江浙典型茶园土壤镉的空间分异对比分析

发布时间：2018-05-09 11:18

本文选题：茶园 + 土壤　；参考：《土壤通报》2016年02期

【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。
[Abstract]:Soil cadmium content is one of the key factors affecting tea quality. To reveal its spatial distribution can provide theoretical guidance and regulation suggestions for tea production and quality improvement. Using the spatial analysis function of Arc GIS, the spatial differentiation characteristics of cadmium in topsoil of typical tea plantations in Jiangsu and Zhejiang provinces were compared and analyzed. The results showed that the average soil cadmium content in Jiangsu and Zhejiang tea plantations was not high, among which, the soil cadmium content in Biluochun tea garden in Jiangsu Province was the lowest, which was related to the interplanting pattern. The spatial variation scale of cadmium content in tea garden in Jiangsu province is large, the correlation is weak, and the differentiation source is random, and the spatial variation scale of tea garden in Zhejiang province is basically the same, the correlation is strong, and the system action force is greater. The results showed that the distribution law of cadmium content in tea garden was different and the influencing factors were different. Regional topography and soil type were the main influencing factors, and the water area and human activities would also affect it. Although large-scale management and standardized production can improve the quality of tea, but the single planting mode will also lead to the increase of soil cadmium, therefore, moderate scale, interplanting model is more conducive to the maintenance of tea quality.
【作者单位】：南京师范大学新型城镇化与土地问题研究中心;江苏省地理信息资源开发与利用协同创新中心;江苏省物质循环与污染控制重点实验室;
【基金】：国家自然基金(41271189) 全国耕地后备资源调查评价江苏高校优势学科建设工程资助项目
【分类号】：S571.1;S153.6

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