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应用生态学报 ›› 2005, Vol. 16 ›› Issue (9): 1650-1654.

• 研究论文 • 上一篇    下一篇

沈阳城市森林小气候特征的研究

徐文铎1, 何兴元1, 陈玮1,2, 刘常富1,3, 孙雨1   

  1. 1. 中国科学院沈阳应用生态研究所, 沈阳 110016;
    2. 中国科学院研究生院, 北京 100039;
    3. 沈阳农业大学林学院, 沈阳 110161
  • 收稿日期:2005-02-24 修回日期:2005-05-10 出版日期:2005-09-15 发布日期:2005-09-15
  • 通讯作者: 何兴元
  • 基金资助:
    国家自然科学基金重点项目(90411019)、中国科学院知识创新工程重要方向项目(C03DQ-YCXZY0501)和中国科学院知识创新工程重大资助项目.

Microclimate characters of urban forest in Shenyang City

XU Wenduo1, HE Xingyuan1, CHEN Wei1,2, LIU Changfu1,3, SUN Yu 1   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. (Graduate) School of Chinese Academy of Sciences, Beijing 100039, China;
    3. Shenyang Agricultural University, Shenyang 110161, China
  • Received:2005-02-24 Revised:2005-05-10 Online:2005-09-15 Published:2005-09-15

摘要: 研究了沈阳城市森林不同生长期小气候温湿日变化特征.结果表明,城市森林不同生长期气温日变化趋势是早晨气温最低、午后气温最高,但受森林生态环境的影响,最高峰比太阳辐射峰值迟滞约2 h.一年四季气温日变幅为森林停止生长期(休眠期)>生长季前期>生长季后期>生长季中期.森林生长季前期、中期、后期土壤温度为白天高于夜间,而停止生长期(休眠期)为夜间高于白天.不同生长期土温日振幅为上层(20 cm)>中层(40 cm)>下层(80 cm),而同一层不同生长期的土温日振幅为土层深20 cm时,生长季前期>生长季后期>停止生长期(休眠期)>生长季中期;土层深>40 cm(80 cm)时,生长季前期>停止生长期(休眠期)>生长季后期>生长季中期.城市森林空气相对湿度日变化与气温和地温日变化则夜间的空气相对湿度高于白天,但不同生长期相对湿度值日变化为生长季中期>生长季后期>停止生长期(休眠期)>生长季前期.

关键词: 沈阳市, 城市森林, 小气候特征

Abstract: This paper analyzed the diurnal changes of the temperature and humidity in Shenyang urban forest during its different growth stages.The results showed that air temperature was the lowest in the morning and the highest at noon.The highest peak point of air temperature lagged behind that of solar radiation about 2 hours,due to the influence of forest environment.The annual air temperature amplitude was in order of stop-growth period (dormancy stage) (DS)>prophase of growth season (PGS)>anaphase of growth season (AGS)>medium-term of growth season (MGS).Soil temperature of PGS,MGS and AGS at daytime was higher than that at night,while that of DS was in reverse.The daily soil temperature amplitude at different growth stages was in order of upper soil layer (20 cm)>medium soil layer (40 cm)>lower soil layer(80 cm),while the diurnal soil temperature amplitude in the same soil layer was in order of PGS>AGS>DS>MGS (20 cm) and PGS>DS>AGS>MGS (80 cm).The diurnal change of relative humidity was reverse to that of air- and soil temperature,which was higher at night than at daytime,and was in order of MGS>AGS>DS>PGS.

Key words: Shenyang City, Urban forest, Microclimate character

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