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中国农学通报

中国农学通报 ›› 2020, Vol. 36 ›› Issue (16): 96-100.doi: 10.11924/j.issn.1000-6850.casb19020067

所属专题： 资源与环境； 农业生态

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

覆盖生态木屑对城市公园土壤温湿度的影响

侯世星1(), 李维1, 孙玉红1, 胡娜1, 温俊宝2,*()   

  1. 1.北京市玉渊潭公园管理处,北京 100142
    2.北京林业大学林学院,北京 100083
  • 收稿日期:2019-02-27 修回日期:2019-09-19 出版日期:2020-06-05 发布日期:2020-05-20
  • 通讯作者: 温俊宝
  • 基金资助:
    中央高校基本科研业务费专项资金“覆盖生态木屑对樱花根系分布特征及根癌病的影响”;北京市公园管理中心科技课题项目“不同土壤覆盖方式对樱花生长发育的影响”

Covering Ecological Sawdust: Effects on Soil Temperature and Humidity in Urban Park

Hou Shixing1(), Li Wei1, Sun Yuhong1, Hu Na1, Wen Junbao2,*()   

  1. 1.The Administration of Yuyuantan Park, Beijing 100142
    2.College of Forestry, Beijing Forestry University, Beijing 100083
  • Received:2019-02-27 Revised:2019-09-19 Online:2020-06-05 Published:2020-05-20
  • Contact: Wen Junbao

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摘要：

为实现绿化垃圾的循环利用,量化评估覆盖生态木屑对土壤表层温湿度的影响。利用土壤温湿度计定期测定土壤表层温湿度持续1年。结果表明,冬季铺设生态木屑具有良好的保温保湿效果,不铺设木屑土壤含水率迅速下降到10%以下,铺设生态木屑15~20 cm后整个冬季土壤含水率都保持在16%以上,后者土壤温度比前者土壤温度高2℃以上。夏季铺设生态木屑5~10 cm的样树,含水率低于不铺生态木屑的对照组和其他试验组,但对温度的影响并不明显。冬季覆盖生态木屑对土壤表层具有明显的保温保湿效果,且覆盖生态木屑越厚保温保湿效果越显著;而夏季覆盖生态木屑的最佳厚度为5~10 cm,覆盖此厚度的生态木屑既可以起到海绵体吸收多余水分的作用,又不会因为覆盖生态木屑后树冠与根系间的温差增大导致的植物生理性缺水。因此,建议城市公园铺设生态木屑的厚度为5~10 cm。

关键词: 玉渊潭公园, 樱花, 有机覆盖物, 土壤温湿度, 生态木屑

Abstract:

To achieve the recycling of green garbage, evaluate quantitatively the effects of covering ecological sawdust on soil surface temperature and humidity, we measured the soil surface temperature and humidity by soil hygrometer for 1 year. The results showed that: laying ecological sawdust in winter could have good heat and moisture preservation effect, the soil moisture content without laying sawdust dropped rapidly to less than 10%, and the soil moisture content of the whole winter after laying ecological sawdust of 15-20 cm kept above 16%, and the soil temperature of the latter was 2℃ higher than that of the former; in summer, the moisture content of the sample trees with ecological sawdust of 5-10 cm was lower than that of the control group and other experimental groups without ecological sawdust, but the effects on temperature was not obvious; in winter, covering ecological sawdust had obvious heat and moisture preservation effect on soil surface, and the thicker the ecological sawdust, the more significant the effect on heat and moisture preservation; in summer, the optimal thickness of ecological sawdust was 5-10 cm, which could not only play the role of spongy body to absorb excess water, but also avoid physiological water shortage of plants due to the increase of temperature difference between canopy and root system after covering ecological sawdust. Therefore, we suggest the thickness of ecological sawdust in urban parks should be 5-10 cm.

Key words: Yuyuantan Park, cherry, organic covering, soil temperature and humidity, ecological sawdust

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