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Spatio-temporal characteristics and driving forces of landscape structure changes in the middle reach of the Heihe River Basin from 1990 to 2015

  • Feiyan Xiao
  • Guangyao GaoEmail author
  • Qin Shen
  • Xiaofeng WangEmail author
  • Ying Ma
  • Yihe Lü
  • Bojie Fu
Research Article
  • 90 Downloads

Abstract

Context

The oasis, desert–oasis ecotone (DOE) and desert compose the typical landscape structures in arid regions. The detection of landscape structure changes and quantification of the driving forces are vital to sustainable ecosystem management. Previous studies did not integrate the three landscape types, especially considering the role of the DOE, to detect landscape changes.

Objectives

(1) Detect the spatio-temporal dynamics of the landscape structure in the middle reach of the Heihe River Basin from 1990 to 2015. (2) Identify the key driving factors for landscape structure changes and quantify their contributions.

Methods

The decision tree classification algorithm was combined with visual interpretation to extract oasis, DOE and desert areas. Status and trend indicators, transition matrix and landscape metrics were used to characterize the landscape changes. Redundancy analysis and variation portioning analysis were integrated for quantification of driving forces.

Results

Landscape change was characterized by oasis expansion (+ 37.21%) via a one-way transition with an unbalanced status. The contraction of DOE (− 12.73%) and desert (− 8.50%) areas mainly occurred on the periphery of the oasis. The landscape structure changes were mainly driven by the population, river flow and gross domestic product with unique contributions of 35.99, 9.01 and 7.68%, respectively, and a cumulative contribution of 96.64%.

Conclusions

The mutual transformations among landscapes showed distinct spatio-temporal variations. Human activities, especially demographic factors, drove the changes in landscape structure. The development of oasis areas should be controlled within a suitable scale, and the DOE should be protected to maintain the stability of ecosystems in arid regions.

Keywords

Desert–oasis ecotone Oasis expansion Landscape structure change Human activities Quantitative analysis Arid region 

Notes

Acknowledgements

This research was financially supported by the National Key Research and Development Program of China (2017YFA0604703), the National Natural Science Foundation of China (41822103 and 91425301), the Chinese Academy of Sciences (QYZDY-SSW-DQC025) and the Youth Innovation Promotion Association CAS (2016040). The data used in this study, if not collected by the authors or acknowledged in the text, were provided by the Heihe Program Data Management Center (http://www.heihedata.org). We would like to thank the Linze Inland River Basin Research Station Experimental for field experiment support. We would to thank the editor and two anonymous reviewers for their constructive comments which improved the quality of this manuscript.

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.School of Earth Sciences and ResourcesChang’an UniversityXi’anChina
  2. 2.State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina
  3. 3.State Forestry Administration Key Laboratory of Forest Resources & Environmental ManagementBeijing Forestry UniversityBeijingChina
  4. 4.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingChina

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