干旱区生态环境知识资源中心(Arid): 绿洲边缘人工固沙植被自组织过程

Arid

	绿洲边缘人工固沙植被自组织过程
其他题名	Self-organization Process of Sand-fixing Plantation in A Desert-oasis Ecotone,Northwestern China
	赵文智1 ; 郑颖 2; 张格非 1
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2018
卷号	38 期号:1 页码:1-7
中文摘要	在对植被自组织过程研究进展评述的基础上,研究了河西走廊荒漠绿洲边缘人工固沙植被格局40年来自组织及种群自疏过程,发现在干旱区,特别是降水量200mm以下的荒漠区,绿洲边缘雨养或者降水和地下水共同维系的沙丘人工植被也会发生自组织过程,原来基本均匀栽植的植被出现斑块化,最大斑块面积、斑块密度、斑块聚集度在20~30a出现,但种群自疏过程并未遵循随植被发育年龄变化的规律,而与生境与绿洲的距离及生境地下水埋深显著相关。未来应加强在气候变化和人类干扰条件下植被格局发生突变的阈值范围的研究,也应加强干旱区人工植被自组织过程及其变化等的研究。
英文摘要	The two-phase mosaics of vegetation alternating with bare ground,was frequently observed in arid ecosystem. Theoretical studies suggest that this range of spatial patterns is the result of self-organization as a consequence of resource redistribution.On the basis of the review of self-organized process of vegetation,the spatial patterns and self-thinning process of Haloxylon ammodendron plantation for more than 40 years were analyzed in an oasis-desert ecotone in the Hexi Corridor.Results showed that a self-organized process of sand-fixing plantation would also take place in arid areas especially where precipitation is less than 200 mm.The overall spatial pattern of H.ammodendronshifted from initially uniform distribution to clustered,the landscape patches are becoming fragmented.But the self-thinning process of H.ammodendron plantation don’t follow the natural order of the developmental stages,it is most relevant to the distance between the habitats of H.ammodendronand oasis marginal,and the groundwater depth in the habitats of H.ammodendron plantation.Ecosystem may abruptly shifted from one alternative stable state to another one,accompanied with great changes,under climate change and exacerbated human disturbance,the research of threshold range of vegetation pattern regime shift should be strengthened in the future,and the research of self-organized process of the sand-fixing plantation in the arid areas should also be strengthened.
中文关键词	自组织 ; 植被格局 ; 人工固沙植被 ; 梭梭 ; 绿洲边缘
英文关键词	self-organization process vegetation patterns sand-fixing plantation Haloxylon ammodendron desert-oasis ecotone
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:6160249
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238735
作者单位	1.中国科学院西北生态环境资源研究院中国生态系统研究网络临泽内陆河流域研究站, 中国科学院内陆河流域生态水文重点实验室, 兰州, 甘肃 730000, 中国; 2.中国科学院西北生态环境资源研究院中国生态系统研究网络临泽内陆河流域研究站;;中国科学院大学, 中国科学院内陆河流域生态水文重点实验室;;, 兰州;;, 甘肃;;北京 730000;;100049, 中国
推荐引用方式 GB/T 7714	赵文智,郑颖,张格非. 绿洲边缘人工固沙植被自组织过程[J],2018,38(1):1-7.
APA	赵文智,郑颖,&张格非.(2018).绿洲边缘人工固沙植被自组织过程.中国沙漠,38(1),1-7.
MLA	赵文智,et al."绿洲边缘人工固沙植被自组织过程".中国沙漠 38.1(2018):1-7.