干旱区生态环境知识资源中心(Arid): 基于Ripleys K(r)函数的荒漠锦鸡儿种群分布格局

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	基于Ripleys K(r)函数的荒漠锦鸡儿种群分布格局
其他题名	Distribution Pattern of Caragana roborovskyi Population Based on Ripleys K(r) Function
	刘旻霞; 夏素娟; 南笑宁; 李全弟; 蒋晓轩
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2019
卷号	36 期号:3 页码:606-613
中文摘要	运用点格局分析法中的Ripley K函数,对甘肃中部地区的皋兰县老虎台不同坡向的典型植被荒漠锦鸡儿(Caragana roborovskyi)种群不同龄级的空间格局及其关联性进行分析。结果表明:荒漠锦鸡儿Ⅰ、Ⅱ级种群在整个种群中占优势,种群更新状况较好,属增长型种群。在北坡,Ⅰ级荒漠锦鸡儿种群在整个研究尺度内呈聚集分布状态,Ⅱ、Ⅲ、Ⅳ级种群呈随机分布状态;在西北坡,Ⅰ级种群呈明显聚集分布,Ⅱ级在小尺度聚集分布,大尺度呈随机分布状态,Ⅲ、Ⅳ级种群在任何尺度均表现为随机分布状态;在西南坡,所有龄级的荒漠锦鸡儿在各个尺度内均呈随机分布状态。不同坡向,Ⅰ、Ⅱ级种群在小尺度表现为负相关,随尺度增加最终呈不相关状态,Ⅲ、Ⅳ级在整个研究尺度内均为不相关,其他龄级种群之间均为负相关状态。荒漠锦鸡儿种群的自然更新不仅受种间、种内竞争的影响,同时也与不同坡向的生境状况有关。在甘肃中部干旱区采用荒漠锦鸡儿对水土流失地进行恢复重建时,灌木间的株行距在西南坡、南坡以4 m为宜;在西北坡、北坡以3 m为宜。
英文摘要	The spatial pattern and correlation of Caragana roborovskyi at different age levels on different slope aspects in Gaolan County,central Gansu Province was analyzed by using the Ripley K function in the point pattern analysis. The results showed that the C. roborovskyi population in class I and II was dominant in the whole population, and the population regeneration was good. The C. roborovskyi population in class I was clustered in the whole study scale,and that in class II, III and IV was distributed randomly on north slope. On the northwest slope, the population in class I was distributed in an obvious aggregation, that in class II was mostly in a small-scale aggregation and in a random large-scale aggregation,and that in class III and IV was randomly in any-scale aggregations. On the southwest slope,all the age classes of C. roborovskyi were distributed randomly on all scales. On different slopes, the population in class I and II was negatively correlated on the small scale,and it was unrelated with the increase of scale. The population in class III and IV was not related on any scales. In addition, the population at all other age levels was negatively correlated. The population regeneration of C. roborovskyi was not only affected by interspecific and intraspecific competition,but also related to the habitat conditions at different slope aspects. When C. roborovskyi was used to restore and rebuild the soil erosion area in central Gansu Province, the 4 m line spacing between shrubs was suitable on southwest and south slopes,and 3 m one was suitable on northwest and the north slopes.
中文关键词	坡向 ; 荒漠锦鸡儿 ; 种群 ; 空间格局 ; 关联性 ; 甘肃中部
英文关键词	slope aspect Caragana roborovskyi population spatial pattern correlation central Gansu Province
语种	中文
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6490318
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316208
作者单位	西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	刘旻霞,夏素娟,南笑宁,等. 基于Ripleys K(r)函数的荒漠锦鸡儿种群分布格局[J]. 西北师范大学,2019,36(3):606-613.
APA	刘旻霞,夏素娟,南笑宁,李全弟,&蒋晓轩.(2019).基于Ripleys K(r)函数的荒漠锦鸡儿种群分布格局.干旱区研究,36(3),606-613.
MLA	刘旻霞,et al."基于Ripleys K(r)函数的荒漠锦鸡儿种群分布格局".干旱区研究 36.3(2019):606-613.