干旱区生态环境知识资源中心(Arid): 乌兰布和沙漠沙冬青种群结构和空间分布

Arid

	乌兰布和沙漠沙冬青种群结构和空间分布
其他题名	Size Structure and Distribution Pattern of Ammopiptanthus mongolicus Population in Ulanbuh Desert
	靳虎甲; 王继和; 马全林
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2010
卷号	30 期号:11 页码:2300-2306
中文摘要	对乌兰布和沙漠不同区域分布的沙冬青(Ammopiptanthus mongolicus)种群结构和空间分布格局进行了研究,根据大小结构图分析沙冬青种群动态,用平均拥挤度(m),丛生指数(I),聚块性指标(m/m),Cassie指标(CA),扩散系数C,负二项分布中的K指标判断格局类型,并根据双项轨迹方差法分析格局规模.结果表明:沙漠中部分布的沙冬青种群年龄结构完整,而其他区域分布种群结构均不完整;各区域分布种群均以中龄级个体居多,种群目前处于相对稳定的状态,但是由于幼龄级个体少,种群更新困难,且部分区域种群有"老龄化"的趋势.在西北边缘和沙漠北部分布的种群为聚集分布类型,而其他区域均为均匀分布;对各样地种群格局规模的分析也表明格局规模存在差异
英文摘要	In order to investigate the size structure and spatial distribution pattern of Ammopiptanthus mongolicus population in Ulanbuh Desert, five typical distribution area of A.mongolicus were chose, which are northwest edge, north, middle, east and south of the desert. The population structure of A.mongolicus was analyzed by size class. Moreover, the pattern of A.mongolicus was studied by using mean crowding(m), clumping index(I), patchiness index(m/m), Cassie index(CA), dispersal index(C) and parameter of negative binominal(K), and the pattern scale was analyzed by two-term local variance. The results showed that the A.mongolicus population in middle of the desert had complete structure of size class, but there were incomplete structures in the other regions. A.mongolicus populations were mostly at medium age classes, and the population was in a relatively stable condition. However, population regeneration was difficult because of fewer seedling, and there are aging trend in the population in east of the desert. The population in northwest edge and north of Ulanbuh Desert were aggregation distribution, but the populations in the other regions were uniform distribution. The distribution pattern analysis showed that there were difference pattern scales among the different regions
中文关键词	沙冬青种群 ; 大小结构 ; 空间分布 ; 格局规模 ; 乌兰布和沙漠
英文关键词	Ammopiptanthus mongolicus population size structure spatial distribution pattern pattern scale Ulanbuh Desert
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:4070249
来源机构	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/2XILL650/225781
作者单位	甘肃省治沙研究所, 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	靳虎甲,王继和,马全林. 乌兰布和沙漠沙冬青种群结构和空间分布[J]. 甘肃省治沙研究所,2010,30(11):2300-2306.
APA	靳虎甲,王继和,&马全林.(2010).乌兰布和沙漠沙冬青种群结构和空间分布.西北植物学报,30(11),2300-2306.
MLA	靳虎甲,et al."乌兰布和沙漠沙冬青种群结构和空间分布".西北植物学报 30.11(2010):2300-2306.