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中国农学通报 ›› 2015, Vol. 31 ›› Issue (16): 14-18.doi: 10.11924/j.issn.1000-6850.casb15010065

所属专题: 园艺

• 林学 园艺 园林 • 上一篇    下一篇

新优树种纳塔栎秋色叶变化及其对环境的适应性

许晓波   

  1. (上海市绿化管理指导站,上海 200020)
  • 收稿日期:2015-01-12 修回日期:2015-05-18 接受日期:2015-05-08 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 许晓波
  • 基金资助:
    上海市农委重点攻关项目“城乡一体化建设中适宜树种筛选应用”[沪农科攻字(2011)第1-7号]。

Variation of Autumn-color Leaf and the Adaptability to Environment of Quercus nuttallii

Xu Xiaobo   

  1. (Shanghai Administrative and Directive Station for Afforestation, Shanghai 200020)
  • Received:2015-01-12 Revised:2015-05-18 Accepted:2015-05-08 Online:2015-07-27 Published:2015-07-27

摘要: 为探讨新优树种纳塔栎在城市绿地中的秋季表现,选择城区内的纳塔栎植株为研究对象,记录植物秋季叶色变化的过程,同时对叶绿素、类胡萝卜素、花青素等含量进行测定,从叶片色素、气候因子进行典型相关分析和回归分析。结果表明:纳塔栎在城区绿地中的秋季变色期约为30天;叶绿素a和花青素含量的高低决定着叶色;平均温度对叶色变化影响最大,并与叶绿素a呈极显著正相关、与花青素呈极显著负相关。平均温度(X1)和花青素(X2)含量之间的一元非线性回归模型为X2=39.184077/[1+EXP(-7.317131+0.734963X1)],相关系数为0.9523(P<0.001),通过平均温度的变化可以初步推断纳塔栎秋色叶变化情况。

关键词: 农业气象自动观测站, 农业气象自动观测站, Van Genuchten模型, 土壤水分特征曲线, 分析

Abstract: In order to study the behavior of Quercus nuttallii during the autumn in city green land, the variation process of its autumn-color leaf was recorded, and the contents of chlorophyll, carotenoid and anthocyanin were measured. The main factors of climate and environment which affected the autumn-color leaf were analyzed. It showed that the whole leaf color turning phase was 30 days. The main pigments caused the variation of autumn-color leaf were chlorophyll a and anthocyanin. The average temperature had great effect on autumn-color leaf, and had a significantly positive correlation with chlorophyll a, but a significantly negative correlation with anthocyanin. The simple linear regression model between the average temperature and anthocyanin was X2=39.184077/[1 EXP(-7.317131 0.734963X1)], the correlation coefficient was 0.9523(P<0.001). Therefore, the changes of autumn-color leaf can be inferred by the change of average temperature.