干旱区生态环境知识资源中心(Arid): 干旱和半干旱地区灌木下土壤肥岛研究进展

Arid

	干旱和半干旱地区灌木下土壤肥岛研究进展
其他题名	A research review on "fertile islands" of soils under shrub canopy in arid and semi-arid regions.
	陈广生; 曾德慧; 陈伏生; 范志平; 耿海东
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2003
卷号	14 期号:12 页码:2295-2300
中文摘要	世界许多干旱、半干旱地区草地生态系统逐渐被灌木生态系统取代，这种取代过程的发展是由灌木冠幅下土壤中肥岛的形成和灌木的扩散相互作用直接造成的。这种肥岛的形成和灌木的扩散之间的反馈作用能够改变该系统中的植被组成、结构和土壤养分分布格局，从而改变该生态系统的结构和功能。文中从肥岛的概念和形成机制出发，对肥岛现象形成的原因、肥岛现象的研究意义、研究方法、灌木扩散与肥岛之间的相互关系及生物对肥岛的响应进行了总结，并分析了肥岛研究中应注意的问题，希望为中国干旱、半干旱区域土地退化的成因和过程以及植被恢复的研究提供一些参考。
英文摘要	Due to the inclemency of climate and soil conditions and the intense disturbance of human beings, the soil re-sources heterogeneity in arid and semi-arid grassland ecosystems worldwide was gradually increased during the last century. The interaction between soil heterogeneity and shrubs induced the autogenic development of "fertile islands" and the increasing spread of shrubs in the grassland ecosystems. The development of "fertile islands" around individual shrubs could change the vegetation composition and structure, as well as the distribution pat-terns of soil resources, and thus, reinforced the changes of the ecosystem function and structure from a relative stable grassland ecosystem to a quasi-stable shrubland ecosystem. The study of fertile islands phenomenon would help us to understand the causes, consequences and processes of desertification in arid and semi-arid areas. In this paper, the causes of "fertile islands", its study methods and significance and its relationship with shrub spreading as well as the responses of vegetation to it were summarized. The problems which might occur in the study of this phenomenon were also pointed out. Our aim was to offer some references to the study of land deser-tification processes and vegetation restoration in the arid and semi-arid regions.
中文关键词	灌木 ; 肥岛 ; 土壤资源 ; 空间异质性 ; 土地荒漠化 ; 干旱 ; 半干旱区
英文关键词	shrub fertile islands spatial heterogeneity soil resources land desertification arid and semi-arid regions.
类型	Review
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:1269008
来源机构	中国科学院沈阳应用生态研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204542
作者单位	陈广生, 中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国.; 曾德慧, 中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国.; 陈伏生, 中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国.; 范志平, 中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国.; 耿海东, 国家林业局森林病虫害防治总站, 沈阳, 辽宁 110034, 中国.
推荐引用方式 GB/T 7714	陈广生,曾德慧,陈伏生,等. 干旱和半干旱地区灌木下土壤肥岛研究进展[J]. 中国科学院沈阳应用生态研究所,2003,14(12):2295-2300.
APA	陈广生,曾德慧,陈伏生,范志平,&耿海东.(2003).干旱和半干旱地区灌木下土壤肥岛研究进展.应用生态学报,14(12),2295-2300.
MLA	陈广生,et al."干旱和半干旱地区灌木下土壤肥岛研究进展".应用生态学报 14.12(2003):2295-2300.