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A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China

ZHENG Yaomin NIU Zhenguo GONG Peng LI Mengna HU Lile WANG Lei YANG Yuxiang GU Haijun MU Jinrong DOU Gejia XUE Hui WANG Lin LI Hua DOU Gejie DANG Zhicairang

ZHENG Yaomin, NIU Zhenguo, GONG Peng, LI Mengna, HU Lile, WANG Lei, YANG Yuxiang, GU Haijun, MU Jinrong, DOU Gejia, XUE Hui, WANG Lin, LI Hua, DOU Gejie, DANG Zhicairang. A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China[J]. 中国地理科学, 2017, 27(5): 784-799. doi: 10.1007/s11769-017-0897-3
引用本文: ZHENG Yaomin, NIU Zhenguo, GONG Peng, LI Mengna, HU Lile, WANG Lei, YANG Yuxiang, GU Haijun, MU Jinrong, DOU Gejia, XUE Hui, WANG Lin, LI Hua, DOU Gejie, DANG Zhicairang. A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China[J]. 中国地理科学, 2017, 27(5): 784-799. doi: 10.1007/s11769-017-0897-3
ZHENG Yaomin, NIU Zhenguo, GONG Peng, LI Mengna, HU Lile, WANG Lei, YANG Yuxiang, GU Haijun, MU Jinrong, DOU Gejia, XUE Hui, WANG Lin, LI Hua, DOU Gejie, DANG Zhicairang. A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China[J]. Chinese Geographical Science, 2017, 27(5): 784-799. doi: 10.1007/s11769-017-0897-3
Citation: ZHENG Yaomin, NIU Zhenguo, GONG Peng, LI Mengna, HU Lile, WANG Lei, YANG Yuxiang, GU Haijun, MU Jinrong, DOU Gejia, XUE Hui, WANG Lin, LI Hua, DOU Gejie, DANG Zhicairang. A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China[J]. Chinese Geographical Science, 2017, 27(5): 784-799. doi: 10.1007/s11769-017-0897-3

A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China

doi: 10.1007/s11769-017-0897-3
基金项目: Under the auspices of National Natural Science Foundation of China (No.41201445,41103041),National Science and Technology Support Program (No.2012BAJ24B01),National High Technology Research and Development Program of China (No.2009AA12200307)
详细信息
    通讯作者:

    NIU Zhenguo,E-mail:niuzg@radi.ac.cn;GONG Peng,E-mail:Penggong@mail.tsinghua.edu.cn

A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China

Funds: Under the auspices of National Natural Science Foundation of China (No.41201445,41103041),National Science and Technology Support Program (No.2012BAJ24B01),National High Technology Research and Development Program of China (No.2009AA12200307)
More Information
    Corresponding author: NIU Zhenguo,E-mail:niuzg@radi.ac.cn;GONG Peng,E-mail:Penggong@mail.tsinghua.edu.cn
  • 摘要: Accurate wetland delineation is the basis of wetland definition and mapping, and is of great importance for wetland management and research. The Zoigê Plateau on the Qinghai-Tibet Plateau was used as a research site for research on alpine wetland delineation. Several studies have analyzed the spatiotemporal pattern and dynamics of these alpine wetlands, but none have addressed the issues of wetland boundaries. The objective of this work was to discriminate the upper boundaries of alpine wetlands by coupling ecological methods and satellite observations. The combination of Landsat 8 images and supervised classification was an effective method for rapid identification of alpine wetlands in the Zoigê Plateau. Wet meadow was relatively stable compared with hydric soils and wetland hydrology and could be used as a primary indicator for discriminating the upper boundaries of alpine wetlands. A slope of less than 4.5° could be used as the threshold value for wetland delineation. The normalized difference vegetation index (NDVI) in 434 field sites showed that a threshold value of 0.3 could distinguish grasslands from emergent marsh and wet meadow in September. The median normalized difference water index (NDWI) of emergent marsh remained more stable than that of wet meadow and grasslands during the period from September until July of the following year. The index of mean density in wet meadow zones was higher than the emergent and upland zones. Over twice the number of species occurred in the wet meadow zone compared with the emergent zone, and close to the value of upland zone. Alpine wetlands in the three reserves in 2014 covered 1175.19 km2 with a classification accuracy of 75.6%. The combination of ecological methods and remote sensing technology will play an important role in wetland delineation at medium and small scales. The correct differentiation between wet meadow and grasslands is the key to improving the accuracy of future wetland delineation.
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    [54] Thomas R F, Kingsford R T, Lu Y et al., 2015. Mapping inunda-tion in the heterogeneous floodplain wetlands of the Macquarie Marshes, using Landsat Thematic Mapper. Journal of Hy-drology, 524(2):194-213. doi:10.1016/j.jhydrol.2015. 02.029
    [55] Tiner R W, 1999. Wetland Indicators:A Guide to Wetland Identi-fication, Delineation, Classification, and Mapping. Boca Raton, FL:CRC Press.
    [56] Tiner R W, 2006. Lists of potential hydrophytes for the United States:a regional review and their use in wetland identification. Wetlands, 26(2):624-634. doi: 10.1672/0277-5212
    [57] Tucker C J, 1979. Red and photographic infrared linear combina-tions for monitoring vegetation. Remote Sensing Environment, 8(2):127-150. doi: 10.1016/0034-4257(79)90013-0
    [58] Wilson M J, Bayley S E, 2012. Use of single versus multiple biotic communities as indicators of biological integrity in northern prairie wetlands. Ecological Indicators, 20(2):187-195. doi:10.10 16/j.ecolind.2012.02.009
    [59] Wilson M J, Bayley S E, Rooney R C, 2013. A plant-based index of biological integrity in permanent marsh wetlands yields consistent scores in dry and wet years. Aquatic Conservation:Marine and Freshwater Ecosystems, 23(5):698-709. doi: 10.1002/aqc.2354
    [60] Wilson E H, Sader S A, 2002. Detection of forest harvest type using multiple dates of Landsat TM imagery. Remote Sensing of Environment, 80(3):385-396. doi:10.1016/S0034-4257 (01)00318-2
    [61] Woodward C, Shulmeister J, Larsen J et al., 2014. The hydrolog-ical legacy of deforestation on global wetlands. Science, 346(6211):844-847. doi:10.11 26/science.1260510
    [62] Wu Meiyin, Kalma D, Treadwell-Steitz C, 2014. Differential assessment of designations of wetland status using two deline-ation methods. Environment Management, 54(1):23-29. doi: 10.1007/s00267-014-0273-3
    [63] Xue Z S, Zhang Z S, Lu X G et al., 2014. Predicted areas of po-tential distributions of alpine wetlands under different scenarios in the Qinghai-Tibetan Plateau, China. Global and Planetary Change, 123(10):77-85. doi:10.1016/j.gloplacha.2014. 10.012
    [64] Ye Yu, Liu Gaohuan, Huang Chong et al., 2011. Analysis on rela-tionship between wetland landscape and environmental factors in Zoigê Plateau based on DCCA. Geo-information Science, 13(3):313-322. (in Chinese)
    [65] Zheng Y M, Zhang H Y, Niu Z G et al., 2012. Protection efficacy of national wetland reserves in China. Chinese Science Bulletin, 57(10):1116-1134. doi: 10.1007/s11434-011-4942-9
    [66]  
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出版历程
  • 收稿日期:  2016-03-30
  • 修回日期:  2016-07-11
  • 刊出日期:  2017-10-27

A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China

doi: 10.1007/s11769-017-0897-3
    基金项目:  Under the auspices of National Natural Science Foundation of China (No.41201445,41103041),National Science and Technology Support Program (No.2012BAJ24B01),National High Technology Research and Development Program of China (No.2009AA12200307)
    通讯作者: NIU Zhenguo,E-mail:niuzg@radi.ac.cn;GONG Peng,E-mail:Penggong@mail.tsinghua.edu.cn

摘要: Accurate wetland delineation is the basis of wetland definition and mapping, and is of great importance for wetland management and research. The Zoigê Plateau on the Qinghai-Tibet Plateau was used as a research site for research on alpine wetland delineation. Several studies have analyzed the spatiotemporal pattern and dynamics of these alpine wetlands, but none have addressed the issues of wetland boundaries. The objective of this work was to discriminate the upper boundaries of alpine wetlands by coupling ecological methods and satellite observations. The combination of Landsat 8 images and supervised classification was an effective method for rapid identification of alpine wetlands in the Zoigê Plateau. Wet meadow was relatively stable compared with hydric soils and wetland hydrology and could be used as a primary indicator for discriminating the upper boundaries of alpine wetlands. A slope of less than 4.5° could be used as the threshold value for wetland delineation. The normalized difference vegetation index (NDVI) in 434 field sites showed that a threshold value of 0.3 could distinguish grasslands from emergent marsh and wet meadow in September. The median normalized difference water index (NDWI) of emergent marsh remained more stable than that of wet meadow and grasslands during the period from September until July of the following year. The index of mean density in wet meadow zones was higher than the emergent and upland zones. Over twice the number of species occurred in the wet meadow zone compared with the emergent zone, and close to the value of upland zone. Alpine wetlands in the three reserves in 2014 covered 1175.19 km2 with a classification accuracy of 75.6%. The combination of ecological methods and remote sensing technology will play an important role in wetland delineation at medium and small scales. The correct differentiation between wet meadow and grasslands is the key to improving the accuracy of future wetland delineation.

English Abstract

ZHENG Yaomin, NIU Zhenguo, GONG Peng, LI Mengna, HU Lile, WANG Lei, YANG Yuxiang, GU Haijun, MU Jinrong, DOU Gejia, XUE Hui, WANG Lin, LI Hua, DOU Gejie, DANG Zhicairang. A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China[J]. 中国地理科学, 2017, 27(5): 784-799. doi: 10.1007/s11769-017-0897-3
引用本文: ZHENG Yaomin, NIU Zhenguo, GONG Peng, LI Mengna, HU Lile, WANG Lei, YANG Yuxiang, GU Haijun, MU Jinrong, DOU Gejia, XUE Hui, WANG Lin, LI Hua, DOU Gejie, DANG Zhicairang. A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China[J]. 中国地理科学, 2017, 27(5): 784-799. doi: 10.1007/s11769-017-0897-3
ZHENG Yaomin, NIU Zhenguo, GONG Peng, LI Mengna, HU Lile, WANG Lei, YANG Yuxiang, GU Haijun, MU Jinrong, DOU Gejia, XUE Hui, WANG Lin, LI Hua, DOU Gejie, DANG Zhicairang. A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China[J]. Chinese Geographical Science, 2017, 27(5): 784-799. doi: 10.1007/s11769-017-0897-3
Citation: ZHENG Yaomin, NIU Zhenguo, GONG Peng, LI Mengna, HU Lile, WANG Lei, YANG Yuxiang, GU Haijun, MU Jinrong, DOU Gejia, XUE Hui, WANG Lin, LI Hua, DOU Gejie, DANG Zhicairang. A Method for Alpine Wetland Delineation and Features of Border:Zoigê Plateau, China[J]. Chinese Geographical Science, 2017, 27(5): 784-799. doi: 10.1007/s11769-017-0897-3
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