significantly with soil age.This reflected the enrichment of Al/Fe/Ti oxides but the depletion of Si oxides with the soil development.Meanwhile, the values of the Chemical Index of Weathering and the Chemical Index of Alteration increased significantly with soil age, especially from 5 to 89 ...
1. 土壤年代序列 ...壤地形序列(soil toposequence)土壤年代序列(soil chronosequence) 4.1 道库恰耶夫成土因素学说 现代土壤地理学奠基人道库 … www.docin.com|基于 1 个网页 2. 土壤时间序列 ...沙丘、冰碛丘等具不同年代地形面上的土壤,便可建构起土壤时间序列(soil chronosequence) (Jenny, 1941; Harden,...
Soil chronosequences are commonly used to analyze the temporal course of pedogenesis. A time-dependent sequence of soils formed on progressively older landscapes is considered a chronosequence, while the quantitative variability of a characteristic along these landscapes is a chronofunction (Bockheim, 19...
A soil chronosequence on Quaternary marine terraces, San Clemente Island, California. Geoderma 28: 257-283.Muhs DR (1982) A soil chronosequence on Quaternary marine terraces, San Clemente Island, California. Geoderma 28:257–283Muhs, D.R., 1982, A soil chronosequence on quaternary marine ...
Factor analysis of selected chemical and physical properties of four pedons representing three developmental stages of a post incisive soil chronosequence in NW Italy shows that a factorial model describes the variables adequately. Two factors, accounting for 76.9% of the overall variance, descri......
Rare earth element contents correlated with a mafic alteration index and with soil age. Soil colours reflected variation in the proportions of calcite and iron (hydr)oxides, and became redder with age. Most soil properties were fitted by logarithmic chronofunctions that approach asymptotes at 70鈥 ...
Indices based on soil macroelements, such as the chemical index of alteration (CIA), the chemical index of weathering (CIW), the silicon-aluminum ratio (Sa), and the Silicon-aluminum-iron ratio (Saf) could not adequately express the sequential weathering degree of the chronosequence. The ...
Soil microbial biomass and organic component alterations in a no-tillage chronosequence. Soil Sci. Soc. Am. J. 52:998-1005.Staley T E.Soil microbial biomass and organic component alteration in a no-tillage chrono sequence. Soil Science Society of America Journal . 1988...
Weathering processes are recognized as drivers of soil and water resource sustainability, but how pedogenesis stage impacts contaminant reactivity and mobility in soils has been minimally investigated. The primary goal of this study was to quantify how soil development influences contaminant reactivity. To...
Soil microorganisms are sensitive to environmental perturbations such that changes in microbial community structure and function can provide early signs of anthropogenic disturbances and even predict restoration success. We evaluated the bacterial functional diversity of un-mined and three chronosequence sites...