Characteristics of Biomass Allocation and Root Distribution of Halogeton glomeratus under Different Rainfall Conditions

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	Characteristics of Biomass Allocation and Root Distribution of Halogeton glomeratus under Different Rainfall Conditions
	Li HF(李海峰) ; Ceng FJ(曾凡江) ; Gui DW(桂东伟) ; Liu Z(刘镇) ; An GX(安桂香) ; Zhang LG(张利刚)
刊名	Advanced Materials Research
	2012-05-10
卷号	518 期号:523 页码:5000-5007
其他题名	Characteristics of Biomass Allocation and Root Distribution of Halogeton glomeratus under Different Rainfall Conditions
中文摘要	Water is the limited factor in arid and semi-arid regions. Precipitation, as the sole source of water replenishment in arid area, plays an important role in sustaining the desert ecosystem. With the trend of global warming, precipitation is increasing in arid region recently, especially in the extremely arid region at the south rim of Tarim Basin. Halogeton glomeratus (Bieb.) C. A.Mey is the key species of Gobi desert at the south rim of Tarim Basin, which use the scarce and irregular rainfall for survival in greatest possible. There was little research on characteristics of H. glomeratus involving biomass allocation and root distribution under different rainfall conditions in extremely arid regionsItalic text. Our objective was to study the response for H. glomeratus to the global precipitation change. Artificial controlling water supply was conducted at three levels in experimental fields in Cele Gobi desert. Additionally, the natural precipitation control plot was analyzed for comparison. Frequent harvests were used to determine the response of biomass allocation and root distribution of H. glomeratus during a growing season under extreme rainfall conditions. Biomass of H. glomeratus increased as rainfall increased in the prophase of the growing season, but decreased in the later half phase of the growing season. Biomass allocation showed no significant difference among the treatments. However, H. glomeratus with higher level of rainfall allocates more biomass to roots. H. glomeratus adapts to the lower water condition by means of modulating roots distribution with deeper vertical main root and extent horizontal lateral roots.
学科主题	植物生态学
收录类别	EI收录
公开日期	2014-05-21
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/11340]
专题	新疆生态与地理研究所_监测实验系统（野外台站）_新疆策勒荒漠草地生态系统国家野外研究站
推荐引用方式 GB/T 7714	Li HF,Ceng FJ,Gui DW,et al. Characteristics of Biomass Allocation and Root Distribution of Halogeton glomeratus under Different Rainfall Conditions[J]. Advanced Materials Research,2012,518(523):5000-5007.
APA	李海峰,曾凡江,桂东伟,刘镇,安桂香,&张利刚.(2012).Characteristics of Biomass Allocation and Root Distribution of Halogeton glomeratus under Different Rainfall Conditions.Advanced Materials Research,518(523),5000-5007.
MLA	李海峰,et al."Characteristics of Biomass Allocation and Root Distribution of Halogeton glomeratus under Different Rainfall Conditions".Advanced Materials Research 518.523(2012):5000-5007.