Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2111/08-167.1 |
Grazing Intensity on Vegetation Dynamics of a Typical Steppe in Northeast Inner Mongolia | |
Liang, Yan1; Han, Guodong2![]() | |
通讯作者 | Zhou, He |
来源期刊 | RANGELAND ECOLOGY & MANAGEMENT
![]() |
ISSN | 1550-7424 |
EISSN | 1551-5028 |
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. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。