Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, Yunnan, China.
College of Landscape Architecture, Nanjing Forestry University, Nanjing, Jiangsu, China.
PeerJ. 2022 Aug 2;10:e13847. doi: 10.7717/peerj.13847. eCollection 2022.
Climate change will significantly affect the distribution area of species. Through establishing distribution model, we can simulate the current and future potential distribution range and provide reference for the introduction and cultivation planning of rare or economic plants. , endemic to Yunnan Province of China, is the strongest woody bamboo in the world. In the present study, the MaxEnt model was performed to simulate the distribution of different types of in China and neighboring countries or regions. The results suggested that the suitable distribution range of "straight type", the main type for cultivation and utilization, was 8°-30°N and 73°-122°E under the current climate conditions, while the potential distribution range of "bending type" was 6°-31°N and 79°-109°E. The two most key climate variables associated with distribution of "straight type" were "Temperature Annual Range" with 36.6% contribution rate and "Temperature Seasonality" (32.4%), while "Isothermality" (47.8%) and "Precipitation of Driest Month" (24.8%) for "bending type". Under different climate change scenarios (SSP1-2.6, SSP5-8.5) and periods (2050, 2090), the potential distribution area of the "straight type" were apparently different, indicating that the distribution area of will be affected significantly by climate changes in the future. Our findings would be not only beneficial to understanding limiting factors for natural distribution of , but also helpful for further germplasm conservation, introduction and cultivation planning of this rare woody bamboo.
气候变化将显著影响物种的分布范围。通过建立分布模型，我们可以模拟当前和未来潜在的分布范围，为珍稀或经济植物的引种和栽培规划提供参考。滇楠，产于中国云南省，是世界上最强壮的木质竹种。本研究利用 MaxEnt 模型模拟了中国及周边国家或地区不同类型滇楠的分布。结果表明，在当前气候条件下，主要栽培利用类型的“直型”滇楠适宜分布范围为 8°-30°N 和 73°-122°E，而“弯型”滇楠的潜在分布范围为 6°-31°N 和 79°-109°E。与“直型”滇楠分布最相关的两个关键气候变量是贡献率为 36.6%的“年温差”和 32.4%的“温度季节性”，而“均一性”（47.8%）和“最干月降水量”（24.8%）则与“弯型”滇楠相关。在不同的气候变化情景（SSP1-2.6、SSP5-8.5）和时期（2050 年、2090 年）下，“直型”滇楠的潜在分布区明显不同，表明未来气候变化将显著影响滇楠的分布区。本研究结果不仅有助于了解滇楠自然分布的限制因素，还有助于进一步保护该珍稀木质竹种的遗传资源、引种和栽培规划。
