干旱区生态环境知识资源中心(Arid): 非灌溉条件下不同年龄梭梭蒸腾耗水比较

Arid

	非灌溉条件下不同年龄梭梭蒸腾耗水比较
其他题名	Comparison among Transpirations of Haloxylon ammodendron communities with Different Ages without Irrigation in the Gurbantonggut Desert
	赵从举 1; 康慕谊 1; 徐广才 1; 雷加强2
ISSN	1001-4675
出版年	2006
卷号	23 期号:2 页码:295-301
中文摘要	通过野外的实际观测,研究2龄、3龄和4龄植物群落区的土壤水分差异及其对梭梭（Haloxylon ammodendron）蒸腾耗水的影响.结果表明：（1）种群年龄增加,土壤水分显著降低,裸地、2龄、3龄、4龄种群0～200 cm土层年平均土壤水分含量分别为74.40,66.08,52.71 mm和49.23 mm;（2）生长初期,不同年龄间梭梭蒸腾速率差异不明显,盛夏,3龄梭梭蒸腾速率最大,生长后期,梭梭蒸腾速率随群落年龄增加而减小;（3）种群年龄增加,梭梭长势停滞,水分消耗减少,2龄、3龄和4龄梭梭平均株高分别为71,132,75 cm,平均冠幅分别为54 cm57 cm,80 cm123 cm,58 cm*63 cm,年均蒸腾耗水分别为33 603.0,98 827.1,32 231.5 g.选择合理的密度配置方式,对维持人工植物群落与土壤水分的相对稳定具有十分重要的作用.
英文摘要	Through a field experiment conducted in the hinterland of the Gurbantonggut Desert, in this study, the dynamic water regime in the soil and its effects on the transpirations of 2-4-year-aged artificial mixed communities of Haloxylon ammodendron, spacing regularly at 2 m * 1 m, are observed. The artificial communities are consisted of two dominant plant species, Haloxylon ammodendron and CaUigonum caput-medusae, which were planted for one year in nursery before transplanted. The results are as follows：（1） The mean annual soil moisture content within 0-200 cm of soil layer under the communities decreases evidently with the increase of community age, figuring at 74.40 mm, 66.08 mm, 52.71 mm and 49.23 mm respectively in the bare area （controlled）, two-year-aged, three-year- aged and four-year- aged communities; （2） In spring and early summer, there are no differences in transpirations of the 2-4-year-aged communities of Haloxylon ammodendron ; in mid-summer, the transpiration of three-year-aged community of Haloxylon ammodendron is highest; in late summer and autumn, the transpirations of the communities of Haloxylon ammodendron decreases with the increase of their age; （3） As the community age goes up, the soil water stress to the growth of Haloxylon ammodendron is increased, and the growth of plants is delayed by the reduction of water consumption. For example, the mean annual water consumption of the 2- 4-year-aged communities of Haloxylon ammodendron with average heights of 71 cm, 132 cm and 75 cm and average canopy extents of 54 cm * 57 cm, 80 cm * 123 cm and 58 cm *63 cm were 33 603.0 g, 98 827.1 g and 32 231.5 g, respectively. In order to reduce the deficit of soil moisture supply and sustain the artificial mixed community, a suitable spacing between Haloxylon ammodendron and Calligonum caput-medusae should be selected.
中文关键词	梭梭 ; 林龄 ; 土壤水分 ; 蒸腾耗水 ; 古尔班通古特沙漠
英文关键词	Haloxylon ammodendron different ages soil moisture regime transpiration the Gurban-tonggut Desert
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:2461094
来源机构	中国科学院新疆生态与地理研究所 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219735
作者单位	1.北京师范大学资源学院, 环境演变与自然灾害教育部重点实验室, 北京 100875, 中国; 2.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	赵从举,康慕谊,徐广才,等. 非灌溉条件下不同年龄梭梭蒸腾耗水比较[J]. 中国科学院新疆生态与地理研究所, 北京师范大学,2006,23(2):295-301.
APA	赵从举,康慕谊,徐广才,&雷加强.(2006).非灌溉条件下不同年龄梭梭蒸腾耗水比较.,23(2),295-301.
MLA	赵从举,et al."非灌溉条件下不同年龄梭梭蒸腾耗水比较".23.2(2006):295-301.