扬州茱萸湾风景区森林土壤质量状况

城市森林土壤是城市生态系统的重要组成部分,土壤理化性质特征是衡量土壤是否健康的重要途径。该研究选取扬州市茱萸湾风景区内6种不同植被种类的城市森林土壤为研究对象,通过测定不同植被种类下土壤pH、有机质、全氮、全磷、水解性氮、有效磷、速效钾等7个指标,阐明该区域内6种森林的土壤质量状况。结果显示:6种植被种类的森林土壤中,pH值在6.26与8.91之间,其中3号山茱萸林的土壤pH值超过了标准最高值,碱性偏大;土壤有机碳含量均未达到标准的最低值;有效磷的数值均偏低,在标准均值以下。建议在今后的城市森林土壤的养护管理中,应根据土壤理化性质的实际情况进行合理施用有机肥和磷肥。

Soil quality of urban forest in different vegetationtypes in Zhuyuwan Scenic Spot,Yangzhou

Urban forest soil is an important part of urban ecosystem,and its physical and chemical properties are important to determine the health of soil.After selecting urban forest soil of six different vegetation types as the research object in Scenic Spot of Zhuyuwan,Yangzhou,by determination of seven indicators such as soil pH,organic matter,total nitrogen,total phosphorus,hydrolytic nitrogen,available phosphorus and potassium,the soil nutrient status in the area was defined.The results showed that the pH value of six forest soils ranged from 6.26 to 8.91,soil organic carbon content did not reach the minimum value of the standard,and the values of available phosphorus were below the standard mean.It is suggested that more attention should be paid to the conservation and management of soil in the future urban forest conservation,especially according to the actual situation of soil physical and chemical indicators,rational application of organic fertilizer and phosphate fertilizer should be committed.