Tang Xinggang, Yuan Yingdan, Zhang Xing, et al. Distribution and Environmental Factors of Castanea Mollissima in Soil and Water Loss Areas in China[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 345-352.
DOI:
Tang Xinggang, Yuan Yingdan, Zhang Xing, et al. Distribution and Environmental Factors of Castanea Mollissima in Soil and Water Loss Areas in China[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 345-352. DOI: 10.13961/j.cnki.stbctb.2021.02.045.
Distribution and Environmental Factors of Castanea Mollissima in Soil and Water Loss Areas in China
[Objective] The spatial distribution and ecological characteristics of Castanea mollissima in China under the current climate background were predicted in order to provide a theoretical support for the rational introduction and application of Castanea mollissima in soil and water loss areas.[Methods] Based on 261 occurrence points and 40 environmental variables
MaxEnt model was used to predict the potential distribution of Castanea mollissima. Environmental factors affecting the distribution of Castanea mollissima were also determined. The application scope was determined by comparing the potential distribution of Castanea mollissima with the national soil and water loss areas.[Results] Five environmental variables
including annual precipitation
annual mean temperature
topsoil pH value
mean diurnal range and temperature seasonality
contributed significantly to the distribution of suitable areas of Castanea mollissima
and the cumulative contribution rate was more than 83%. At the same time
Castanea mollissima likes water but is afraid of water logging
so it is suitable for growing in acid soils. The potential suitable areas were 2.92×106 km2
accounting for 30.46% of total nation land areas. The highly suitable areas were mainly in the northeast of Sichuan Province and Yunnan Province
most areas of Hubei Province
Hu'nan Province and Jiangxi Province
and some areas of Shaanxi Province
He'nan Province
Anhui Province
Zhejiang Province and Shandong Province. The distribution of moderately suitable areas expanded outward with the centre of highly suitable areas.[Conclusion] Compared with the national key prevention areas and key control areas of soil and water loss in China
Castanea mollissima can be selected as economic tree species for soil and water conservation in other areas
except for Qinghai-Tibet region
the northwest region and the northeast regions. The potential distribution prediction of Castanea mollissima based on MaxEnt model has expanded the understanding of the distribution of ecological characteristics of Chinese Castanea mollissima
and provided a scientific basis for the selection of tree species in the functional areas of soil and water conservation.
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