Arid
DOI10.2111/08-167.1
Grazing Intensity on Vegetation Dynamics of a Typical Steppe in Northeast Inner Mongolia
Liang, Yan1; Han, Guodong2; Zhou, He1; Zhao, Mengli2; Snyman, Hennie A.3; Shan, Dan2; Havstad, Kris A.4
通讯作者Zhou, He
来源期刊RANGELAND ECOLOGY & MANAGEMENT
ISSN1550-7424
EISSN1551-5028
出版年2009
卷号62期号:4页码:328-336
英文摘要

Vegetation features radiating from residential areas in response to livestock grazing were quantified for an arid steppe rangeland in the Keshiketeng Banner, Chifeng Prefecture, in northeastern Inner Mongolia in 2004 and 2006. The aim of this study was to estimate grazing impacts on the vegetation dynamics of these historical grazed ecosystems. Grazing intensities were classified as reference area (RA), light (LG), moderate (MG), arid heavy (HG) according to the vegetation utilization across the study area. Rangelands were studied along a grazing gradient, where characteristics of plant communities, heights of dominant species, aboveground vertical structures, and belowground biomass were investigated. Along this grazing gradient, vegetation changed from the original dominant plant species Leymus chinensis (Trin.) Tzvel. to a semi-subshrub species Artemisia frigida Willd. when moving from the reference area (RA) to the region around the settlement. Canopy coverage, aboveground productivity, and the number of perennial species declined as one moved toward the residential area. Heights of five dominant species, except for Stipa grandis P. Smirn., declined with increased grazing intensity. Aboveground vertical structure in the RA treatment showed more resilience than the other treatments. There was no difference in root biomass in the top 1 in of soil (P > 0.05) between the RA treatment and the area immediately around settlement (HG treatment). Generally, we found that the intensity of grazing disturbance did not exceed the tolerance of the rangeland ecosystem within LG treatment. However, vegetative conditions in HG treatment became worse with increased grazing pressure. Rangelands in this arid steppe are under tremendous threat due to excessive forage utilization, which cannot be considered a sustainable practice.


英文关键词Inner Mongolia grasslands forage utilization grazed ecosystem plant-herbivore interactions
类型Article
语种英语
国家Peoples R China ; South Africa ; USA
收录类别SCI-E
WOS记录号WOS:000268212800005
WOS关键词SEMIARID SOUTH-AFRICA ; RANGELAND DEGRADATION ; RECOVERY PROCESSES ; CENTRAL AUSTRALIA ; ECOSYSTEM ; GRASSLANDS ; PRECIPITATION ; PRODUCTIVITY ; PHYTOMASS ; DIVERSITY
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构中国农业大学 ; New Mexico State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/162396
作者单位1.China Agr Univ, Dept Grassland Sci, Coll Anim Sci & Technol, Beijing 100193, Peoples R China;
2.Inner Mongolia Agr Univ, Hohhot 010018, Inner Mongolia, Peoples R China;
3.Univ Free State, Dept Anim Wildlife & Grassland Sci, ZA-9300 Bloemfontein, South Africa;
4.New Mexico State Univ, USDA, Agr Res Serv Jornada Expt Range, Las Cruces, NM 88003 USA
推荐引用方式
GB/T 7714
Liang, Yan,Han, Guodong,Zhou, He,et al. Grazing Intensity on Vegetation Dynamics of a Typical Steppe in Northeast Inner Mongolia[J]. 中国农业大学, New Mexico State University,2009,62(4):328-336.
APA Liang, Yan.,Han, Guodong.,Zhou, He.,Zhao, Mengli.,Snyman, Hennie A..,...&Havstad, Kris A..(2009).Grazing Intensity on Vegetation Dynamics of a Typical Steppe in Northeast Inner Mongolia.RANGELAND ECOLOGY & MANAGEMENT,62(4),328-336.
MLA Liang, Yan,et al."Grazing Intensity on Vegetation Dynamics of a Typical Steppe in Northeast Inner Mongolia".RANGELAND ECOLOGY & MANAGEMENT 62.4(2009):328-336.
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