干旱区生态环境知识资源中心(Arid): 喀斯特石漠化区不同小生境常见灌木种叶片delta~(13)C值特征

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	喀斯特石漠化区不同小生境常见灌木种叶片delta~(13)C值特征
其他题名	Characteristics of foliar delta~(13)C values of common shrub species in various microhabitats with different karst rocky desertification degrees.
	杜雪莲; 王世杰; 容丽
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2011
卷号	22 期号:12 页码:3094-3100
中文摘要	测定了喀斯特石漠化区不同小生境内5种常见灌木(鼠李、火棘、粉枝莓、竹叶椒和烟管荚蒾)的叶片delta~(13)C值,探讨喀斯特石漠化对植物水分利用空间异质性的影响.结果表明:不同小生境植物的delta~(13)C均值大小顺序为:石面>石沟>石缝>土面.土面生境中多数灌木种植株叶片delta~(13)C值较其他生境偏轻;灌木叶片delta~(13)C值大小顺序为:烟管荚蒾>粉枝莓>竹叶椒>火棘>鼠李.各小生境内灌木叶片delta~(13)C均值和主要灌木种叶片delta~(13)C值均随着石漠化加深而增大,且不同小生境间差异显著.随着石漠化的加剧,喀斯特生境结构和功能受损,小生境逐渐分异,环境逐渐向着干旱化发展。
英文摘要	By measuring the foliar delta~(13)C values of 5 common shrub species(Rhamnus davurica,Pyracantha fortuneana,Rubus biflorus,Zanthoxylum planispinum,and Viburnum utile) growing in various microhabitats in Wangjiazhai catchment,a typical karst desertification area in Guizhou Province,this paper studied the spatial heterogeneity of plant water use at niche scale and the response of the heterogeneity to different karst rocky desertification degrees.The foliar delta~(13)C values of the shrub species in the microhabitats followed the order of stony surface > stony gully > stony crevice > soil surface,and those of the majority of the species were more negative in the microhabitat soil surface than in the others.The foliar delta~(13)C values decreased in the sequence of V.utile > R.biflorus > Z.planispinum > P.fortuneana > R.davurica,and the mean foliar delta~(13)C value of the shrubs and that of typical species in various microhabitats all increased with increasing karst rocky desertification degree,differed significantly among different microhabitats.It was suggested that with the increasing degree of karst rocky desertification,the structure and functions of karst habitats were impaired,microhabitats differentiated gradually,and drought degree increased.
中文关键词	喀斯特石漠化 ; 小生境 ; 灌木 ; delta~(13)C值
英文关键词	karst rocky desertification microhabitat shrub delta~(13)C values.
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4399490
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227351
作者单位	中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 贵州 550002, 中国
推荐引用方式 GB/T 7714	杜雪莲,王世杰,容丽. 喀斯特石漠化区不同小生境常见灌木种叶片delta~(13)C值特征[J],2011,22(12):3094-3100.
APA	杜雪莲,王世杰,&容丽.(2011).喀斯特石漠化区不同小生境常见灌木种叶片delta~(13)C值特征.应用生态学报,22(12),3094-3100.
MLA	杜雪莲,et al."喀斯特石漠化区不同小生境常见灌木种叶片delta~(13)C值特征".应用生态学报 22.12(2011):3094-3100.