干旱区生态环境知识资源中心(Arid): 贵州花江峡谷区常见乔灌植物叶片delta~(13)C值对喀斯特石漠化程度的响应

Arid

	贵州花江峡谷区常见乔灌植物叶片delta~(13)C值对喀斯特石漠化程度的响应
其他题名	Responses of Foliar delta13C Values of Woody Plants to Different Karst Rocky Desertification Degrees in Huajiang Gorge, Guizhou
	容丽; 王世杰; 杜雪莲
ISSN	1001-7488
出版年	2007
卷号	43 期号:6 页码:38-44
中文摘要	比较典型喀斯特石漠化地区不同等级石漠化类型区植物群落中常见木本植物叶片的delta~(13)C值,以植物叶片delta~(13)C值为水分利用效率的指示指标,探讨不同石漠化等级对植物长期水分利用效率的影响.结果显示:各石漠化等级乔灌叶片delta13C值的范围为-30.280～-25.546,平均值为-28.0401.208.不同等级石漠化样地上叶片delta~(13)C值存在显著差异,其中,潜在石漠化样地内叶片delta~(13)C的平均值显著低于强度、中度、轻度石漠化样地的叶片delta~(13)C平均值;而强度、中度及轻度石漠化之间则不存在显著差异.表明荒漠化一旦发生便对植物水分利用效率产生直接影响,而植物生理功能对环境因子改变的适应是敏感、及时的.
英文摘要	The foliar carbon isotope composition (delta~(13)C) of common woody plant species in different degrees of karst rocky desertified lands including latent (L) , slight (SL) , moderate (M) and severe (S) rocky desertified areas was studied. Taking the foliar delta~(13)C values as the indicator of plant water use efficiency(WUE), this paper discussed the effect of the dgree of karst rocky desertification on the plant WUE. The average foliar delta~(13)C values were compared in different degrees of karst rocky desertified plots. The results showed that the delta~(13)C values of foliar in Huajiang gorge ranged from - 30.280 to - 25.546,averaging - 28.040 1.208. There were significant differences in the average foliar delta~(13C values of the different degrees of karst rocky desertification. The values in the latent rocky desertified plots were lower than those in the severe, moderate and slight rocky desertified plots. However, the foliar delta~(13)C values in severe, moderate and slight desertified plots were not significantly different. These results indicated that the effects of different degrees of karst rocky desertification on WUE were obvious. Therefore we concluded that the environmental factors influenced by different degrees of karst rocky desertification should not be neglected. The response of the plant physiological function to the change of the environmental factors was sensitive and timely.
中文关键词	delta~(13)C值 ; 喀斯特石漠化 ; 植物 ; 水分利用效率
英文关键词	delta~(13)C values karst rocky desertification plant water use efficiency
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:2828415
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221199
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	容丽,王世杰,杜雪莲. 贵州花江峡谷区常见乔灌植物叶片delta~(13)C值对喀斯特石漠化程度的响应[J],2007,43(6):38-44.
APA	容丽,王世杰,&杜雪莲.(2007).贵州花江峡谷区常见乔灌植物叶片delta~(13)C值对喀斯特石漠化程度的响应.,43(6),38-44.
MLA	容丽,et al."贵州花江峡谷区常见乔灌植物叶片delta~(13)C值对喀斯特石漠化程度的响应".43.6(2007):38-44.