不同土地利用方式下广州绿地土壤的理化特性

文章研究了广州荔湾老城区往东北延伸的样带在不同土地利用方式下广州绿地土壤的理化性状，结果表明，广州绿地土壤利用方式可分为城区人工建植绿地方式、城郊农区方式和郊区林区方式三种。三者相比，郊区林区土壤自然含水量、毛管持水量、最大持水量、非毛管孔隙度均最高，但容重显著低于后两者；人工建植绿地土壤以中性及微碱性为主，另外两种为...

Different Physical-chemical Characteristics of Guangzhou Green Land Soil under Different Utilization Patterns

Different kinds of Guangzhou greenland in physical and chemical charactristics were inrestigated. The results showed countryside forestland had the highest index in natural water content, maximum water capacity, capillary water capacity, non- capillary porosity, while the lowest index in soil bulk density; pH values of urban artificial greenland mainly changed from neutral to alkaline while suburban agricultural and countyside forest soil were acid; the content of soil organic material, total nitrogen and available nitrogen in countryside forests were higher than others, while the content of available copper, zinc, calcium, total lead, total chromium and total cadmium were lower. These results were very sinificant and would provide basic information and technical support for scientifically using and protecting urban soil.