摘 要：
在国内外相关研究的基础上,总结了土壤中钙积层深度与年均降水量存在函数关系的前提条件,并对中国区域内不同钙质土壤进行了广泛深入的研究,筛选出48个土壤剖面,建立了适用于我国区域的新的土壤钙积层深度x(cm)与年均降水量y(mm)的函数关系式:y=-0.069 3x2+12.063 0x+68.499 0,其中相关系数R2=0.725 4(n=48)。利用这一关系式可根据古土壤推算古降水量,为研究古土壤与古气候定量重建提供更为精确、可靠的数据。
译 名：
Quantitative Study on the Correlation between the Depth of Calcic Horizon in Soil and Annual Precipitation in China
作 者：
PAN Yuan-yuan et al(Department of Environmental Science and Engineering,Sichuan University,Chengdu,Sichuan 610065)
关键词：
Calcium soil;Depth of calcium horizon;Annual mean precipitation
摘 要：
Based on the previously reports at home and abroad,the prior conditions for the function relation between the depth of calcium horizon in soil and annual mean precipitation were summarized.And different calcium soils in China were deeply studied.48 soil profiles were screened out.The function relational expression between the depth x(cm) of new soil calcium horizon in regions of China and annual mean precipitation y(mm) was established:y=-0.069 3x2 + 12.063 0x + 68.499 0,R2 = 0.725 4(n=48).This relationship may be used to derive paleoprecipitation from paleosols,and provide more exact and credible data for studies in paleosols and paleoclimate quantificational reconstruction.
