干旱区生态环境知识资源中心(Arid): 呼伦贝尔沙化草地人工固沙植物种间生态位关系研究

Arid

	呼伦贝尔沙化草地人工固沙植物种间生态位关系研究
其他题名	Interspecific Niche Relationship of Artificial Sand-fixation Plants In Hulunbeir Desertification Grassland
	张金鹏; 高菲; 卢欣石
来源期刊	草地学报
ISSN	1007-0435
出版年	2010
卷号	18 期号:1 页码:26-30
中文摘要	采用样方法对呼伦贝尔地区沙化草地不同恢复年限人工播种固沙区进行调查,并计算其主要植物的重要值、生态位体积及生态位重叠值,以研究呼伦贝尔沙化草地人工固沙植物群落特征及演替状况.结果表明:人工固沙植物冰草(Agropyron pectinatum (Bieb.) Beauv.)的平均生态位体积在时间尺度上,呈持续增加趋势,是改良沙化草地的优良草种;小麦(Triticum aestivum L.)与小叶锦鸡儿(Caragana microphylla Lam.)、冰草与羊柴(Hedysarum laeve Maxim)生态位重叠值为0.9213和0.7512,在演替过程中具较强的竞争作用.自然恢复植物与人工播种植物间,多数生态位重叠值不高.自然恢复多年生植物大针茅(Stipa grandis P. Smirn.)、糙隐子草(C1eistogenes squarrosa (Trin.) Keng)等逐渐出现,表明该地区植被群落结构向稳定共存的人工-天然植被群落结构方向发展.
英文摘要	It is necessary to study on plant community condition and its succession in artificial sand-fixation plants in order to restore grassland productivity and maintain sustained and steady development of artificial vegetation community in Hulunbeir desertification grassland. The method adopted in this paper was to survey the artificial sand-fixing areas of Hulunbeir desertification grasslands with different recovery periods (1, 3, 4, and 5 years) and the important value, ecological volume, and niche overlap of main plant species were calculated. The results show that Agropyron pectinatum (Bieb.) Beauv. was the dominance species for the improvement of desertification grassland in this area and its average niche volume presented a continually increasing trend along with temporal scale. The niche overlap value was 0.9213 between Triticum aestivum L. and Caragana microphylla Lam. and 0.7512 between A. pectinatum and Hedysarum laeve Maxim indicating they had strong competitive capacities in community succession. But the niche overlap values between the nature resume plants and artificially seeded plants were not high. The gradual appearances of C1eistogenes squarrosa (Trin.) Keng and Stipa grandis P. Smirn. indicate the community of this area was stably developing to a coexisted artificial-natural state.
中文关键词	呼伦贝尔 ; 人工固沙植物 ; 生态位
英文关键词	Hulunbeir Artificial sand-fixation plants Niche
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:3817536
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224713
作者单位	北京林业大学草地资源与生态实验室, 北京 100083, 中国
推荐引用方式 GB/T 7714	张金鹏,高菲,卢欣石. 呼伦贝尔沙化草地人工固沙植物种间生态位关系研究[J]. 北京林业大学,2010,18(1):26-30.
APA	张金鹏,高菲,&卢欣石.(2010).呼伦贝尔沙化草地人工固沙植物种间生态位关系研究.草地学报,18(1),26-30.
MLA	张金鹏,et al."呼伦贝尔沙化草地人工固沙植物种间生态位关系研究".草地学报 18.1(2010):26-30.