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首页> 外文期刊>Marine & freshwater research >Hyperspectral inversion of Suaeda salsa biomass under different types of human activity in Liaohe Estuary wetland in north-eastern China
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Hyperspectral inversion of Suaeda salsa biomass under different types of human activity in Liaohe Estuary wetland in north-eastern China

机译：辽河河北省辽河河口湿地不同类型人类活动下苏亚萨生物量的高光谱反转

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摘要

Human activities alter the growth of coastal wetland vegetation. In the present study, we used a spectrometer and hyperspectral data to determine and compare the biomass of Suaeda salsa in a coastal wetland under protective and destructive activities. Using typical discriminants, the hyperspectral data of Suaeda salsa were distinguished under the influence of two kinds of human activity, and the accuracy of the inversion model of biomass was established following improved differentiation of the data under the influence of human activities. The original spectral reflectance and vegetation index were selected, and the biomass-inversion model was established by linear regression and partial least-squares regression. The model established by partial least-squares regression had a good precision (R~2 > 0.85, RMSE% < 5.6%). Hyperspectral technology can accurately show plant biomass and the indirect effects of interference by human activities of different intensity on coastal wetlands. The accuracy of the models can be improved by distinguishing the vegetation patterns under the influence of different types of human activity, and then constructing the biomass models. This study provides technical support for the use of quantitative remote sensing-based methods to monitor the fragile ecology of coastal wetlands under the influence of human activities.
机译：人类活动改变了沿海湿地植被的增长。在本研究中，我们使用了光谱仪和高光谱数据，以确定并比较保护和破坏性活动的沿海湿地的生物量。利用典型的判别，在两种人类活动的影响下，Suaeda Salsa的高光谱数据在两种人类活动的影响下，并在提高人类活动的影响下改善了数据的分化。选择原始的光谱反射和植被指数，并通过线性回归和部分最小二乘回归建立生物质反转模型。由部分最小二乘回归建立的模型具有良好的精度（R〜2> 0.85，RMSE％<5.6％）。高光谱技术可以准确地显示植物生物量和沿海湿地不同强度的人类活动干扰的间接影响。通过区分不同类型的人类活动的影响，可以改善模型的准确性，然后构建生物质模型。本研究为使用定量遥感的方法提供了技术支持，以监测人类活动的影响下沿海湿地的脆弱生态。

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  • 来源
    《Marine & freshwater research》 |2020年第4期|共11页
  • 作者

    Zhiguo Dou; Youzhi Li; Lijuan Cui; Xu Pan; Qiongfang Ma; Yilan Huang; Yinru Lei; Jing Li; Xinsheng Zhao; Wei Li;

  • 作者单位

    Institute of Wetland Research Chinese Academy of Forestry Xiangshan Road Haidian District Beijing 100091 PR China;

    College of Bioscience and Biotechnology Hunan Agricultural University Nongda Road Furong District Changsha Hunan 410000 PR China;

    Institute of Wetland Research Chinese Academy of Forestry Xiangshan Road Haidian District Beijing 100091 PR China;

    Institute of Wetland Research Chinese Academy of Forestry Xiangshan Road Haidian District Beijing 100091 PR China;

    Jilin Provincial Academy of Forestry Science Linhe Street Erdao District Changchun Jilin 130000 PR China;

    Institute of Wetland Research Chinese Academy of Forestry Xiangshan Road Haidian District Beijing 100091 PR China;

    Institute of Wetland Research Chinese Academy of Forestry Xiangshan Road Haidian District Beijing 100091 PR China;

    Institute of Wetland Research Chinese Academy of Forestry Xiangshan Road Haidian District Beijing 100091 PR China;

    Institute of Wetland Research Chinese Academy of Forestry Xiangshan Road Haidian District Beijing 100091 PR China;

    Institute of Wetland Research Chinese Academy of Forestry Xiangshan Road Haidian District Beijing 100091 PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水文科学（水界物理学）;
  • 关键词

    biomass inversion; coastal wetland; destructive; protective; vegetation index; partial least-squares;

    机译：生物量反转;沿海湿地;破坏性;保护;植被指数;部分最小二乘;

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