公园土壤pH值空间分异特征及影响因素研究——以湘潭市建成区雨湖、菊花塘公园为例

Spatial distribution characteristics of soil pH value in Park green area

为揭示城市化对土壤pH值的影响,运用反距离加权(IDW)插值、缓冲区分析和标准差椭圆法,探究湘潭市公园土壤pH值的空间异质性和影响因素。结果表明:(1)雨湖公园区土壤以中性和碱性为主,高值区位于公园东部,低值区位于西北部;菊花塘公园土壤以中性和酸性为主,高值区位于中西部和东南部,低值区位于西北部;都具有强空间相关性;(2)除受自然因素外,雨湖公园土壤pH值城市化影响较大,菊花塘公园受工业酸化作用明显。

In order to reveal the effect of urbanization on soil pH value,inverse distance weighted(IDW)interpolation,buffer analysis and standard deviation ellipse method are used to explore the spatial heterogeneity and influencing factors of soil pH value in Xiangtan park.The results show that:(1)The soil in Yuhu park is mainly neutral and alkaline,the high value area is in the east of the park,and the low value area is in the northwest;the soil in juhuatang park is mainly neutral and acidic,the high value area is in the Midwest and Southeast,and the low value area is in the northwest;all of them have strong spatial correlation;(2)In addition to natural factors,the urbanization of soil pH value in Yuhu park has a greater impact,and the industrial acidification effect is obvious in juhuatang park.