Below-ground interspecific competition for water in a rubber agroforestry system may enhance water utilization in plants

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 2012年后新成立研究组

	Below-ground interspecific competition for water in a rubber agroforestry system may enhance water utilization in plants
	Liu, Wenjie
刊名	SCIENTIFIC REPORTS
	2016
卷号	6 期号:19502
关键词	SEASONAL RAIN-FOREST USE EFFICIENCY HEVEA-BRASILIENSIS STABLE-ISOTOPES FOG-DRIP CHINA XISHUANGBANNA TREES DEFICIT LEAF
中文摘要	Rubber-based (Hevea brasiliensis) agroforestry systems are regarded as the best way to improve the sustainability of rubber monocultures, but few reports have examined water use in such systems. Accordingly, we tested whether interplanting facilitates water utilization of rubber trees using stable isotope (delta D, delta O-18, and delta C-13) methods and by measuring soil water content (SWC), shoot potential, and leaf C and N concentrations in a Hevea-Flemingia agroforestry system in Xishuangbanna, southwestern China. We detected a big difference in the utilization of different soil layer water between both species in this agroforestry system, as evidenced by the opposite seasonal fluctuations in both dD and d18O in stem water. However, similar predawn shoot potential of rubber trees at both sites demonstrating that the interplanted species did not affect the water requirements of rubber trees greatly. Rubber trees with higher d13C and more stable physiological indexes in this agroforestry system showed higher water use efficiency (WUE) and tolerance ability, and the SWC results suggested this agroforestry is conductive to water conservation. Our results clearly indicated that intercropping legume plants with rubber trees can benefit rubber trees own higher N supply, increase their WUE and better utilize soil water of each soil layer.
公开日期	2016-02-15
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/9656]
专题	西双版纳热带植物园_2012年后新成立研究组西双版纳热带植物园_恢复生态学组
推荐引用方式 GB/T 7714	Liu, Wenjie. Below-ground interspecific competition for water in a rubber agroforestry system may enhance water utilization in plants[J]. SCIENTIFIC REPORTS,2016,6(19502).
APA	Liu, Wenjie.(2016).Below-ground interspecific competition for water in a rubber agroforestry system may enhance water utilization in plants.SCIENTIFIC REPORTS,6(19502).
MLA	Liu, Wenjie."Below-ground interspecific competition for water in a rubber agroforestry system may enhance water utilization in plants".SCIENTIFIC REPORTS 6.19502(2016).