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羊草物候特征对气候因子的响应

李荣平1;周广胜1;王玉辉1;韩喜2   

  1. 1中国气象局沈阳大气环境研究所, 沈阳 110016;2内蒙古锡林浩特市畜牧气象研究所, 锡林浩特 026000
  • 收稿日期:2005-06-20 修回日期:2005-09-22 出版日期:2006-03-08 发布日期:2006-03-08

Phenological responses of Leymus chinesis to climate factors

LI Rongping1;ZHOU Guangsheng1;WANG Yuhui1;HAN Xi2   

  1. 1Institute of Atmospheric Environment of China Meteorological Administration,Shenyang 110016, China;2Institute of Pastoral Meteorological of Inner Mongolia,Xilinhaote 026000, China

  • Received:2005-06-20 Revised:2005-09-22 Online:2006-03-08 Published:2006-03-08

摘要: 研究了内蒙古高原典型草原优势植物羊草的物候特征及其对气候因子的响应,结果表明,3~4月的平均温度与羊草的展叶显著相关,温度每升高1℃,羊草展叶提前4.35d;日照时数与羊草枯黄期显著相关,随着日照时数增加,羊草展叶期推后,枯黄期提前;4~10月平均风速与羊草生长季长相关,平均风速越大,生长期越长。

关键词: 杉木间伐材, 压缩密化, 物理力学性能, 微观结构

Abstract: This paper studied the phenological characters of Leymus chinensis,a dominant species in Inner Mongolia steppe,and its responses to climate factors.The results showed that the leafing of L.chinensis was significantly correlated with the average temperature from March to April,and would be advanced by 4.35 days when the temperature raised 1 ℃.Leaf coloring had a significant correlation with sunlight hours.With increasing sunlight hours,the leafing date of L.chinensis would be deferred,while the coloring date would be advanced.The growth season length of L.chinensis was closely correlated with the average wind speed from April to October.The stronger the average wind speed,the longer the growth season.

Key words: Chinese fir thinning wood, Compression, Physical-mechanical quality, Microstructure