18 and MPDI36.5 were significantly positively correlated with the optical vegetation index NDVI; among them, the microwave polarization difference index MPDI36.5 was almost identical with the monthly variation trend of the optical vegetation index NDVI, the correlation coefficient reached up to 0.999. The responses of microwave vegetation index and optical vegetation index to rainfall were approximately the same. As a whole, the microwave penetration index and microwave polarization difference index have good applicability in the Yellow River Basin.