[1]ZHOU Hanbing,WANG Zhitai,WANG Zhijie,et al.Response of Ecosystem Service Value of Karst Mountainous City to Terrain Gradient[J].Research of Soil and Water Conservation,2021,28(06):337-347.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 06
Page number:
337-347
Column:
Public date:
2021-10-10
- Title:
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Response of Ecosystem Service Value of Karst Mountainous City to Terrain Gradient
- Author(s):
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ZHOU Hanbing1,WANG Zhitai1,2,WANG Zhijie3,BAO Yu1,2
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(1.College of Forestry,Guizhou University,Guiyang 550025,China; 2.Landscape Architecture Planning and Design Center,Guizhou University,Guiyang 550025,China; 3.College of Life Science,Guizhou University,Guiyang 550025,China)
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- Keywords:
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karst area; mountainous city; ecosystem service value; terrain gradient; Guiyang
- CLC:
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X171.1
- DOI:
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- Abstract:
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Karst area has its special geographical and geomorphological properties. In order to explore the influence of ‘City mountain mosaic' special mountain city terrain factors on urban ecosystem service value,we took Guiyang City,a typical karst mountainous city,as the research area,and used terrain potential index,terrain distribution index combined with the modified ‘equivalent factor method'and Landsat TM remoted sensing image map in the downtown of Guiyang City in 2018 to evaluate the ecosystem service value of downtown of Guiyang City. The results showed that:(1)the land use types distributed in three sections in space,water land,cropland,grassland and built land had obvious advantages in the low-terrain area(1~10); bare land and cropland had certain advantages in the middle-terrain area(10~20); forest land had an absolute advantage in the high-terrain area(20~50); with the increase of terrain gradient,the dominant terrain area of wetland,water area,cultivated land,grassland and built land gradually changed to the dominant terrain area dominated by forest land;(2)the total ecosystem service value in central district of Guiyang in 2018 was 723 million yuan; on the whole,the terrain gradient showed a trend of first rising and then descending; the service value of ecosystem per unit area increased first,then decreased and finally raised;(3)there were significant differences in the topographic gradient in the exponential advantages of service value and size distribution of individual ecosystems; terrain gradients responded significantly(R2>0.75,and the maximum is 0.96)to individual ecosystem services; the advantages of topographic gradient were hydrological regulation and climate regulation. In general,the terrain and land use type area had the significant impact on the ecosystem service value in the central urban area of Guiyang.