中国地理科学 ›› 2018, Vol. 28 ›› Issue (3): 482-494.doi: 10.1007/s11769-018-0953-7

• 论文 • 上一篇    下一篇

Effects of Urbanization, Soil Property and Vegetation Configuration on Soil Infiltration of Urban Forest in Changchun, Northeast China

WANG Peijiang1,2, ZHENG Haifeng1, REN Zhibin1, ZHANG Dan1, ZHAI Chang1,2, MAO Zhixia1,2, TANG Ze1,2, HE Xingyuan1,2   

  1. 1. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2017-01-09 修回日期:2017-05-02 出版日期:2018-06-27 发布日期:2018-04-27
  • 通讯作者: HE Xingyuan.E-mail:hexingyuan196209@163.com E-mail:hexingyuan196209@163.com
  • 基金资助:

    Under the auspices of Excellent Young Scholars of Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (No. DLSYQ 13004), Chinese Academy of Sciences/State Administration of Foreign Experts Affairs International Partnership Program for Creative Research Teams (No. KZZD-EW-TZ-07-09), Strategic Priority Research Program of Chinese Academy of Sciences (No. KFZD-SW-302-03)

Effects of Urbanization, Soil Property and Vegetation Configuration on Soil Infiltration of Urban Forest in Changchun, Northeast China

WANG Peijiang1,2, ZHENG Haifeng1, REN Zhibin1, ZHANG Dan1, ZHAI Chang1,2, MAO Zhixia1,2, TANG Ze1,2, HE Xingyuan1,2   

  1. 1. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-01-09 Revised:2017-05-02 Online:2018-06-27 Published:2018-04-27
  • Contact: HE Xingyuan.E-mail:hexingyuan196209@163.com E-mail:hexingyuan196209@163.com
  • Supported by:

    Under the auspices of Excellent Young Scholars of Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (No. DLSYQ 13004), Chinese Academy of Sciences/State Administration of Foreign Experts Affairs International Partnership Program for Creative Research Teams (No. KZZD-EW-TZ-07-09), Strategic Priority Research Program of Chinese Academy of Sciences (No. KFZD-SW-302-03)

摘要:

Urban forest soil infiltration, affected by various factors, is closely related with surface runoff. This paper studied the effect of urban forest types, vegetation configuration and soil properties on soil infiltration. In our study, 191 typical plots were sampled in Changchun City, China to investigate the soil infiltration characteristics of urban forest and its influencing factors. Our results showed that the steady infiltration rates of urban forest soil were highly variable. High variations in the final infiltration rates were observed for different vegetation patterns and compaction degrees. Trees with shrubs and grasses had the highest infiltration rate and trees with bare land had the lowest infiltration rate. In addition, our results showed that the soil infiltration rate decreased with an increase in the bulk density and with a reduction in the soil organic matter content and non-capillary porosity. The soil infiltration rate also had significantly positive relationships with the total porosity and saturated soil water content. Urban soil compaction contributed to low soil infiltration rates. To increase the infiltration rate and water storage volume of urban forest soil, proper techniques to minimize and mitigate soil compaction should be used. These findings can provide useful information for urban planners about how to maximize the water volume of urban forest soil and decrease urban instantaneous flooding.

关键词: soil infiltration, urbanization gradients, urban forest, plant communities, soil property

Abstract:

Urban forest soil infiltration, affected by various factors, is closely related with surface runoff. This paper studied the effect of urban forest types, vegetation configuration and soil properties on soil infiltration. In our study, 191 typical plots were sampled in Changchun City, China to investigate the soil infiltration characteristics of urban forest and its influencing factors. Our results showed that the steady infiltration rates of urban forest soil were highly variable. High variations in the final infiltration rates were observed for different vegetation patterns and compaction degrees. Trees with shrubs and grasses had the highest infiltration rate and trees with bare land had the lowest infiltration rate. In addition, our results showed that the soil infiltration rate decreased with an increase in the bulk density and with a reduction in the soil organic matter content and non-capillary porosity. The soil infiltration rate also had significantly positive relationships with the total porosity and saturated soil water content. Urban soil compaction contributed to low soil infiltration rates. To increase the infiltration rate and water storage volume of urban forest soil, proper techniques to minimize and mitigate soil compaction should be used. These findings can provide useful information for urban planners about how to maximize the water volume of urban forest soil and decrease urban instantaneous flooding.

Key words: soil infiltration, urbanization gradients, urban forest, plant communities, soil property