长江流域资源与环境 >> 2016, Vol. 25 >> Issue (10): 1576-1584.doi: 10.11870/cjlyzyyhj201610012
董立宽1,2, 方斌1,2,3,4, 施龙博1,2, 马鑫雨2,5, 郑俊5
DONG Li-kuan1,2, FANG Bin1,2,3,4, SHI Long-bo1,2, MA Xin-yu2,5, ZHENG Jun5
摘要: 土壤中磷素的含量对土壤肥力和茶叶品质起着至关重要的作用,探讨土壤磷素含量的空间分布特征及其影响因素,可以为茶园管理和茶叶品质的提升提供理论指导。以江苏省东山镇和浙江省溪龙乡两个优质名茶种植区为例,在遥感影像和DEM数据的基础上,应用地统计学方法,对比研究了两个茶园土壤速效磷含量的空间异质性特征。结果表明:(1)按土壤肥力等级标准,东山镇和溪龙乡速效磷含量的平均水平均较高,利于茶叶生长;(2)东山镇和溪龙乡速效磷含量的变异系数分别为0.46和0.52,均属于中等强度变异;(3)空间插值结果显示,东山镇和溪龙乡速效磷在空间上都具有相连成片的特征,但东山镇速效磷呈阶梯状分布特征,而溪龙乡速效磷则呈辐射状分布特征;(4)东山镇和溪龙乡速效磷的块基比值分别为0.343和0.142,表明溪龙乡速效磷受随机性因素的影响较东山镇的小,而受结构性因素的影响较东山镇的大。
中图分类号:
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