植物生态学报 ›› 2024, Vol. 48 ›› Issue (4): 445-458.DOI: 10.17521/cjpe.2023.0218  cstr: 32100.14.cjpe.2023.0218

• 研究论文 • 上一篇    下一篇

气候变化对巨柏适宜生境分布的潜在影响和预测

吴茹茹1,2, 刘美珍1,3,*(), 谷仙4, 常馨月5, 郭立月1, 蒋高明1,3, 祁如意6   

  1. 1中国科学院植物研究所植被与环境变化国家重点实验室, 北京 100093
    2中国科学院大学研究生院, 北京 100049
    3中国科学院大学资源与环境学院, 北京 100049
    4河北中医药大学药学院, 石家庄 050200
    5西藏自治区生态环境厅生态环境科学研究院, 拉萨 850000
    6西藏农牧学院资源与环境学院, 西藏林芝 860000
  • 收稿日期:2023-07-28 接受日期:2023-12-21 出版日期:2024-04-20 发布日期:2024-05-11
  • 通讯作者: * (liumzh@ibcas.ac.cn)
  • 基金资助:
    国家自然科学基金(32071604);国家科技基础资源调查专项(2019FY202300)

Prediction of suitable habitat distribution and potential impact of climate change on distribution patterns of Cupressus gigantea

WU Ru-Ru1,2, LIU Mei-Zhen1,3,*(), GU Xian4, CHANG Xin-Yue5, GUO Li-Yue1, JIANG Gao-Ming1,3, QI Ru-Yi6   

  1. 1State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
    2School of Graduate, University of Chinese Academy of Sciences, Beijing 100049, China
    3College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
    4College of China Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
    5Xizang Research Academy of Eco-environmental Sciences, Xizang Autonomous Region Department of Ecology and Environment, Lhasa 850000, China
    6Resource and Environment College, Tibet Agricultural & Animal Husbandry University, Nyingchi, Xizang 860000, China
  • Received:2023-07-28 Accepted:2023-12-21 Online:2024-04-20 Published:2024-05-11
  • Contact: * (liumzh@ibcas.ac.cn)
  • Supported by:
    National Natural Science Foundation of China(32071604);Special Foundation for National Science and Technology Basic Resources Investigation of China(2019FY202300)

摘要:

随着全球气候变化, 植物的生长和生存模式均受到影响。预测气候变化下物种潜在的地理分布范围变化, 是判断该物种如何响应气候变化的重要手段, 有助于制定科学的物种保护策略。巨柏(Cupressus gigantea)是雅鲁藏布江中游末段及主要支流尼洋河近江河段河岸带的特有物种, 也是国家一级重点保护植物, 其分布范围主要在朗县至米林市丹娘乡的雅鲁藏布江两岸及尼洋河河谷的巨柏公园, 生存受到区域自然资源开发和气候变化的明显影响。该研究基于巨柏当前地理分布数据、地形因子、当前及未来气候条件下的环境因子数据, 利用最大熵(MaxEnt)模型、广义线性模型(GLM)和广义相加模型(GAM)与ArcGIS空间分析分别对西藏当前及未来2081-2100年2种气候变化情景(高排放模式SSP5-8.5和低排放模式SSP1-2.6)下的巨柏生境适宜性进行模拟分析。研究结果表明: (1)巨柏的潜在地理分布范围较狭窄, 适生区集中分布在加查县至米林市的雅鲁藏布江两岸和米林市至工布江达县的尼洋河两岸, 在隆子县、贡嘎县、错那县等地呈零星分布; (2)对巨柏潜在地理分布影响较大的环境因子有最冷季平均气温、温度季节性、昼夜温差月均值和海拔, 适宜范围分别为-1.62-2.14 ℃、565.29-603.78、11.66-12.97 ℃和2 898-3 550 m; (3)三种模型模拟结果均表明与潜在地理分布面积相比, 未来气候变化情景下巨柏的总适生区面积呈现扩大的趋势, 且SSP5-8.5情景下巨柏适生区面积的扩增程度明显高于SSP1-2.6气候情景; (4)与当前适生区质心相比, 未来情景下的巨柏适生区质心整体呈向西南偏移的趋势, 巨柏的分布区也呈向藏西南雅鲁藏布江中游方向较高海拔迁移的趋势。该研究探究了巨柏生长的关键影响因子及巨柏对气候的响应状况, 对巨柏保护具有十分重要的科学意义和实践指导价值。

关键词: 气候变化, 巨柏, 潜在分布区模拟, 最大熵模型, 广义线性模型, 广义相加模型, 适生分析

Abstract:

Aims The growth and survival patterns of species might be affected by global climate change. Predicting changes of the potential range of geographic distribution for a certain species under climate change is important to understand the response of the species to climate change, and helps to formulate scientific conservation strategies for the species. Cupressus gigantea is an endemic species of both the Yarlung Zangbo River and one of the first class National Protection Wild Plants. However, this species faces dual pressures from resource development and climate change. We here research the distribution pattern on the both side of the Yarlung Zangbo River from Nang County to Danniang Town of Nyingchi.
Methods In this investigation, we simulated the habitat suitability of C. gigantea under current and two climate change scenarios from 2081 to 2100 (SSP5-8.5: high emission scenario and SSP1-2.6: low emission scenario) in Xizang by using maximum entropy models (MaxEnt), generalized liner models (GLM) and generalized additive models (GAM) with ArcGIS spatial analysis based on the current actual geographical distribution information. All the data were obtained by field investigation, with topographic factor variables and environmental data being collected or predicted under current and future climatic conditions, respectively.
Important findings The results of the study show that: (1) The potential geographical distribution of C. gigantea was narrow, with the suitable distribution areas beings concentrated in Gyaca County to Gongbo’gyamda County, through which the Yarlung Zangbo River in Xizang. And others were scatterly distributed in Lhünzê County, Gonggar County, and Cona County in eastern Xizang. (2) Environmental factors which had significant impacts on the potential geographic distribution of C. gigantea were the average air temperature of the coldest quarter, temperature seasonality, mean of monthly (maximum temperature-minimum temperature), and altitude with suitable ranges of -1.62-2.14 °C, 565.29-603.78, 11.66-12.97 °C and 2 898-3 550 m, respectively. (3) The general suitable area of C. gigantea under future climate change scenarios tended to expand compared with the potential geographic distribution area, and its expansion of the suitable area range of C. gigantea under the SSP5-8.5 climate scenario was much higher than the SSP1-2.6 climate scenario. (4) The center of mass in the future scenario displayed an overall trend to the southwest, and the distribution area of C. gigantea also showed a trend to the southwest of the middle reaches of the Southwest Yarlung Zangbo River. Our findings provided the scientific significance and practical guidance for investigating key environmental factors for the growth, restoration and conservation of C. gigantea.

Key words: climate change, Cupressus gigantea, potential distribution area modeling, maximum entropy model (MaxEnt), generalized liner model (GLM), generalized additive model (GAM), suitable analysis