中国土壤中钙积层深度与年降水量关系的定量研究  

Quantitative Study on the Correlation between the Depth of Calcic Horizon in Soil and Annual Precipitation in China

作　　者：潘园园[1] 黄成敏[1] 

机构地区：[1]四川大学环境科学与工程系,四川成都610065

出　　处：《安徽农业科学》2010年第35期20043-20044,20054,共3页Journal of Anhui Agricultural Sciences

基　　金：教育部新世纪优秀人才支持计划项目(NCET-08-0379);国家重点基础发展计划课题(2006CB01401)

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。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.

关 键 词：钙质土壤 钙积层深度 年均降水量 

分 类 号：S151.9[农业科学—土壤学]