干旱区生态环境知识资源中心(Arid): 干旱区油蒿种群种内竞争研究

Arid

	干旱区油蒿种群种内竞争研究
其他题名	Analysis on Intraspecific Competition ofArtermisia ordosica Population in Arid Regions
	刘瑞; 李毅; 刘世增; 靳虎甲; 马全林; 张德魁
来源期刊	中国农学通报
ISSN	1000-6850
出版年	2013
卷号	29 期号:10 页码:51-57
中文摘要	油蒿(Artermisia ordosica)是中国干旱、半干旱地区广泛生长的优良固沙种,研究干旱区不同区域油蒿种群的种内竞争可为天然油蒿种群的保护与恢复提供科学依据。选择同处于干旱地区的宁夏中卫市沙坡头、甘肃古浪县鸣沙咀和民勤县扎子沟这3个油蒿天然林分布区,利用Hegyi单木竞争模型对油蒿种内竞争进行分析。结果表明:干旱区天然油蒿种群种内竞争的最适宜竞争范围为6m;随着对象木冠幅的增加,其平均竞争指数呈减小的趋势,且对象木冠幅面积在0.08m~2以下时竞争指数均比较大,当对象木冠幅面积大于0.08m~2时,平均竞争指数迅速减小;不同样地的油蒿种群种内竞争强度存在差异,其大小顺序为鸣沙咀固定沙地>沙坡头>鸣沙咀半固定沙地>扎子沟;用幂函数可以较好的表达油蒿种内竞争与油蒿冠幅之间的关系。
英文摘要	Artermisia ordosica has been highly regarded as a sand fixation plant in arid and semi-arid area of China. The research on the intraspecific competition ofArtermisia ordosica population in different areas can provide a scientific basis for its conservation and restoration. The intraspecific competition ofArtermisia ordosica population in arid regions was studied by using Hegyi’s competition index model for individual tree, chose three typical distribution area forArtermisia ordosica, which are Shapotou Region in Ningxia Province, Mingshazui in Gulang County and Zhazigou in Minqin County in Gansu Province. The results demonstrated that, 6 meters was the optimal competition distance for intraspecific competition of Artermisia ordosica population in arid regions. The intraspecific competition in naturalArtermisia ordosica population gradually became weakened with the crown width of the objective trees increasing. The competition intensity was relatively great when crown area of objective trees was less than 0.08 m~2, and the competition intensity decreased rapidly with the crown area of objective trees was greater than 0.08 m~2. The intraspecific competitive intensity was different in the different area. The intraspecific competitive intensity in different regions ranked in order of fixed dune in Mingshazui, the plot in Shapotou, semi-fixed dune in Mingshazui and the plot in Zhazigou. A power function was developed to describe the relationship between competition intensity and crown width ofArtermisia ordosica.
中文关键词	油蒿种群 ; 竞争指数 ; Hegyi模型 ; 干旱区
英文关键词	Artermisia ordosica population competition index Hegyi model arid regions
类型	Article
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:4891792
来源机构	甘肃农业大学 ; 甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230506
作者单位	刘瑞, 甘肃农业大学林学院, 甘肃省荒漠化与风沙灾害防治重点实验室;;甘肃省省部共建国家重点实验室培育基地;;甘肃省荒漠化防治重点实验室, 兰州, 甘肃 730070, 中国.; 李毅, 甘肃农业大学林学院, 兰州, 甘肃 730070, 中国.; 刘世增, 甘肃省治沙研究所, 甘肃省荒漠化与风沙灾害防治重点实验室;;甘肃省省部共建国家重点实验室培育基地;;甘肃省荒漠化防治重点实验室, 兰州, 甘肃 730070, 中国.; 靳虎甲, 甘肃省治沙研究所, 甘肃省荒漠化与风沙灾害防治重点实验室;;甘肃省省部共建国家重点实验室培育基地;;甘肃省荒漠化防治重点实验室, 兰州, 甘肃 730070, 中国.; 马全林, 甘肃省治沙研究所, 甘肃省荒漠化与风沙灾害防治重点实验室;;甘肃省省部共建国家重点实验室培育基地;;甘肃省荒漠化防治重点实验室, 兰州, 甘肃 730070, 中国.; 张德魁, 甘肃省治沙研究所, 甘肃省荒漠化与风沙灾害防治重点实验室;;甘肃省省部共建国家重点实验室培育基地;;甘肃省荒漠化防治重点实验室, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	刘瑞,李毅,刘世增,等. 干旱区油蒿种群种内竞争研究[J]. 甘肃农业大学, 甘肃省治沙研究所,2013,29(10):51-57.
APA	刘瑞,李毅,刘世增,靳虎甲,马全林,&张德魁.(2013).干旱区油蒿种群种内竞争研究.中国农学通报,29(10),51-57.
MLA	刘瑞,et al."干旱区油蒿种群种内竞争研究".中国农学通报 29.10(2013):51-57.