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Authors
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Funding
Funding for this research was provided by:
national natural science foundation of china (71874026)
national natural science foundation of china (71171044)
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Article History
Received: 21 June 2021
Accepted: 9 November 2021
First Online: 17 November 2021
Declarations
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: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
: The field study of this paper has been approved by Zhalong National Nature Reserve Authority of Heilongjiang, and the author is very grateful to them for their help and support in the field study.
: The questionnaire survey was conducted anonymously and the consent of respondents was obtained before the survey.
: Before participating in the survey, all respondents were informed that the survey was for public welfare and the data was only used for scientific research, so the consent of publication was obtained.
