Mapping ecosystem service dynamic in Wuyuer River watershed, Northeast China from 1954 to 2000

Fang Huang; Ping Wang; Yanqing Li

doi:10.1117/12.760764

15 August 2007 Mapping ecosystem service dynamic in Wuyuer River watershed, Northeast China from 1954 to 2000

Fang Huang, Ping Wang, Yanqing Li

Proceedings Volume 6752, Geoinformatics 2007: Remotely Sensed Data and Information; 675238 (2007) https://doi.org/10.1117/12.760764
Event: Geoinformatics 2007, 2007, Nanjing, China

Abstract

Wuyuer River watershed is one of concentrative and extensive distribution area of inland wetlands in China. Wetland ecosystem plays an important role in maintain the ecological functions in the region. Integrating topographic maps in 1954, Landsat MSS, TM/ETM imagery in 2000 and GIS, spatial-temporal pattern in land-use and ecosystem services in middle and lower Wuyuer River were analyzed in this paper. Results showed that area of marsh decreased from 56.04 ×10⁴ ha to 32.04×10⁴ ha, while the area of cropland increase 24.94×10⁴ ha from 1954 to 2000. The annual loss rate of marsh was -1.48% (from 1954 to 1976) and -0.76% (from 1976 to 2000) respectively. Marsh land were turned into dry grassland and degraded to saline-alkalined land. The grassland decreased 40.26×104 ha dramatically for having been opened up to cropland and degraded into hardly-used land. Due to the negative effect of the decline in wetlands and grassland, total values of Middle and Lower Wuyur River's ecosystem services lost 66.10×10⁸ RMB ¥ with an extent of 14.67% between 1954 and 2000. The highest ecosystem service value centralized in the middle area, and decreased gradually to surrounding regions.

Citation Download Citation

Fang Huang, Ping Wang, and Yanqing Li "Mapping ecosystem service dynamic in Wuyuer River watershed, Northeast China from 1954 to 2000", Proc. SPIE 6752, Geoinformatics 2007: Remotely Sensed Data and Information, 675238 (15 August 2007); https://doi.org/10.1117/12.760764

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KEYWORDS

Ecosystems

Climatology

Agriculture

Earth observing sensors

Geographic information systems

Classification systems

Floods

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