[1]CHEN Dan,WANG Fuhai.Research on the Spatiotemporal Differentiation Characteristics of NDMI in Chongqing Metropolitan Area[J].Research of Soil and Water Conservation,2015,22(05):234-239.
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Research on the Spatiotemporal Differentiation Characteristics of NDMI in Chongqing Metropolitan Area
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 05
Page number:
234-239
Column:
Public date:
2015-10-28
- Title:
- Research on the Spatiotemporal Differentiation Characteristics of NDMI in Chongqing Metropolitan Area
- Keywords:
- 3S technology; NDMI; spatiotemporal differentiation characteristics; Chongqing metropolitan area
- CLC:
- X22;X16
- DOI:
- -
- Abstract:
- Normalized Difference Moisture Index (NDMI) is one of the important indexes and process parameters as used to examine urban ecological environment in urbanization process. The key to study the spatiotemporal differentiation characteristics of NDMI is to determine the interference from human. We took the TM data of Chongqing metropolitan area as the remote sensing data source. These methods including terrain niche index, distribution index, plane center model and the center migration rate were used to analyze the spatiotemporal distribution characteristics of NDMI. The results showed that with the extension of construction land and the development of city, land surface moisture content generally reduced; the transfer characteristics between each grade NDMI mainly demonstrated the features with adjacent conversion; low moisture index mainly distributed in the flat with altitudes ranging from 300 m to 500 m and the gental slope with the altitudes varying from 100 m to 400 m; the highest moisture index mainly distributed in the first and the second terrain niche. These results can provide reference and basis for maintaining ecosystem stability and improving the quality of inhabited environment in Chongqing metropolitan area.
- References:
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