基于GIS和统计学的土壤监测指标时空变化分析
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汪媛媛, 华明, 金洋, 崔晓丹, 许伟伟, 李文博, 刘玮晶, 汪子意, 文宇博
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An analysis of the temporal and spatial changes in soil monitoring indices based on GIS and statistics
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WANG Yuan-Yuan, HUA Ming, JIN Yang, CUI Xiao-Dan, XU Wei-Wei, LI Wen-Bo, LIU Wei-Jing, WANG Zi-Yi, WEN Yu-Bo
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表3 土壤As和重金属元素成对样本t检验
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Table 3 Results of t-test for As and heavy metals in soil
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元素 | 成对差值 | t | df | Sig. (双侧) | 0.005水平 下有无显 著差异 | 均值 | 标准差 | 均值的 标准误差 | 差值的95% 置信区间 | 下限 | 上限 | As15-As04 | 0.924 | 1.641 | 0.082 | 0.764 | 1.084 | 11.335 | 404 | 0 | 有 | Cd15-Cd04 | 0.025 | 0.065 | 0.003 | 0.019 | 0.032 | 7.763 | 407 | 0 | 有 | Cr15-Cr04 | -0.035 | 7.270 | 0.365 | -0.753 | 0.683 | -0.096 | 395 | 0.924 | 无 | Cu15-Cu04 | 3.281 | 4.195 | 0.209 | 2.870 | 3.691 | 15.718 | 403 | 0 | 有 | Hg15-Hg04 | -0.001 | 0.039 | 0.002 | -0.003 | 0.005 | 0.546 | 409 | 0.586 | 无 | Ni15-Ni04 | -0.019 | 3.923 | 0.197 | -0.406 | 0.370 | -0.099 | 398 | 0.921 | 无 | Pb15-Pb04 | 5.989 | 5.282 | 0.261 | 5.476 | 6.503 | 22.930 | 408 | 0 | 有 | Zn15-Zn04 | 8.044 | 12.123 | 0.606 | 6.852 | 9.236 | 13.271 | 399 | 0 | 有 |
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