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The effect of saline-alkaline and water stresses on water use efficiency and standing biomass of Phragmites australis and Bolboschoenus planiculmis
Y. Liu, Z. Ding, C. Bachofen, Y. J. Lou, M. Jiang, X. G. Tang, X. G. Lu and N. Buchmann
2018
发表期刊Science of the Total Environment
卷号644页码:207-216
摘要Salt marsh plants in the West Songnen Plain, northern China, are threatened by increasing soil salinity and alkalinity since the late 20th century. To explore how these wetland ecosystems respond to such environmental changes, we examined the effect of saline-alkaline stresses and water stress (flooding/drought) on water use efficiency (WUE, assessed with stable carbon isotopes) and standing biomass of Phragmites australis and Bolboschoenus planiculmis under both greenhouse and field conditions. In the field, sodium bicarbonate (NaHCO3) was the main saline-alkaline component, and the soil total ion content was negatively related to water level. Higher soil ion content decreased standing biomass of P. australis and B. planiculmis in the field and greenhouse, and increased WUE in the greenhouse. With higher water level, standing biomass of P. australis increased, while that of B. planiculmis decreased in both the field and greenhouse. Alkaline stress exerted the greatest negative influence on growth of P. australis, but only under high ion content. Low alkaline ion content promoted growth of B. planiculmis. Soil ion content exerted the strongest influence on foliar delta C-13 (and thus WUE) and standing biomass of both species compared to water level and stress type. Our findings suggest that under high ion contents, P. australis is more tolerant to flooding stress while B. planiculmis is more tolerant to drought stress. Moreover, P. australis has a high ability to modulate and increase WUE to resist its adverse environment. Our study will contribute to a better understanding of the influence of climate change and increasingly serious human disturbances on the distribution and productivity of these two important wetland species. (C) 2018 Elsevier B.V. All rights reserved.
文献类型期刊论文
条目标识符http://ir.iga.ac.cn/handle/131322/9145
专题中国科学院东北地理与农业生态研究所
作者单位中国科学院东北地理与农业生态研究所
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Y. Liu, Z. Ding, C. Bachofen, Y. J. Lou, M. Jiang, X. G. Tang, X. G. Lu and N. Buchmann. The effect of saline-alkaline and water stresses on water use efficiency and standing biomass of Phragmites australis and Bolboschoenus planiculmis[J]. Science of the Total Environment,2018,644:207-216.
APA Y. Liu, Z. Ding, C. Bachofen, Y. J. Lou, M. Jiang, X. G. Tang, X. G. Lu and N. Buchmann.(2018).The effect of saline-alkaline and water stresses on water use efficiency and standing biomass of Phragmites australis and Bolboschoenus planiculmis.Science of the Total Environment,644,207-216.
MLA Y. Liu, Z. Ding, C. Bachofen, Y. J. Lou, M. Jiang, X. G. Tang, X. G. Lu and N. Buchmann."The effect of saline-alkaline and water stresses on water use efficiency and standing biomass of Phragmites australis and Bolboschoenus planiculmis".Science of the Total Environment 644(2018):207-216.
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