Prediction of global potential suitable habitats of Nicotiana alata Link et Otto based on MaxEnt model

Abstract

Nicotiana alata Link et Otto, widely used in landscaping, is not only of great ornamental value but also of high commercial and medical value. The global potential habitat of N. alata and the environmental factors affecting its distribution are not that clear at present. To provide a reference for the reasonable and extensive planting of N. alata now and in the future, MaxEnt model was used to predict its global suitable habitats under current and future climate conditions, respectively, based on global geographic distribution data of N. alata and the current and future world bioclimatic variables. The results showed that mean annual temperature (bio1), annual precipitation (bio12), temperature seasonality (bio4), and mean temperature of driest quarter (bio9) were the key bioclimatic variables governing the distribution of N. alata. The global suitable habitats of N. alata were mainly distributed in Europe, the United States, Mexico, southeastern South America, and southern Africa under current climate conditions. Compared with current climate conditions, the future climate decreased suitable habitats of N. alata under SSP1-2.6 scenario and increased suitable habitats of N. alata under SSP2-4.5, SSP3-7.0 and SSP5-8.5 climatic scenarios. The results provided valuable information and theoretical reference for the reasonable planting of N. alata.

Population Structure, Distribution, and Spatial Characteristics of Alsophila spinulosa in Chishui, China

“…A previous review of the interspecific relationships of A. spinulosa plants revealed the important influence of biological factors on their growth and development [11]. An investigation of potentially suitable areas for A. spinulosa plant growth at different times also revealed that the geometric center of potentially relevant regions for A. spinulosa growth generally shifted toward the northeast during the last Ice Age through the end of this century, with climatic factors and vegetation types being essential parameters that influence the distribution of potentially suitable growth areas [16]. Studies on A. spinulosa have focused on broad research areas including population and community structure characteristics [17], spatial distributions [18], physiological structures, genetic features [19], pest and disease prevention and control [20], invasiveness [21], and genomic research [22].…”