干旱区生态环境知识资源中心(Arid): 几种人工固沙林多种群多尺度格局及种间关联

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	几种人工固沙林多种群多尺度格局及种间关联
其他题名	Multi-species and multi-scale patterns and species associations of sand-fixing plantations
	李慧勇 1; 李慧卿 2; 李清河 2; 刘建锋 2; 江泽平 2
ISSN	1001-9332
出版年	2008
卷号	19 期号:4 页码:741-746
中文摘要	以乌兰布和沙漠东北缘黄灌区绿洲边缘早期营造的人工固沙花棒林、沙拐枣林和梭梭林为主要研究对象,并以附近天然植被为对照,采用连续小样方组成的样带法调查,分析了已进入衰老期的3种人工固沙林的多种群多尺度格局特点及种间关联.结果表明:对照区的天然植被中,74.29%以油蒿单种群格局出现,24.99%以白刺单种群格局出现;人工固沙林逐渐演替成为近天然植被.与对照区天然植被相比,人工固沙林格局强度较高,在防风固沙,促进天然固沙植物恢复、演替方面发挥了重要作用.但随着演替进程,人工种植灌木将衰退减少,天然植物种逐渐成为林分的优势种.在环境条件差异较小情况下,植被的格局尺度受斑块内优势植物种特征及其相互关系的影响较大.种间关联与斑块的大小、植物种组成及不同植物种对斑块的贡献率有关.
英文摘要	Taking three sand-fixing plantations Hedysarum scoparium and Calligonum mongolicum,Haloxylon ammodendron on the oasis verges in northeast Ulanbuhe desert irrigated by Huanghe River as test objects,the multi-species and multi-scale patterns and the species associations of the plantations were investigated by contiguous quadrats transects method,with the natural vegetation nearby as the control.The results showed that 74.29% of the natural vegetation was dominated by single species pattern of Artemisia ordosica,and 24.99% was dominated by single species pattern of Nitraria tangutorum.The sand-fixing plantations gradually became close-to-natural vegetation.Compared with natural vegetation,the sand-fixing plantations had higher pattern intensity,and played important role in sand-fixing and in accelerating the regeneration and succession of natural sand-fixing plants.However,with the succession,artificially planted shrubs would decline,while natural plants would be dominant.Therefore,it should be better to make use of the native dominated species in sand-fixing engineering.Under the almost same conditions,pattern scale was highly correlated with the characters and the associations of dominated species.The species association was correlated with the patch scale and species composition,as well as the species contribution to the patch.
中文关键词	人工固沙林 ; 多种群多尺度格局 ; 种间关联
英文关键词	sand-fixing plantation multi-species and multi-scale pattern species association
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:3243436
来源机构	中国林业科学研究院林业研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222996
作者单位	1.山西省水利水电科学研究院, 太原, 山西 030002, 中国; 2.中国林业科学研究院林业研究所, 北京 100091, 中国
推荐引用方式 GB/T 7714	李慧勇,李慧卿,李清河,等. 几种人工固沙林多种群多尺度格局及种间关联[J]. 中国林业科学研究院林业研究所,2008,19(4):741-746.
APA	李慧勇,李慧卿,李清河,刘建锋,&江泽平.(2008).几种人工固沙林多种群多尺度格局及种间关联.,19(4),741-746.
MLA	李慧勇,et al."几种人工固沙林多种群多尺度格局及种间关联".19.4(2008):741-746.