白扦径向生长对气候变化的响应  

Response of Radial Growth of Piceameyeri to Climate Change

作　　者：王恒 许建娇 明财道 陶怡[3] WANG Heng;XU Jianjiao;MING Caidao;TAO Yi(College of Forestry,Agricultural University of Hebei,Baoding 071000,Hebei,China;Northeast Forestry University,Harbin 150000,Heilongjiang,China;Experimental Center of Tropical Forestry,Chinese Academy of Forestry,Pingxiang 532600,Guangxi,China)

机构地区：[1]河北农业大学林学院,河北保定071000 [2]东北林业大学,黑龙江哈尔滨150000 [3]中国林业科学研究院热带林业实验中心,广西凭祥532600

出　　处：《桉树科技》2023年第3期54-59,共6页Eucalypt Science & Technology

基　　金：“十四五”国家重点研发计划项目(2023YFE0105100)。

摘　　要：为研究白扦径向生长在气候变化情景中的响应及动态,以河北省承德市丰宁地区的白扦天然林为研究对象,分析其径向生长的特点,基于气象网站(https://climexp.knmi.nl/)上CRU格点数据(0.5°×0.5°),分析白扦径向生长与月温度、降水及帕尔默干旱指数(PDSI)的相关关系。结果表明:承德市丰宁地区的年平均气温呈极显著增加趋势,增加速率为0.224℃·10年^(-1),年总降水量呈不显著下降趋势;该区白扦的径向生长无显著增加;白扦年轮宽度与当年7月、8月降水量分别呈极显著、显著正相关,与当年7—9月PDSI呈极显著正相关,与当年7月均温、6月及9月均最高温呈显著负相关。由此推断在快速升温但无显著降水增加的条件下,干旱胁迫影响丰宁地区白扦径向生长。In order to explore the response of the radial growth of Picea meyeri in the climate change scenario and its change dynamics,the P.meyeri forest in Fengning area of Chengde City,Hebei Province was selected.The radial growth was measured and the relationship between tree growth and climate factors such as monthly temperature,precipitation and PDSI download from the meteorological website(https://climexp.knmi.nl/).The results showed that with the rate of 0.224·10 year^(-1) the average annual temperature in Fengning area of Chengde City has been increasing significantly,while the total precipitation has been decreasing;the radial growth of P.meyeri has not increased significantly;the radial growth of P.meyeri was significantly positively correlated with precipitation in July and August,positively correlated with PDSI from July to September,and negatively correlated with mean temperature in July,maximum temperature in June and September.It is concluded that drought stress affects the radial growth of P.meyeri under the background of rapid warming without no significant precipitation increase in Fengning area.

关 键 词：白扦 径向生长 气候响应 干旱指数 

分 类 号：Q948.112[生物学—植物学]