基于GIS和统计学的土壤监测指标时空变化分析
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

An analysis of the temporal and spatial changes in soil monitoring indices based on GIS and statistics
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
表3 土壤As和重金属元素成对样本t检验
Table 3 Results of t-test for As and heavy metals in soil
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
Cd15-Cd04 0.025 0.065 0.003 0.019 0.032 7.763 407 0
Cr15-Cr04 -0.035 7.270 0.365 -0.753 0.683 -0.096 395 0.924
Cu15-Cu04 3.281 4.195 0.209 2.870 3.691 15.718 403 0
Hg15-Hg04 -0.001 0.039 0.002 -0.003 0.005 0.546 409 0.586
Ni15-Ni04 -0.019 3.923 0.197 -0.406 0.370 -0.099 398 0.921
Pb15-Pb04 5.989 5.282 0.261 5.476 6.503 22.930 408 0
Zn15-Zn04 8.044 12.123 0.606 6.852 9.236 13.271 399 0