干旱区生态环境知识资源中心(Arid): 六盘山主要树种叶片稳定性碳同位素组成的时空变化特征

Arid

	六盘山主要树种叶片稳定性碳同位素组成的时空变化特征
其他题名	Spatial-temporal Pattern of Stable Carbon Isotope Composition of Dominant Tree Species in Liupanshan Mountain
	王云霓 1; 熊伟 1; 王彦辉 1; 程积民 2; 于澎涛 1; 徐丽宏 1; 何聪 3; 郝佳 1; 李振华 1; 张晓蓓 4
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2012
卷号	19 期号:3 页码:42-47
中文摘要	为了认识树种叶片水分利用效率的种内和种间差异及随水分生境条件和季节的变化特征,2010年69月份,在宁夏六盘山香水河小流域(半湿润区)和叠叠沟小流域(半干旱区),测定了两种不同水分生境内主要树种的叶片稳定碳同位素组成(delta~(13)C)。结果表明:同一树种叶片delta~(13)C值存在着明显的冠层部位差异,但各树种表现各异,其中华北落叶松(Larix prin-cipris-rupprechtii)、白桦(Betula platyphylla)和油松(Pinus tablaeformis)表现为上部>中部>下部,而华山松(Pinus arman-dii)和辽东栎(Quercus liaotungensis)为下部>上部>中部。各树种叶片的delta~(13) C值表现出明显的季节变化特征,但其变化随水分生境条件而异。在半湿润区,各树种的delta~(13) C值在生长季初期较高,但随生长季的持续而降低;在半干旱区,各树种的delta~(13)C值呈现出"高低高"的变化态势。在两种不同水分生境下,华北落叶松和沙棘(Hippophae rhamnoildes)叶片的delta~(13) C值存在着明显的种内个体差异:旱季,同一树种在半干旱区树木叶片的delta~(13)C要大于半湿润区;但雨季两地树木叶片的delta~(13)C差异不大,说明这种季节差异受当地降雨量的季节分配格局影响较大。
英文摘要	The leaf delta~(13)C values of dominant tree species were measured from June to September in 2010 in the south(Xiangshuihe Watershed,semi-humid area) and north(Diediegou Watershed,semi-arid area) of Liupanshan Mountain,Ningxia.The differences in leaf delta~(13)C between species and individuals were analyzed,and its seasonal pattern was also determined.The results showed that leaf delta~(13)C increased with increase of canopy height of Larix principris-rupprechtii,Betula platyphylla,Pinus tablaeformis,but the leaf delta~(13)C in the low canopy of Pinus armandii and Quercus liaotungensis were higher compared with those of the mid-and upper parts in the canopy.The leaf delta~(13)C values of species were various in different periods of growing season,being relatively higher delta~(13)C in the early stage than that in the middle and late phases.And the characteristics of seasonal pattern in leaf delta~(13)C were correlated with water environmental condition of habitat.In the semi-humid area,the leaf delta~(13)C of tree species decreased over the time,but in the semi-arid area,the seasonal change in the leaf delta~(13)C followed as a high-low-high pattern during the growing season.The leaf delta~(13)C among individual trees of L.principris-rupprechtii and Hippophae rhamnoides in two different water environmental regions were significantly different,but it was mainly influenced by the seasonal pattern of rainfall in different stages of growing season,semi-arid area with the highest values in dry season(the early and late stage of the growing season) had similar delta~(13)C values in rainy season(the medium stage of the growing season) in semi-humid area.It showed that the ability of water use of the same tree species could be improved through long-term adaptation to drought.
中文关键词	冠层 ; 季节变化 ; 水分生境
英文关键词	delta~(13)C delta~(13)C canopy seasonal change habitat
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:4559082
来源机构	中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228619
作者单位	1.中国林业科学研究院森林生态环境与保护研究所, 北京 100091, 中国; 2.中国科学院水利部水土保持研究所, 杨凌, 陕西 712100, 中国; 3.广西大学林学院, 南宁, 广西 530005, 中国; 4.河北农业大学林学院, 保定, 河北 071000, 中国
推荐引用方式 GB/T 7714	王云霓,熊伟,王彦辉,等. 六盘山主要树种叶片稳定性碳同位素组成的时空变化特征[J]. 中国科学院水利部水土保持研究所,2012,19(3):42-47.
APA	王云霓.,熊伟.,王彦辉.,程积民.,于澎涛.,...&张晓蓓.(2012).六盘山主要树种叶片稳定性碳同位素组成的时空变化特征.水土保持研究,19(3),42-47.
MLA	王云霓,et al."六盘山主要树种叶片稳定性碳同位素组成的时空变化特征".水土保持研究 19.3(2012):42-47.