北方城市地被植物应用质量评价方法探讨

根据地被植物固有的特征和北方城市配置应用特点,将地被植物分为基础型地被、骨干型地被和点缀型地被3类。运用频数统计法选择株高、生育期、观赏价值、绿色期、覆盖力、生长势、适应性、养护频度8项指标,构建了地被植物外观质量、生态质量和使用质量3大指标体系。制定评价标准,采用综合指数评价法,验证地被植物的质量等级。通过实例分析验证,该质量评价指标体系和评价方法具有较强的科学性和可操作性,评价结果符合客观实际,对于北方城市地被植物的评价选择应用,具有普遍的适应性和推广价值。

Research on the assessment methods for ground cover plant application in the cities of northern China

Eight indices,plant height,growing period,ornamental value,greening duration,ability of covering,growth vigour,tolerance and maintaining frequency,are selected for quality assessment.The quality assessment criteria system is sub-divided into three categories of appearance quality,ecological quality and application quality.Combined with the features of ground cover plant applications,two-class integrated index estimations are carried out respectively for the fundamental,dominated and decorated ground cover plants.This assessment system is testified by the practical application of 22 ground cover plants to be an effective supplementary means of plant species selection for a given city.