中文摘要：

土壤镉含量是影响茶叶质量的关键性因素之一,对其空间分布规律加以揭示,可为茶叶生产与品质提升提供理论指导与调控建议。运用Arc GIS空间分析功能,对比分析江浙不同地域典型茶园表层土壤镉的空间分异特征。结果表明：江浙茶园土壤镉含量平均水平普遍不高,其中,江苏碧螺春茶园土壤镉含量最低,与其套种种植模式关系大。江苏茶园镉含量空间变异尺度大,相关性较弱,分异来源随机性强;浙江茶园空间变异尺度基本一致,相关性强,系统作用力更大。土壤镉含量插值得出各茶园镉含量分布规律不同,影响因素也有差异,区域地势形态、土壤类型是主要影响因素,水域以及人为活动也会对其产生影响。尽管规模化经营和标准化生产能提升茶叶品质,但单一性种植模式也会导致土壤镉的增加,因此,适度规模、套种模式更有利于茶叶品质的维护。

英文摘要：

The cadmium con tent in soil was one of the key factors influencing tea quality. It was necessary to investigate spatial distribution pattern of cadmium in order to provide theoretical guidance and regulation. By using spatial analysis function of Arc GIS, this article compared and analyzed the spatial differential features of cadmium in surface soil of typical tea gardens in Jiangsu and Zhejiang Provinces. Results showed that the average level of cadmium in tea garden soils of Jiangsu and Zhejiang Provinces was not high generally, but the lowest level was found in the producing area of Biluochun tea in Jiangsu Province, which was closely related with the interplanting. The spatial variation of cadmium contents in the tea garden soils of Jiangsu Province was large and had a random pattern. While the spatial variation of cadmium contents in the tea garden soils of Zhejiang Province was not large basically. The interpolation of cadmium content in the soil obtained showed that the cadmium content of each tea garden was affected mainly by regional terrain morphology and soil type.