干旱区生态环境知识资源中心(Arid): 半干旱黄土丘陵区4种天然次生灌木光合生理和水分利用特征

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	半干旱黄土丘陵区4种天然次生灌木光合生理和水分利用特征
其他题名	Characteristics of Photosynthesis, Respiration and Water Utility of Four Tree Species of Natural Secondary Shrubs in a Semi-arid Loess Hilly-gully Region
	张淑勇 1; 周泽福 1; 张光灿 2; 夏江宝 3
ISSN	1001-7488
出版年	2008
卷号	44 期号:12 页码:140-146
中文摘要	在黄土高原地区,干旱缺水是制约当地经济发展的突出生态特征,也是制约植被恢复和农林业生产重要因素(王克勤等,1998;程积民等,2001;李世东等,2002;安韶山等,2006)。黄土高原植被的恢复过程关键在于树种的选择,以灌木为主,营造灌、草、乔相结合的水土保持林,对加快绿化荒山荒沟速度、保持水土具有重要的现实意义(邹厚远等,1995;程积民等,2001;李世东等,2002;万雪琴等,2005)。但是,从黄土高原地区人工植被建设与退耕还林的现状看,很多地区仍然存在树种单一、树种选择与立地配置不合理的问题。主要原因之一是人们对当地一些可以开发利用的优良树种资源认识不够,缺乏相关植物种类的水分关系研究(程积民等,2001;胡良军等,2002;李世东等,2002;万雪琴等,2005;孙志蓉等,2006)。黄刺玫(Rosa xanthina)、柠条(Caragana korshinskii)、山桃(Prunus davidiana)及山杏(Prunus sibirica)是半干旱黄土丘陵区天然次生林中广泛散生分布的灌木树种,它们具有一定的观赏、药用价值和良好的生态功能,在退耕还林与植被恢复工程中,具有较大的开发潜力。
英文摘要	Three-year old shrub species of Rosa xanthina, Caragana korshinskii, Prunus davidiana and Prunus sibirica in a semi-arid loess hilly region were selected as the experimental material for comparing physiological characteristics, such as photosynthesis, transpiration, water use efficiency, and etc. The results indicated that the non-rectangular hyperbola model could well simulate the photosynthesis-light response curves, with R 2 over 0.98. There were significant differences in the photosynthetic capacity, apparent quantum yield(AQY), dark respiration rate(R d ), light compensation point(LCP), light saturation point(LSP), transpiration rate(T r ) and water use efficiency(WUE) among four shrubs species. The four species displayed different photosynthetic performance in the same environment. The capacity of C. korshinskii was 1.7 times of that of R. xanthina, and 1.44 times of that of P. sibirica. C. korshinskii had the highest ability to use low light, and its AQY was 0.0765, and those of the other three species were among ordinary species. The consumption of photosynthetic products of C. korshinskii was the highest and its metabolism was the most active. R. xanthina. and P. davidiana had relatively higher shade-tolerance, though these four species were photophilous. The sequence of water consuming ability by transpiration was in an order of C. korshinskii>R. xanthina>P. sibirica.>P. davidiana. The water consuming ability of R. xanthina, P. sibirica, P. davidiana did not show significant correlation with meteorological factors. P. sibirica had the highest water use efficiency, and C. korshinskii and P. sibirica had little discrepancy in WUE, but both were obviously higher WUE than R. xanthina. In summary, P. davidiana and P. sibirica have higher development potential in the region, while C. korshinskii, which had higher photosynthetic ability, transpiration and water use efficiency, is the most suitable shrub species for afforestation. The photosynthetic ability and water use efficiency of R. xanthina were lower, and the species is not feasible for artificial plantation in large area.
中文关键词	黄土丘陵区 ; 光合生理特征 ; 光合能力 ; 蒸腾耗水 ; 水分利用效率
英文关键词	loess hilly region photosynthetic and physiological characteristics photosynthetic capacity water consumption by transpiration water use efficiency
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:3439293
来源机构	中国林业科学研究院林业研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222571
作者单位	1.中国林业科学研究院林业研究所, 中科院林木培育重点实验室, 北京 100091, 中国; 2.山东农业大学林学院, 泰安, 山东 271018, 中国; 3.滨州学院黄河三角洲生态环境研究中心, 滨州, 山东 256603, 中国
推荐引用方式 GB/T 7714	张淑勇,周泽福,张光灿,等. 半干旱黄土丘陵区4种天然次生灌木光合生理和水分利用特征[J]. 中国林业科学研究院林业研究所,2008,44(12):140-146.
APA	张淑勇,周泽福,张光灿,&夏江宝.(2008).半干旱黄土丘陵区4种天然次生灌木光合生理和水分利用特征.,44(12),140-146.
MLA	张淑勇,et al."半干旱黄土丘陵区4种天然次生灌木光合生理和水分利用特征".44.12(2008):140-146.