干旱区生态环境知识资源中心(Arid): 放牧对浑善达克沙地丘间低地植被群落及土壤的影响

Arid

	放牧对浑善达克沙地丘间低地植被群落及土壤的影响
其他题名	Effect of Grazing on Vegetation Community and Soil of Lowland in the Hunshandake Sandy Land
	詹瑾 1; 李玉霖 1; 韩丹 2; 杨红玲 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2019
卷号	39 期号:6 页码:184-191
中文摘要	为探究放牧对丘间低地植被群落及土壤的影响,分析了浑善达克沙地丘间低地在重度和轻度放牧下植被的地上生物量、物种重要值、物种丰富度、Shannon-Wiener多样性指数、Pielou均匀度指数、Simpson生态优势度指数及0~10 cm土壤中黏粒、粉粒、砂粒、有机碳和全氮含量。结果表明:( 1)植被地上生物量、土壤黏粒、粉粒、砂粒、土壤有机碳和全氮含量在不同放牧程度下存在极显著差异( P<0.01),物种丰富度、Shannon-Wiener多样性指数和Pielou均匀度指数在不同放牧程度下差异不显著( P>0.05),Simpson生态优势度指数在不同放牧程度下差异显著( P< 0.05) 。( 2)放牧区植被以禾本科为主,禾本科植被地上生物量占整个植被群落的54.88%~ 57.76%;重度放牧区植被地上生物量为63.59 g·m~(-2),比轻度放牧区低26.61%。( 3)羊草( Leymus chinensis)和狗尾草( Setaria viridis)是放牧区的优势种,其重要值依次为14.16%(重度放牧区)和19.10%(轻度放牧区) 、13.40%(重度放牧区)和15.42%(轻度放牧区),重度放牧下雾滨藜( Bassia dasyphylla) 、克氏针茅( Stipa krylovii)和猪毛蒿( Artemisia scoparia)的重要值较显著高于轻度放牧区,而羊草则低于轻度放牧区。( 4)重度放牧加剧了土壤沙漠化,使砂粒含量增加,草地生产力下降,土壤有机碳和全氮含量降低。
英文摘要	To explore the effects of grazing on the vegetation communities and soils in the lowland. This study analyzed the above-ground biomass,important value of species,vegetation dominance,species richness,Shannon-Wiener diversity index,Pielou evenness index,Simpson ecological dominance index,0-10cm soil clay,soil silt,soil sand,soil organic carbon and total nitrogen content in the lowland between the Hunshandake Sandy Land. The results showed that: ( 1) above-ground biomass,soil clay,soil silt,soil sand,soil organic carbon and total nitrogen content were significantly different under different grazing levels ( P< 0.01),The difference of species richness, Shannon-Wiener diversity index and Pielou evenness index were not significant at different grazing levels ( P> 0.05),and the Simpson ecological dominance index was significantly different under different grazing levels ( P<0.05). ( 2) The grazing area was dominated by Gramineae,the above-ground biomass of Gramineae vegetation accounts for 54.88%-57.76% of the whole vegetation community; the above-ground biomass of heavy grazing area was 63.59 g·m~(-2),which was 26.61% lower than the light grazing area. ( 3) Leymus chinensis and Setaria viridis were the dominant species in grazing areas,with important values corresponding to 14.16% ( heavy grazing areas) and 19.10% ( light grazing areas),13.40% ( severe grazing areas) and 15.42% ( light grazing areas). The important values of heavy grazing under the Bassia dasyphylla、Stipa krylovii and Artemisia scoparia were significantly higher than those of light grazing,while L. chinensis was lower than the light grazing area. ( 4) Heavy grazing exacerbated soil desertification,increased sand content,decreased grassland productivity,and decreased soil organic carbon and total nitrogen content.
中文关键词	放牧 ; 丘间低地 ; 植被群落 ; 土壤 ; 浑善达克沙地
英文关键词	grazing lowland vegetation community soil Hunshandake Sandy Land
语种	中文
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6606021
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315972
作者单位	1.中国科学院西北生态环境资源研究院, 中国科学院奈曼沙漠化研究站, 兰州, 甘肃 730000, 中国; 2.中国科学院西北生态环境资源研究院;;中国科学院大学, 中国科学院奈曼沙漠化研究站;;, 兰州;;, 甘肃;;北京 730000;;100049, 中国
推荐引用方式 GB/T 7714	詹瑾,李玉霖,韩丹,等. 放牧对浑善达克沙地丘间低地植被群落及土壤的影响[J]. 中国科学院西北生态环境资源研究院,2019,39(6):184-191.
APA	詹瑾,李玉霖,韩丹,&杨红玲.(2019).放牧对浑善达克沙地丘间低地植被群落及土壤的影响.中国沙漠,39(6),184-191.
MLA	詹瑾,et al."放牧对浑善达克沙地丘间低地植被群落及土壤的影响".中国沙漠 39.6(2019):184-191.