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中国农学通报 ›› 2020, Vol. 36 ›› Issue (14): 74-79.doi: 10.11924/j.issn.1000-6850.casb18120114

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

深圳城市绿地土壤入渗性能及影响因素研究

黄晖1,2, 毕舒贻1,2, 字肖萌3, 廖耿强4, 温暖玲1, 茹正忠1,2()   

  1. 1 深圳市真和丽生态环境股份有限公司,广东深圳 518052
    2 深圳市真和丽生态环境科技研发中心,广东深圳 518052
    3 中国科学院西双版纳热带植物园/公共技术服务中心/生物地球化学实验室,昆明 650023
    4 龙岗区城市管理行政执法局,广东深圳 518116
  • 收稿日期:2018-12-27 修回日期:2019-03-20 出版日期:2020-05-15 发布日期:2020-05-20
  • 通讯作者: 茹正忠
  • 作者简介:黄晖,男,1992年出生,江西赣州人,工程师,硕士,研究方向:海绵城市技术研发与推广。通信地址:518000 深圳市南山区海大创意园东座北门4楼,E-mail:huanghui.hdsz@foxmail.com。
  • 基金资助:
    深圳市科技创新委员会项目“重20170416城市绿地系统低影响开发关键技术研发”(JSGG20170412145935322)

Urban Green Spaces in Shenzhen: Soil Infiltration Capacity and Its Influencing Factors

Huang Hui1,2, Bi Shuyi1,2, Zi Xiaomeng3, Liao Gengqiang4, Wen Nuanling1, Ru Zhengzhong1,2()   

  1. 1 Shenzhen Zhenheli Ecology & Environment Co., Ltd, Shenzhen Guangdong 518052
    2 Shenzhen Zhenheli Ecology & Environment Research Center, Shenzhen Guangdong 518052
    3 Laboratories for Biogeochemistry, Public Technology Service Center, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650032
    4 Urban Administrative and Law Enforcement Bureau of Longgang District, Shenzhen Guangdong 518116
  • Received:2018-12-27 Revised:2019-03-20 Online:2020-05-15 Published:2020-05-20
  • Contact: Ru Zhengzhong

摘要:

研究深圳市城市绿地土壤水分入渗性能及其相关影响因素,以期为海绵城市建设,深圳市城市绿地水土保持提供参考。针对绿地不同植被类型(草地、乔木、灌木)及不同土层深度(0~30 cm、30~60 cm),利用Guelph入渗仪现场测定土壤饱和导水率,并分析土壤理化性质对土壤水分入渗的影响。结果表明:深圳绿地土壤入渗性能较差,饱和导水率不良及以下等级高达63.42%;乔木上层土壤及灌木上层土壤饱和导水率较高,均显著高于各自下层土壤饱和导水率(P<0.05);绿地土壤砂粒含量较高,平均达52%以上,土壤容重偏高,平均为1.62 g/cm 3。土壤质地可显著影响土壤入渗特性,砂粒含量越高,土壤渗透性越好(P<0.01),容重、含水率、砾石含量与土壤饱和导水率显著负相关(P<0.05)。深圳绿地土壤入渗性能较差,未来可考虑降低压实程度、提高土壤砂粒含量来改良土壤渗透性。

关键词: 城市绿地, 土壤入渗, 土壤物理特性, 深圳

Abstract:

Studying soil infiltration capacity and its influencing factors in urban green spaces of Shenzhen can provide references for the construction of sponge city and soil-water conservation in urban green spaces. Aiming at different vegetation types (woody, shrub, lawn) and different soil layers (0-30 cm, 30-60 cm) in urban green spaces, we analyzed the impacts of soil physicochemical properties on soil moisture, by determining the soil saturated hydraulic conductivity (Kfs) with a Guelph infiltrometer. The results showed that: the soil infiltration capacity of Shenzhen green space was poor, the grades of poor Kfs and below were up to 63.42%; the Kfs of the upper soil in woody and shrub was relatively high, which was significantly higher than that of the Kfs of the subsoil (P<0.05); both bulk density and sand particle contents of green spaces were quite high with 1.62 g/cm 3 and 52%, respectively; the soil texture had a significant effect on Kfs, and there was a positive correlation between sand particle contents and Kfs (P<0.01); soil bulk density, initial moisture content and gravel content showed a significantly negative correlation with Kfs (P<0.05). In conclusion, the soil infiltration capacity in urban green spaces of Shenzhen is very poor, and reducing the compaction degree and increasing sand content could improve soil infiltration.

Key words: urban green spaces, soil infiltration, soil physical characteristics, Shenzhen

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