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Journal of Oceanology and Limnology

, Volume 36, Issue 4, pp 1236–1243 | Cite as

Development of a location-weighted landscape contrast index based on the minimum hydrological response unit

  • Xin Zhang (张新)
  • Yuqi Liu (刘玉琦)
  • Yongxin Chen (陈永新)
Ecology
  • 3 Downloads

Abstract

The changing patterns of watersheds in a landscape, driven by human activities, play an important role in non-point source pollution processes. This paper aims to improve the location-weighted landscape contrast index using remote sensing and GIS technology to account for the effects of scale and ecological processes. The hydrological response unit (HRU) with a single land use and soil type was used as the smallest unit. The relationship between the landscape index and typical ecological processes was established by describing the influence of the landscape pattern on non-point source pollution. To verify the research method, this paper used the Yanshi River basin as a study area. The results showed that the relative intensity of non-point source pollution in different regions of the watershed and the location-weighted landscape contrast index based on the minimum HRU can qualitatively reflect the risk of regional nutrient loss.

Keyword

landscape spatial load contrast index minimum hydrological response unit remote sensing non-point source pollution 

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Notes

Acknowledgement

The authors would like to thank the anonymous reviewers for their constructive comments and suggestions.

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Copyright information

© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Xin Zhang (张新)
    • 1
  • Yuqi Liu (刘玉琦)
    • 1
    • 2
  • Yongxin Chen (陈永新)
    • 1
    • 2
  1. 1.Institute of Remote Sensing and Digital EarthChinese Academy of SciencesBeijingChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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