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Temporal–spatial study on enclosure culture area in Yangcheng Lake with long-term landsat time series

  • role： First author第一作者
  • Affiliation：

    Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, China

  • Email：jily@mail.ustc.edu.cn
  • Introduction：计璐艳，1986年生，女，助理研究员，研究方向为陆表水体遥感制图。E-mail: jily@mail.ustc.edu.cn
JI Luyan1,  
  • Affiliation：

    School of Electronic and Information Engineering, Suzhou University of Science and Technology, Suzhou 215009, China

YIN Danyan2,  
  • Affiliation：

    Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, China

    AI for Earth Joint Laboratory, Tsinghua University, Beijing 100084, China

GONG Peng13

résumé

Accurate extraction of temporal–spatial information of the enclosure culture area is important to the protection and sustainable development of a lake. In this study, we presented a new method to extract enclosure culture area with long-term Landsat time series. First, we collected all the available Landsat 5 and 8 scenes over Yangcheng Lake from 1984 to 2017 (a total number of scenes of 396). Then, a new algorithm using spectral and texture information was proposed to extract the enclosure culture area. Furthermore, a temporal filter was designed to smooth the time-series results for eliminating the deviation caused by data inconsistency between years. Finally, the manually determined enclosure culture area based on the Google Earth high-resolution image was used as the ground truth reference. Results showed that the producer’s accuracies of the final results were between 72.57% and 88.53%, whereas the user’s accuracies were between 79.79% and 98.10% for three selected years (i.e., 2002, 2010, and 2015). The enclosure culture area in Yangcheng Lake had experienced five stages: no-enclosure culture (1984–1994), rapidly growing (1994–1998), peak (1999–2002), rapidly declining (2003–2006), and stability (2007–2017), with the largest area up to 100 km2 and the current area maintained to 30 km2. By studying the vegetation index (normalized difference vegetation index in this study) of the enclosure culture area, we found that the amount of float vegetation grown significantly after 2002. Comparison with the water quality data showed that the water quality of Yangcheng Lake had not improved significantly since it reached IV level in 2003, although the enclosure culture area had been decreasing since 2002. Therefore, in the development of lake culture, the government should insist on sustainable development and develop the lake economy while maintaining the lake water quality.

mots-clés

remote sensing, Yangcheng Lake;enclosure culture;Chinese mitten crab;water extraction;time-series;Landsat

References

  1. 1.
    Chen T. 2009. Water source protection and fishey economy——A case study of the shrinking incident of seine cultivation in Yangcheng Lake. Symposium on China Environmental Sociology. Nanjing: Chinese Sociological Association, CSA, Hohai University: 402-408
  2. 2.
    Chen X J, Ye J S and Wang Q. 2011. The collocatin of aquatic weeds in crab culture. Farmer Rich, (11): 41
  3. 3.
    Chen X L and Yang H J. 2001. Selection of aquatic plants in shrimp and crab culture. Fishery Guide to be Rich, (15): 41
  4. 4.
    Chu M M. 2004. Discussion on protecting the water quality of Yangchenghu Lake. Jiangsu Water Resources, 12(12): 36–37
  5. 5.
    Ding N. 2015. Research of Water Enviroment and Carring Capacity in the West Yangcheng Lake. Nanjing: Nanjing Agricultural University
  6. 6.
    Feyisa G L, Meilby H, Fensholt R and Proud S. 2014. Automated Water Extraction Index: a new technique for surface water mapping using Landsat imagery. Remote Sensing of Environment, 140: 23–35
  7. 7.
    Huang S, Song K H, Luo J H, Zhao J L and Ma R H. 2017. A remote sensing extraction algorithm of enclosure culture area in shallow lakes based on gradient transform. Journal of Lake Sciences, 29(2): 490–497
  8. 8.
    Ji L Y, Gong P, Geng X R and Zhao Y C. 2015. Improving the accuracy of the water surface cover type in the 30 m FROM-GLC product. Remote Sensing, 7(10): 13507–13527
  9. 9.
    Li J J, He L H, Dai J F and Li J L. 2006. Extract enclosure culture in lakes based on remote sensing image texture information. Journal of Lake Sciences, 18(4): 337–342
  10. 10.
    Li S F, Cai W Q, Zou S M, Li C H, Zhao J L, Wang C H and Chen G J. 2000. Quality analysis of Chinese mitten crab Eriocheir sinensis in Yangchenghu Lake. Journal of Fishery Sciences of China, 7(3): 71–74
  11. 11.
    Liang Y. 2005. Study on sustainable development of Yangchenghu hairy crabs aquaculture. Shanghai: Shanghai Ocean University
  12. 12.
    McFeeters S K. 1996. The use of the Normalized Difference Water Index (NDWI) in the delineation of open water features. International Journal of Remote Sensing, 17(7): 1425–1432
  13. 13.
    Nanjing Institute of Geography and Limnlogy, Chinese Academy of Sciences. 2015. Atlas of Lakes Distribution in China. Beijing: Science Press
  14. 14.
    Ohanian P and Dubes R C. 1992. Performance evaluation for four classes of textural features. Pattern Recognition, 25(8): 819–833
  15. 15.
    Qin W, Ma Y K and Liu W R. 2004. Feeding ecology of Eriocheir sinensis in net-enclosure in Yancheng lake. Freshwater Fisheries, 34(1): 25–27
  16. 16.
    Sun F D, Zhao Y Y, Gong P, Ma R H and Dai Y J. 2014. Monitoring dynamic changes of global land cover types: fluctuations of major lakes in China every 8 days during 2000–2010. Chinese Science Bulletin, 59(2): 171–189
  17. 17.
    Tang Y G. 2010. Water Quality Status of Yangcheng Lake and Initial Study on Ecological Crab Culture. Suzhou: Soochow University
  18. 18.
    Wang D Y, Feng X Z, Zhou L G, Hao J Y and Xu X X. 2008. Relationship between blue algal bloom and water temperature in Lake Taihu based on MODIS. Journal of Lake Sciences, 20(2): 173–178
  19. 19.
    Wang J and Gao J F. 2008. Extraction of enclosure culture in Gehu Lake based on correspondence analysis. Journal of Remote Sensing, 12(5): 716–723
  20. 20.
    Xu H Q. 2006. Modification of normalised difference water index (NDWI) to enhance open water features in remotely sensed imagery. International Journal of Remote Sensing, 27(14): 3025–3033

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