干旱区生态环境知识资源中心(Arid): 多枝柽柳幼苗根系形态及生物量对不同灌溉处理的响应

Arid

	多枝柽柳幼苗根系形态及生物量对不同灌溉处理的响应
其他题名	Response of root morphology and biomass of Tamarix ramosissima seedlings to different water irrigations
	马晓东 1; 朱成刚 2; 李卫红2
来源期刊	植物生态学报
ISSN	1005-264X
出版年	2012
卷号	36 期号:10 页码:1024-1032
中文摘要	多枝柽柳(Tamarix ramosissima)是塔里木河下游荒漠河岸林中的优势灌木,对荒漠河岸植被群落的稳定起着重要作用。该文通过研究多枝柽柳幼苗根系形态对不同灌溉处理的响应,分析人工水分干扰对多枝柽柳幼苗根系生长的影响。实验设计了侧渗分层和地表灌溉两种给水方式和高灌(50L·株~(-1))、中灌(25L·株~(-1))、低灌(12.5L·株~(-1))三个给水水平,并在整个生长季节监测每个植株的生物量及根系形态参数。结果显示:与地表灌溉比较,侧渗分层的灌溉方式显著提高了细根(0.5mm
英文摘要	Aims Deficient water resources in the lower reaches of Tarim River of China impose constraints on the growth and survival of planted seedlings of Tamarix ramosissima. Our objective was to study root morphology and growth of T. ramosissima seedlings to provide suggestions for rehabilitating degraded desert riparian forest. Methods We investigated root growth, biomass production of the seedlings under two irrigation treatments, i.e., layered-side irrigation and above-ground irrigation, and three watering levels, i.e., high water level (W1, 50 L· tree ~(-1)), medium water level (W2, 25 L·tree ~(-1)) and low water level (W3, 12.5 L·tree ~(-1)). Important findings Layered side-irrigation significantly increased fine root length (0.5 mm < d < 2 mm), fine root surface area, coarse root biomass (d > 2 mm), below- and above-ground biomass and root depth compared with above-ground irrigation. Root length and biomass with layered side-irrigation and W1 increased significantly (p < 0.05). Total fine root (d < 2 mm) specific root length (SRL) with layered side-irrigation increased significantly with the increase in watering level, and above-ground irrigation caused insignificant differences in the SRL between W1, W2 and W3. The root/shoot ratio (R/S) in the layered side-irrigation treatment was less than that in the above-ground irrigation treatment. Our results suggest that the layered side-irrigation caused more rapid and greater root elongation, as well as root biomass production in T. ramosissima seedlings. This may benefit seedling survival in the early growing stage.
中文关键词	生物量 ; 侧渗分层灌溉 ; 根系形态 ; 多枝柽柳 ; 灌溉量
英文关键词	biomass layered side-irrigation root morphology Tamarix ramosissima watering level
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:4648401
来源机构	中国科学院新疆生态与地理研究所 ; 新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228875
作者单位	1.新疆师范大学生命科学学院, 乌鲁木齐, 新疆 830054, 中国; 2.中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830054, 中国
推荐引用方式 GB/T 7714	马晓东,朱成刚,李卫红. 多枝柽柳幼苗根系形态及生物量对不同灌溉处理的响应[J]. 中国科学院新疆生态与地理研究所, 新疆师范大学,2012,36(10):1024-1032.
APA	马晓东,朱成刚,&李卫红.(2012).多枝柽柳幼苗根系形态及生物量对不同灌溉处理的响应.植物生态学报,36(10),1024-1032.
MLA	马晓东,et al."多枝柽柳幼苗根系形态及生物量对不同灌溉处理的响应".植物生态学报 36.10(2012):1024-1032.