Construction and evaluation of a vegetation coverage retrieval model for alpine prairie in Bayanbulak grassland

Xin Guan; Sha-zhou An; Qi-lei Xun; Yi-qiang Dong; Xiao-jing Kong; Jiao Yang

doi:10.11829/j.issn.1001-0629.2017-0534

Pratacultural Science > 2018 > 12(5): 949-955. > DOI: 10.11829/j.issn.1001-0629.2017-0534

Xin Guan, Sha-zhou An, Qi-lei Xun, Yi-qiang Dong, Xiao-jing Kong, Jiao Yang. Construction and evaluation of a vegetation coverage retrieval model for alpine prairie in Bayanbulak grassland[J]. Pratacultural Science, 2018, 12(5): 949-955. DOI: 10.11829/j.issn.1001-0629.2017-0534

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Construction and evaluation of a vegetation coverage retrieval model for alpine prairie in Bayanbulak grassland

College of Pratacultural and Environmental Science, Xinjiang Agricultural University, Key Laboratory of Grassland Resources and Ecology of Xinjiang, Urumqi 830052, Xinjiang, China

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Received Date: October 10, 2017
Revised Date: January 17, 2018
Published Date: May 19, 2018

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Abstract

Abstract

We constructed an inversion model of the vegetation coverage of the alpine prairie in Bayanbulak, screening for the best model and checking its accuracy, which will provide a scientific basis for carrying out grassland monitoring and scientific management in the alpine prairie of Bayanbulak in future. An empirical regression model and pixel dichotomy were used to calculate the vegetation coverage and vegetation indices and to construct the inversion model. The results showed that there were significant positive correlations between the vegetation indices, except for the Modified Soil Adjusted Vegetation Index (MSAVI), and vegetation coverage (P<0.01). The best inversion model of alpine steppe vegetation coverage in Bayanbulak is the quadratic polynomial regression model of NDVI:y=-0.894x2+1.467x+0.099 (R2=0.723); its inversion accuracy is higher (R2=0.837), and can be used to estimate the vegetation coverage of Bayanbulak alpine steppes.
- alpine grassland,
- Landsat 8,
- vegetation index,
- retrieval model,
- dimidiate pixel model,
- NDVI,
- vegetation coverage

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References

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Construction and evaluation of a vegetation coverage retrieval model for alpine prairie in Bayanbulak grassland

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