干旱区生态环境知识资源中心(Arid): The establishment and development of Haloxylon ammodendron promotes salt accumulation in surface soil of arid sandy land

Arid

	The establishment and development of Haloxylon ammodendron promotes salt accumulation in surface soil of arid sandy land
	Su Yongzhong; Liu Tingna; Kong Junqia
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2019
卷号	11 期号:2 页码:116-125
英文摘要	Haloxylon ammodendron, a representative C4 succulent xerophyte and salt-secreting plant, is widely used in vegetation reestablishment programs to stabilize shifting sand, and is one of the dominant shrubs in the shelter belt used to control desertification in the desert-oasis ecotone in northwestern China. In this study, we collected soil samples in an age sequence of 0-, 2-, 5-, 13-, 16-, 31-, and 39-year-old H. ammodendron plantations to assess the effects of the shrub on soil fertility and salinity. Results show that SOC and total N concentrations increased significantly with increasing plantation age and increased 5.95-(in the interspaces) to 9.05-fold (under the canopy) and 6.15-to 8.46-fold at the 0-5 cm depth at the 39-year-old plantation compared with non-vegetated sandy land. Simultaneously, H. ammodendron establishment and development resulted in significant salt accumulation in the surface layer. On average, total soil salt content at the 0-5 cm and 5-20 cm depth increased 16.8-fold and 4.4-fold, respectively, compared with non-vegetated sandy land. The increase of total salt derived mostly from the accumulation of SO_4~(2-), Ca~(2+) and Na~+ with H. ammodendron development. The accumulation in salinity was more significant than the increase in fertility, suggesting that improved soil fertility did not limit the impact of salinization. The adverse effect of salt accumulation may result in H. ammodendron plantation degradation and impact community stability in the long run.
英文关键词	Haloxylon ammodendron soil salt and its component soil organic carbon plantation chronosequence sandy land in desert-oasis ecotone
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Forestry
CSCD记录号	CSCD:6481886
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336093
作者单位	Su Yongzhong, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-Hydrology in Inland River Basin, CAS, Lanzhou, Gansu 730000, China.; Liu Tingna, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-Hydrology in Inland River Basin, CAS, Lanzhou, Gansu 730000, China.; Kong Junqia, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Eco-Hydrology in Inland River Basin, CAS, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Su Yongzhong,Liu Tingna,Kong Junqia. The establishment and development of Haloxylon ammodendron promotes salt accumulation in surface soil of arid sandy land[J],2019,11(2):116-125.
APA	Su Yongzhong,Liu Tingna,&Kong Junqia.(2019).The establishment and development of Haloxylon ammodendron promotes salt accumulation in surface soil of arid sandy land.Sciences in Cold and Arid Regions,11(2),116-125.
MLA	Su Yongzhong,et al."The establishment and development of Haloxylon ammodendron promotes salt accumulation in surface soil of arid sandy land".Sciences in Cold and Arid Regions 11.2(2019):116-125.