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Permanent link (DOI): https://doi.org/10.7939/R3N05N

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Spatial patterns of vegetation and soil fertility along a grazing gradient in a desert steppe in Inner Mongolia, China Open Access

Descriptions

Other title
Subject/Keyword
Steppe plants -- Effect of grazing on -- China -- Inner Mongolia
Steppe plants -- China -- Inner Mongolia -- Geographical distribution
Soil fertility -- China -- Inner Mongolia
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Lin, Yang
Supervisor and department
Dr. Scott Chang (Renewable Resources)
Examining committee member and department
Dr. Edward Bork (Agricultural, Food and Nutritional Science)
Dr. Fangliang He (Renewable Resources)
Dr. James Cahill (Biological Sciences)
Department
Department of Renewable Resources
Specialization

Date accepted
2010-01-28T21:11:00Z
Graduation date
2010-06
Degree
Master of Science
Degree level
Master's
Abstract
Spatial heterogeneities of vegetation and soil can strongly affect ecological processes in arid and semi-arid ecosystems. However, little is known about how those spatial patterns respond to grazing intensity in such systems. I studied how grazing intensity affect the spatial patterns of vegetation and soil nutrients at scales ranging from 0.1 to 18.7 m in a desert steppe in Inner Mongolia, China. Vegetation patches were more fragmented and homogeneous under higher grazing pressure. Heavy grazing also destroyed the spatial aggregation of plant species richness. Spatial heterogeneity of soil water and organic matter contents decreased along the gradient of increasing grazing intensity, while that of soil mineral N was first increased and then decreased along the grazing gradient. Both percent plant cover and power-law modeling could be used to indicate the risk of desertification associated with increasing grazing pressure.
Language
English
DOI
doi:10.7939/R3N05N
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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