摘要
研究‘赤云相思’(Acacia mangium×A. auriculiformis (chiyun))幼林的季节生长动态、生长指标与气象因子的相关性,结果表明:‘赤云相思’幼林年生长节律符合Logistic曲线特征,所建立树高、地径与生长时间的回归模型决定系数(R^2)均大于0.98,Logistic曲线方程对‘赤云相思’树高和地径年生长节律具有良好的拟合效果;依据Logistic曲线上两个曲率峰值所在点可准确将‘赤云相思’年生长进程划分为:渐增期、速生期和缓增期,其中速生期植株的树高和地径生长量分别占全年生长总量的87.99%和72.25%;相关性分析表明,树高和地径的生长与日均气温、日最高气温、日最低气温及日照时数存在极显著的正相关,与白天降水量呈显著正相关。
The correlation between seasonal growth dynamics, growth indexes of Acacia mangium× A. auriculi- formis （chiyun） and meteoMogical factors were investigated and analyzed. Results showed that the growth pat- terns were in accord with the Logistic curve. Based on the equation, the fitting models of tree height, ground di- ameter and growth phases were established, and the coefficients of determination （R2） were more than 0.98. The Logistic curve equation had a good fitting effect on the tree height, ground diameter and annual growth rhythm of A. mangium ×A. auriculiformis （chiyun） . According to the two peaks of curvature on the Logistic curve, the annual growth process ofA. mangium×A. auriculiformis （chiyun） could be accurately divided into gradually increasing period, fast-growing period and slow-increasing period, and in the fast-growing period, the growth increments of tree height and ground diameter accounted for 87.99% and 72.25% of the total annual growth, respectively. The cowelation analysis indicated that the growth of tree height and ground diameter had extremely significant positive correlation with the daily average temperature, daily highest temperature, daily lowest temperature and hours of sunshine, and a significant positive correlation with daytime precipitation.
作者
曹艳云
何琴飞
申文辉
郝海坤
蒙芳
谭长强
郑贤
彭玉华
CAO Yan-yun1, HE Qin-fei1, SHEN Wen-hui1, HAO Hai-kun1, MENG Fang1, TAN Zhang-qiang1, ZHENG Xian2 PENG Yu-hua1(1. Guangxi Forestry Research Institute, Central South Key Laboratory of Fast-gTowing Timber Cultivation of Forestry MinistiT of China, Guangxi Key Laboratory of Superior Timber Trees Resouree Cultivation, Nanning 530002, China; 2. Nanning Meteorological Bureau, Nanning, Guangxi530028, China)
出处
《广西林业科学》
2018年第3期263-267,共5页
Guangxi Forestry Science
基金
广西林科院基本科研业务费专项(林科201601号)
自治区主席科技基金项目(1517-6)
广西林业技术推广示范项目(桂林科发[2018]4)
南宁市本级科学研究与技术开发计划项目(20172130-1)
关键词
赤云相思
生长节律
Logistic曲线
气象因子
Acacia mangium x A. auriculiformis （chiyun）
growth rhythm
Logistic curve
meteorologi-cal factor
