A review on the methods of determining ecological thresholds

doi:10.13287/j.1001-9332.202102.019

Abstract

Abstract: The drastic changes or threshold phenomena of ecosystems in response to environmental changes are main research focuses in ecology. However, the difficulty in quantitative detection of ecological thresholds hinders the further research progress and application of this topic. Based on typical cases, we analzyed the driving-response mechanism of S-shaped curve type, subsidy-stress type, step type of the potential ecological thresholds. Seven methods to determine ecological thre-shold were summarized, including locally weighted scatterplot smoothing, piecewise regression, Gaussian model, change-point analyzer, regime shift detection, threshold indicator taxa analysis and system dynamics simulation model. The advantages, disadvantages and applicability of those methods were also addressed. This study could provide references for quantitative detection of ecological threshold.

Key words: ecological threshold, quantitative detection method, driving-response relationship, regime shift

HOU Li-ping, HE Ping, FAN Xiao-shan, XU Jie, REN Ying, LI Dai-kui. A review on the methods of determining ecological thresholds[J]. Chinese Journal of Applied Ecology, 2021, 32(2): 711-718.

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