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- W2353669818 abstract "Based on the field surveys and laboratory analysis,the contents of surface soils(0 ～ 20 cm) organic C(SOC) and total N(TN) in dry land,bare land,grassland and woodland were investigated in the Chenjiazhai watershed of typical Karstic plateau of middle Guizhou.The results showed that the mean contents of SOC and TN was 36.71 g.kg-1 and 1.61 g.kg-1,respectively.The contents of SOC and TN in the dryland were 26.78 g.kg-1 and 1.37 g.kg-1,respectively.The slope upland had lower content of SOC and TN than terrace dry land,conversely,the depression dry land had higher content of SOC and TN in comparison with the terrace dry land.Compared with the dry land,the contents of SOC and TN in bare land was obviously lower,being 7.82 g.kg-1and 0.78 g.kg-1,respectively,while those in grassland were higher.The average contents of SOC and TN in woodland were 98.2% and 42.0% higher than those in dry land.The variation coefficients of SOC and TN in the area were 48.18% and 35.16%,respectively.The highest values(44.96% and 43.43%,respectively) were observed in dry land,followed by that in woodland,and the lowest ones were investigated in grassland and bare land(less than 5%).Soil C / N ratio was increased in the order of bare land,dry land,grassland and woodland.Under these four land use types,there was a significant positive correlation between SOC and TN(r = 0.9131).The bare land and slope land could not significantly promote the accumulation of surface SOC and TN in Karstic area,while the conversion of slope land into woodland or grassland was conducive to the accumulation of SOC and TN distinctly." @default.
- W2353669818 created "2016-06-24" @default.
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- W2353669818 date "2013-01-01" @default.
- W2353669818 modified "2023-09-25" @default.
- W2353669818 title "Effects of Land Use Type on Soil Organic Carbonium and Total Nitrogen in a Small Watershed in Karstic Area" @default.
- W2353669818 hasPublicationYear "2013" @default.
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