摘要
根据湖北城市地形,对2个山地城市(恩施、十堰)、3个丘陵城市(荆门、襄樊、宜昌)和6个平原城市(武汉、孝感、咸宁、荆州、随州、黄石)绿地土壤进行采样.每个城市又按照4种不同利用类型,包括公园绿地、住宅区、事业单位(包括学校、医院、政府机关等)和交通主干道绿地分别取样.结果表明:湖北省主要城市绿地土壤pH较自然土壤明显偏高,均值7.9;土壤有机质(6.8g·kg-1)明显处于缺乏水平;有效N、P、B含量处于较低水平;其他中微量元素(Ca、Mg、S、Fe、Cu、Mn、Zn和B)有效态含量适中.土地利用方式对平原城市土壤养分含量影响显著,住宅区绿地土壤pH显著高于公园、街道旁和事业单位,街道绿地微量元素S、Cu、Mn、Zn有效态含量显著高于其他利用类型,公园绿地养分含量最低.不同地形城市土壤养分含量存在显著差异,平原城市土壤有机质、铵态氮、有效K、有效P和许多中微量养分元素(Ca、Mg、S、Fe、Cu和Mn)的含量显著高于丘陵城市.
According to the topography of the cities in Hubei Province, soil samples were collected from the urban green space in two mountainous cities （Enshi and Shiyan）, three hilly cities （Jingmen, Xiangfan and Yichang）, and five plain cities （Wuhan, Xiaogan, Xianning, Jingzhou, Suizhou and Huangshi）. Within each city, subsoil samples were taken in accordance with four different types of land use, including park, residential, institutional （school, hospital and government, etc.）, and roadside. In the main cities in Hubei, the soil pH of urban green space was averagely 7.9, being obviously higher than that of natural soils, while the soil organic matter content was rather low （6.8 g·kg-1）. The soil available N and P contents were at a low level, while the soil available trace element （Ca, Mg, S, Fe, Cu, Mn, Zn and B） contents were moderate. Land use type had significant effects on the soil nutrient contents in plain cities. The soil pH in the residential green space was significantly higher than that in the park, roadside and institutional green space, while the contents of soil available trace elements （S, Cu, Mn and Zn） in roadside green space were significantly higher than those of green space in the other land use types. Park green space had the lowest soil nutrient contents. There existed significant differences in the soil nutrient contents among the cities with different topography. The soil organic matter, NH4-N, available K and P, and Ca, Mg, S, Fe, Cu and Mn contents were significantly higher in plain cities than in mountainous cities.
出处
《应用生态学报》
CAS
CSCD
北大核心
2013年第8期2159-2165,共7页
Chinese Journal of Applied Ecology
基金
国际植物营养研究所(IPNI)中国项目(Hubei-33/34)资助
关键词
城市绿地
土壤养分
湖北省
土壤养分管理
urban green space
soil nutrient
Hubei Province
soil nutrient management.
