Abstract
The soil nutrients and vegetation characteristics of different vegetation types in Hulunbeier steppe were investigated to get perspective view of steppe deterioration in time gradients from characteristics of vegetation in spatial gradients.Soil nutrients in 0 to 100cm layer were analyzed in the test plots,which can be divided into 4 types:meadow steppe,degenerated steppe,wandering dune,fixed by little leaf peashrub.The results showed that content(alkali-hydrolysable N,available P,available K,organic matter) of soil nutrients interacted with vegetation.The characteristics of soil nutrients were positive correlation with vegetation.The general tendency was that high content of soil nutrients were accompanied with high level vegetation.These 4 vegetation types were significant different in vegetation population structure,coverage,height and biomass.But the response sensitivity of the soil nutrients to vegetations was different.The nutrient otherness rule was different.The alkali-hydrolysable N and organic matter had remarkable relativity.
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Claims 4
Claim · model-written summary
Soil nutrient characteristics were positively correlated with vegetation level.
Not reportedCompoundSetting
Verbatim
e0“The characteristics of soil nutrients were positive correlation with vegetation.The general tendency was that high content of soil nutrients were accompanied with high level vegetation.”
Claim · model-written summary
The four vegetation types differed significantly in population structure, coverage, height and biomass.
Not reportedDirection
Verbatim
e0“These 4 vegetation types were significant different in vegetation population structure,coverage,height and biomass.”
Claim · model-written summary
Soil nutrient responses to vegetation differed in sensitivity.
Not reportedSetting
Verbatim
e0“But the response sensitivity of the soil nutrients to vegetations was different.”
Claim · model-written summary
Alkali-hydrolysable N and organic matter had a strong relationship.
Not reportedTaxonDirection
Verbatim
e0“The alkali-hydrolysable N and organic matter had remarkable relativity.”