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Research on Estimation of Wetland Area Based on Spacial Sampling Method-A Case Study of Ningxia Hui Autonomous Region in China

Received: 25 October 2021    Accepted: 15 November 2021    Published: 17 November 2021
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Abstract

Investigation and monitoring of wetland is an important and fundamental work. Wetland area estimation by systematic sampling would have higher precision than that get by traditional random sampling. In this paper, wetland areas of different types in Ningxia were estimated by spacial sampling method, based on remote sensing data from 2015 to 2016. Results showed that: 1) According to the second national wetland resource inventory database, wetland area in Ningxia was 20.72×104 hm2, which decreased gradually from north to south, and Wuzhong had relatively largest areas of lakes and marsh wetland. 2) Based with 210 of 4 km×4 km quadrat sampling grids, estimation of wetland area in Ningxia was 21.70×104 hm2, with estimation accuracy of 94.53% and sampling accuracy of 99.78%, which was reliability but the sampling accuracy would decline with the proportion decrease of sampling wetland area. 3) Based with 61 of 4 km×4 km quadrat sampling grids, wetland area in Wuzhong was estimated as 52320.67 hm2 with estimation accuracy of 98.58%, occurred in a net increase of 731.78 hm2 from 2013 to 2016. In conclusion, the spacial sampling method proposed in this research for wetland resource inventory and dynamic monitoring is available and worth of spreading within certain realms, which would improve the protection, management, restoration and sustainable development for wetland resource.

Published in Earth Sciences (Volume 10, Issue 6)
DOI 10.11648/j.earth.20211006.15
Page(s) 292-297
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Wetland Area, Spacial Sampling, Sampling Grids, Estimation Accuracy, Dynamic Monitoring

References
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Cite This Article
  • APA Style

    Ma Wei, Zhang Yangwu, Zhou Tianyuan, Jiang Yafang, Liu Zengli. (2021). Research on Estimation of Wetland Area Based on Spacial Sampling Method-A Case Study of Ningxia Hui Autonomous Region in China. Earth Sciences, 10(6), 292-297. https://doi.org/10.11648/j.earth.20211006.15

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    ACS Style

    Ma Wei; Zhang Yangwu; Zhou Tianyuan; Jiang Yafang; Liu Zengli. Research on Estimation of Wetland Area Based on Spacial Sampling Method-A Case Study of Ningxia Hui Autonomous Region in China. Earth Sci. 2021, 10(6), 292-297. doi: 10.11648/j.earth.20211006.15

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    AMA Style

    Ma Wei, Zhang Yangwu, Zhou Tianyuan, Jiang Yafang, Liu Zengli. Research on Estimation of Wetland Area Based on Spacial Sampling Method-A Case Study of Ningxia Hui Autonomous Region in China. Earth Sci. 2021;10(6):292-297. doi: 10.11648/j.earth.20211006.15

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  • @article{10.11648/j.earth.20211006.15,
      author = {Ma Wei and Zhang Yangwu and Zhou Tianyuan and Jiang Yafang and Liu Zengli},
      title = {Research on Estimation of Wetland Area Based on Spacial Sampling Method-A Case Study of Ningxia Hui Autonomous Region in China},
      journal = {Earth Sciences},
      volume = {10},
      number = {6},
      pages = {292-297},
      doi = {10.11648/j.earth.20211006.15},
      url = {https://doi.org/10.11648/j.earth.20211006.15},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20211006.15},
      abstract = {Investigation and monitoring of wetland is an important and fundamental work. Wetland area estimation by systematic sampling would have higher precision than that get by traditional random sampling. In this paper, wetland areas of different types in Ningxia were estimated by spacial sampling method, based on remote sensing data from 2015 to 2016. Results showed that: 1) According to the second national wetland resource inventory database, wetland area in Ningxia was 20.72×104 hm2, which decreased gradually from north to south, and Wuzhong had relatively largest areas of lakes and marsh wetland. 2) Based with 210 of 4 km×4 km quadrat sampling grids, estimation of wetland area in Ningxia was 21.70×104 hm2, with estimation accuracy of 94.53% and sampling accuracy of 99.78%, which was reliability but the sampling accuracy would decline with the proportion decrease of sampling wetland area. 3) Based with 61 of 4 km×4 km quadrat sampling grids, wetland area in Wuzhong was estimated as 52320.67 hm2 with estimation accuracy of 98.58%, occurred in a net increase of 731.78 hm2 from 2013 to 2016. In conclusion, the spacial sampling method proposed in this research for wetland resource inventory and dynamic monitoring is available and worth of spreading within certain realms, which would improve the protection, management, restoration and sustainable development for wetland resource.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Research on Estimation of Wetland Area Based on Spacial Sampling Method-A Case Study of Ningxia Hui Autonomous Region in China
    AU  - Ma Wei
    AU  - Zhang Yangwu
    AU  - Zhou Tianyuan
    AU  - Jiang Yafang
    AU  - Liu Zengli
    Y1  - 2021/11/17
    PY  - 2021
    N1  - https://doi.org/10.11648/j.earth.20211006.15
    DO  - 10.11648/j.earth.20211006.15
    T2  - Earth Sciences
    JF  - Earth Sciences
    JO  - Earth Sciences
    SP  - 292
    EP  - 297
    PB  - Science Publishing Group
    SN  - 2328-5982
    UR  - https://doi.org/10.11648/j.earth.20211006.15
    AB  - Investigation and monitoring of wetland is an important and fundamental work. Wetland area estimation by systematic sampling would have higher precision than that get by traditional random sampling. In this paper, wetland areas of different types in Ningxia were estimated by spacial sampling method, based on remote sensing data from 2015 to 2016. Results showed that: 1) According to the second national wetland resource inventory database, wetland area in Ningxia was 20.72×104 hm2, which decreased gradually from north to south, and Wuzhong had relatively largest areas of lakes and marsh wetland. 2) Based with 210 of 4 km×4 km quadrat sampling grids, estimation of wetland area in Ningxia was 21.70×104 hm2, with estimation accuracy of 94.53% and sampling accuracy of 99.78%, which was reliability but the sampling accuracy would decline with the proportion decrease of sampling wetland area. 3) Based with 61 of 4 km×4 km quadrat sampling grids, wetland area in Wuzhong was estimated as 52320.67 hm2 with estimation accuracy of 98.58%, occurred in a net increase of 731.78 hm2 from 2013 to 2016. In conclusion, the spacial sampling method proposed in this research for wetland resource inventory and dynamic monitoring is available and worth of spreading within certain realms, which would improve the protection, management, restoration and sustainable development for wetland resource.
    VL  - 10
    IS  - 6
    ER  - 

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Author Information
  • Academy of Forest Inventory and Planning, National Forestry and Grassland Administration, Beijing, China

  • Department of Natural Resources Investigation and Monitoring, Ministry of Natural Resources, Beijing, China

  • Academy of Forest Inventory and Planning, National Forestry and Grassland Administration, Beijing, China

  • Academy of Forest Inventory and Planning, National Forestry and Grassland Administration, Beijing, China

  • Academy of Forest Inventory and Planning, National Forestry and Grassland Administration, Beijing, China

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