干旱区生态环境知识资源中心(Arid): 中卫山羊核心产地植物群落的数量分类与排序

Arid

	中卫山羊核心产地植物群落的数量分类与排序
其他题名	Quantitative Classification and Ordination of the Florae in the Nuclear Production Region of Zhongwei goats,Ningxia
	尚占环 1; 姚爱兴 2; 龙瑞军 1; 郭瑞英 3; 郭旭生 4
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2005
卷号	25 期号:5 页码:985-990
中文摘要	应用数量分类(TWINSPAN)和DCA排序方法,对我国特有裘皮用山羊(中卫山羊)核心产地--宁夏香山地区植物群落进行多元分析,根据TWINSPAN分类结果,并结合生态特征将所调查的28个样地植被分为6组,代表了该山地在海拔、地形、土壤、山坡坡度等环境作用下植被空间的分布格局.TWINSPAN分类结果与DCA排序结果较一致,DCA排序第一轴结果主要体现出海拔和山坡坡度对植被分布的作用,第二轴结果主要体现了地形(坡向)和土壤基质(沙地、石质山坡、土质山坡)对植被分布的作用.影响该干旱山地植被分布的主要环境因子有海拔和山坡的坡度,另外长期过度放牧对植被的空间分布影响较大,导致了该山地系统植被空间结构紊乱,并干扰了群落数量分析结果的准确性.
英文摘要	Two-way indicator species analysis and detrended correspondence analysis were adopted to con-duct the multi-analysis of the florae in the region covered by the Xiangshan Mountains of Ningxia .the key production area of Zhongwei fur goats (Zhongwei goat). According to the results of the multi-analysis and in combination with the ecological characteristics of the region,the vegetation distributions depended on their latitudes,landforms,soil and slope gradients. The classifications by the two-way indictor species anal-ysis were consistent with the rankings by the detrended correspondence analysis ;the first axis of the rank-ings by the detrended correspondence analysis mainly expressed the influence of latitudes and slope gradi-ents on the vegetation distribution and the second axis mainly showed the effects of landforms (slope direc-tions), soil textures (sandy soil, lithoid slopeland soil, terrene slopeland soil) on the vegetation distribu-tion. But the major ambient factors affecting the vegetation distribution were latitudes and slopeland gradi-ents. In addition, overgrazing interferred with spatial vegetation distribution to a higher extent, thereby leading to a disordered spatial vegetation structures in mountainous regions and interfering with the quanti-tative analysis of the florae in the region.
中文关键词	中卫山羊 ; 干旱山地 ; 植物群落 ; TWINSPAN分类 ; DCA排序
英文关键词	Zhongwei goat arid mountainous land florae two -way indicator species analysis detrended cor-respondence analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:2031775
来源机构	甘肃农业大学 ; 宁夏大学 ; 中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206776
作者单位	1.甘肃农业大学,草业学院, 兰州, 甘肃 730070, 中国; 2.宁夏大学,草业科学研究所, 银川, 宁夏 750021, 中国; 3.中国农业大学,资源环境学院, 北京 100094, 中国; 4.中国农业大学,草地科学研究所, 北京 100094, 中国
推荐引用方式 GB/T 7714	尚占环,姚爱兴,龙瑞军,等. 中卫山羊核心产地植物群落的数量分类与排序[J]. 甘肃农业大学, 宁夏大学, 中国农业大学,2005,25(5):985-990.
APA	尚占环,姚爱兴,龙瑞军,郭瑞英,&郭旭生.(2005).中卫山羊核心产地植物群落的数量分类与排序.西北植物学报,25(5),985-990.
MLA	尚占环,et al."中卫山羊核心产地植物群落的数量分类与排序".西北植物学报 25.5(2005):985-990.