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2 results for “Tetracentron sinense”
Data from: Evaluating the vulnerability of Tetracentron sinense habitats to climate-induced latitudinal shifts
<p><strong>Objective:</strong> Exploring the changing process of the geographical distribution pattern of <em>Tetracentron sinense</em> Oliv. and its main influencing factors since the last interglacial period can provide a scientific basis for the effective protection and management of the species.</p> <p><strong>Methods: </strong>The MaxEnt model was used to construct the potential distribution areas of <em>T. sinense</em> in different periods such as the last interglacial (LIG), the last glacial maximum (LGM), the Mid-Holocene (MID), the current and future (2050s, 2070s). On the premise of discussing the influence of dominant environmental factors on its distribution model, the suitable area changes of <em>T. sinense</em> under different ecological climate situations were quantitatively analyzed.</p> <p><strong>Results:</strong> (1) The AUC and TSS values predicted by the optimized model were 0.959 and 0.835, respectively, indicating a good predictive effect by the MaxEnt model; the potential suitable areas for <em>T. sinense</em> in the current period are mainly located in southwest China, which are wider compared to the actual habitats. (2) Jackknife testing showed that the lowest temperature in the coldest month (Bio6), elevation (Elev), seasonal variation coefficient of temperature (Bio4) and surface calcium carbonate content (T-CACO3) are the dominant environmental factors affecting the distribution of <em>T. sinense</em>. (3) From the last interglacial period to the current period, the total suitable area of <em>T. sinense</em> showed a decreasing trend; the distribution points of <em>T. sinense</em> populations in Mid-Holocene period may be the origin of the postglacial population, and Southwest China may be its glacial biological refuge. (4) Compared with the current period, the total suitable area ranges of <em>T. sinense</em> in China in the 2050s and 2070s decreased, and the centroid location of its total fitness area all migrated to the northwest, with the largest migration distance in 2070s under the SSPs 7.0 climate scenario.</p> <p><strong>Conclusion:</strong> Temperature was the principal factor influencing the geographical distribution of <em>T. sinense</em>. With the global warming, the range of <em>T. sinense</em> suitable areas will show a shrinking trend, with a shift towards higher-latitude regions. Ex-situ conservation measures could be taken to preserve its germplasm resources.</p>
Data from: Evaluating the vulnerability of Tetracentron sinense habitats to climate-induced latitudinal shifts
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