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Response of Variation of Water and Sediment to Landscape Pattern in the Dapoling Watershed

Author

Listed:
  • Chong Wei

    (College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Zhiqiang Zhang

    (College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Zhiguo Wang

    (School of Architecture, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Lianhai Cao

    (College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Yichang Wei

    (College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Xiangning Zhang

    (Institute of Plant Nutrition and Resource Environment, Henan Academy of Agricultural Science, Zhengzhou 450002, China)

  • Rongqin Zhao

    (College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Liangang Xiao

    (College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Qing Wu

    (College of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

Abstract

The relationship between water-sediment processes and landscape pattern changes has currently become a research hotspot in low-carbon water and land resource optimization research. The SWAT-VRR model is a distributed hydrological model which better shows the effect of land use landscape change on hydrological processes in the watershed. In this paper, the hydrological models of the Dapoling watershed were built, the runoff and sediment yield from 2006 to 2011 were simulated, and the relationship between landscape patterns and water-sediment yield was analyzed. The results show that the SWAT-VRR model is more accurate and reasonable in describing runoff and sediment yield than the SWAT model. The sub-basins whose soil erosion is relatively light are mostly concentrated in the middle reaches with a slope mainly between 0–5°. The NP, PD, ED, SPIIT, SHEI, and SHDI of the watershed increased slightly, and the COHESION, AI, CONTAG, and LPI showed a certain decrease. The landscape pattern is further fragmented, with the degree of landscape heterogeneity increasing and the connection reducing. The runoff, sediment yield and surface runoff are all extremely significantly negatively correlated with forest, which implies that for more complicated patch shapes of forest which have longer boundaries connecting with the patches of other landscape types, the water and sediment processes are regulated more effectively. Therefore, it can be more productive to carry out research on the optimization of water and soil resources under the constraint of carbon emission based on the SWAT-VRR model.

Suggested Citation

  • Chong Wei & Zhiqiang Zhang & Zhiguo Wang & Lianhai Cao & Yichang Wei & Xiangning Zhang & Rongqin Zhao & Liangang Xiao & Qing Wu, 2022. "Response of Variation of Water and Sediment to Landscape Pattern in the Dapoling Watershed," Sustainability, MDPI, vol. 14(2), pages 1-16, January.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:2:p:678-:d:720522
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    References listed on IDEAS

    as
    1. Bareille, Francois & Boussard, Hugues & Thenail, Claudine, 2020. "Productive ecosystem services and collective management: Lessons from a realistic landscape model," Ecological Economics, Elsevier, vol. 169(C).
    2. Boongaling, Cheamson Garret K. & Faustino-Eslava, Decibel V. & Lansigan, Felino P., 2018. "Modeling land use change impacts on hydrology and the use of landscape metrics as tools for watershed management: The case of an ungauged catchment in the Philippines," Land Use Policy, Elsevier, vol. 72(C), pages 116-128.
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