Spatiotemporal dynamics of ecological plantations of Camellia sinensis var. assamica: Synergistic effects of climate change and policy constraints in Yunnan, China
Peirou Yang , Zhipeng Zhao , Lisha Nie , Weiheng Xu , Yunhan Li , Leiguang Wang
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引用次数: 0
Abstract
Camellia sinensis var. assamica (C. assamica) is a variety widely used in commercial tea production across Yunnan Province, China. However, research on the potential distribution of over-a-century-old ecological tea plantations of C. assamica remains limited. Exploring this distribution can offer novel insights for the high-quality and sustainable development of the local tea industry. In this study, an ENMeval-optimized MaxEnt model was employed, incorporating policy and legal constraints to determine the potential distribution of C. assamica ecological tea plantations in Yunnan by integrating both natural and human factors. The Jackknife method was utilized to identify key environmental drivers. Finally, potential spatial changes in ecological tea plantations under climate change scenarios were quantified, revealing future distribution trends. The results reveal: (1) The potential distribution of ecological tea plantations is located in the western, southwestern, and southern parts of Yunnan, concentrated in the southwest. Over time, the overall potential distribution zone shifts northward. (2) Climate change has significantly impacted the distribution of ecological tea plantations. With climate change, the suitability levels of the region fluctuate across different periods. (3) Temperature seasonality (Bio4) and mean diurnal air temperature range (Bio2) were identified as the most important factors influencing the distribution of ecological tea plantations for C. assamica. The fluctuations of these two climatic factors have had a significant impact on the stability of ecological tea plantations. The results of this study provide new insights into the construction of ecological tea plantations and the sustainable development of local tea estates.
茶茶(Camellia sinensis var. assamica)是中国云南省广泛用于商业茶生产的品种。然而,对百年老茶树生态茶园潜在分布的研究仍然有限。探索这种分布,可以为当地茶业的高质量和可持续发展提供新的见解。本研究采用enmeval优化的MaxEnt模型,结合政策和法律约束,综合自然和人为因素,确定云南茶树生态茶园的潜在分布。叠刀法用于识别关键的环境驱动因素。最后,对气候变化情景下生态茶园的潜在空间变化进行了量化,揭示了未来的分布趋势。结果表明:(1)生态茶园的潜在分布在滇西、滇西南和滇南,集中在滇西南;随着时间的推移,整个潜在分布区域向北移动。(2)气候变化对生态茶园的分布有显著影响。随着气候变化,该地区的适宜性水平在不同时期波动。(3)温度季节性(Bio4)和平均日气温差(Bio2)是影响茶树生态茶园分布的最重要因素。这两个气候因子的波动对生态茶园的稳定性产生了显著的影响。研究结果为生态茶园建设和地方茶园可持续发展提供了新的思路。
期刊介绍:
Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.