How similar is “similar,” or what is the best measure of soil spectral and physiochemical similarity?

• R. Zeng,

  Roles Conceptualization, Formal analysis, Funding acquisition, Methodology, Supervision, Writing – original draft, Writing – review & editing

  Affiliation School of Geography Science, Nanjing University of Information Science and Technology, Nanjing, China

  https://orcid.org/0000-0003-0988-7026

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• J. P. Zhang ,

  Contributed equally to this work with: J. P. Zhang, K. Cai, W. C. Gao, W. J. Pan, C. Y. Jiang, P. Y. Zhang

  Roles Formal analysis

  Affiliation School of Geography Science, Nanjing University of Information Science and Technology, Nanjing, China

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• K. Cai ,

  Contributed equally to this work with: J. P. Zhang, K. Cai, W. C. Gao, W. J. Pan, C. Y. Jiang, P. Y. Zhang

  Roles Funding acquisition, Methodology

  Affiliations Upland Flue-cured Tobacco Quality & Ecology Key Laboratory of China Tobacco Guizhou Academy of Tobacco Science, Guiyang, China, College of Resources and Environment, Southwest University, Chongqing, China

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• W. C. Gao ,

  Contributed equally to this work with: J. P. Zhang, K. Cai, W. C. Gao, W. J. Pan, C. Y. Jiang, P. Y. Zhang

  Roles Funding acquisition, Methodology

  Affiliation Upland Flue-cured Tobacco Quality & Ecology Key Laboratory of China Tobacco Guizhou Academy of Tobacco Science, Guiyang, China

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• W. J. Pan ,

  Contributed equally to this work with: J. P. Zhang, K. Cai, W. C. Gao, W. J. Pan, C. Y. Jiang, P. Y. Zhang

  Roles Funding acquisition, Methodology

  Affiliation China National Tobacco Corporation Guizhou Provincial Company, Guiyang, China

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• C. Y. Jiang ,

  Contributed equally to this work with: J. P. Zhang, K. Cai, W. C. Gao, W. J. Pan, C. Y. Jiang, P. Y. Zhang

  Roles Funding acquisition, Methodology

  Affiliation China National Tobacco Corporation Guizhou Provincial Company, Guiyang, China

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• P. Y. Zhang ,

  Contributed equally to this work with: J. P. Zhang, K. Cai, W. C. Gao, W. J. Pan, C. Y. Jiang, P. Y. Zhang

  Roles Formal analysis

  Affiliation School of Geography Science, Nanjing University of Information Science and Technology, Nanjing, China

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• B. W. Wu ,

  Roles Methodology

  ¶‡ BWW, CHW and XYJ also contributed equally to this work.

  Affiliation School of Geography Science, Nanjing University of Information Science and Technology, Nanjing, China

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• C. H. Wang ,

  Roles Methodology

  ¶‡ BWW, CHW and XYJ also contributed equally to this work.

  Affiliation School of Geography Science, Nanjing University of Information Science and Technology, Nanjing, China

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• X. Y. Jin ,

  Roles Methodology

  ¶‡ BWW, CHW and XYJ also contributed equally to this work.

  Affiliation School of Geography Science, Nanjing University of Information Science and Technology, Nanjing, China

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• D. C. Li

  Roles Funding acquisition, Supervision

  * E-mail: dcli@issas.ac.cn

  Affiliation State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China

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