Characteristics of mineral elements in shoots of three annual halophytes in a saline desert, Northern Xinjiang

查看全文 作　　者：Ke [1,2]ZHANG;ChunJian [2]LI;ZhongShao [3]LI;FuHai [3]ZHANG;ZhenYong [1]ZHAO;ChangYan [1]TIAN

机构地区：[1]Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences;[2]College of Resources and Environmental Sciences, China Agricultural University;[3]Xinjiang Oilfield Water Supply Company

出　　处：《Journal of Arid Land》索引2013年第5卷第2期,共11页

基　　金：financially supported by the Scientific and Technological Project of Xinjiang Uygur Autonomous Region(201130106-2);the Innovation and Sustainable Development Research on Forest Carbon Sink in Karamay 摘　　要：Halophytes are valuable salt-, alkali-and drought-resistant germplasm resources. However, the characteristics of mineral elements in halophytes have not been investigated as intensively as those in crops. This study attempted to investigate the characteristics of mineral elements for annual halophytes during their growth period to reveal their possible physiological mechanisms of salt resistance. By using three native annual halophytes (Salsola subcrassa, Suaeda acuminate and Petrosimonia sibirica) distributed in the desert in Northern Xinjiang of China, the dynamic changes in the mineral element contents of annual halophytes were analyzed through field sampling and laboratory analyses. The results demonstrated that the annual halophytes were able to absorb water and mineral nutrients selectively. In the interaction between the annual halophytes and saline soil, the adaptability of the annual halophytes was manifested as the accumulation of S, Na and Cl during the growth period and maintenance of water and salt balance in the plant, thus ensuring their selective absorption of N, P, K, Ca, Mg and other mineral nutrients according to their growth demand. By utilizing this property, halophyte planting and mowing (before the wilting and death periods) could bioremediate heavy saline-alkali soil. 关键词：盐生植物矿物元素沙漠特征选择性吸收生长发育时期矿质元素含量矿物质元素

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Characteristics of mineral elements in shoots of three annual halophytes in a saline desert, Northern Xinjiang

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