Natural and Anthropogenic Factors Condition Production–Living–Ecology Function Interactions in the Karst Region of Southwest China

Résumé fourni par la source

Coordinating production–living–ecology (PLE) land use requires an accurate account of how PLE functions interact, yet most studies treat these interactions as static attributes and report their thresholds in isolation. We instead treat them as dynamic states conditioned by their driving factors. For the karst region of southwest China, we identified the leading natural and the leading anthropogenic factors of the PLE functions with Geodetector, fixed one natural and one anthropogenic conditioning axis for each function pair by a pair-level rule, and reconstructed the 2010 and 2019 Pareto frontiers of each pair along those two gradients; curve tipping points distinguished reversal-type from buffer-type thresholds, from which regulation zones follow directly. Production–ecology and living–ecology are trade-offs over the fitted range, whereas the production–living boundary rises over most of the production range. Total benefit at the equal-weight reference optimum rose in all three pairs (0.552 to 0.636, 0.701 to 0.726, and 0.823 to 0.872), with no decrease in any of 1000 block bootstrap resamples. Boundaries also differed between areas of rising and of falling constraint function, but the two groups are unbalanced in terms of elevation and population density, so this contrast is reported as a descriptive comparison only. Along the elevation gradient the living–ecology interaction shows one reversal-type threshold in each year, at 595 and 756 m, whose confidence intervals define a precautionary management envelope of 498 to 939 m; along the population density gradient no threshold survived at the sub-watershed scale. The framework gives an operable basis for differentiated regulation in fragile regions.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.