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Position: Home > Articles > Effects of Soil Salinity in Land-Lake Ecotone Wetland in Middle Reaches of Heihe River Basin on Growth of Phragmites australis Population Protection Forest Science and Technology 2015 (8) 7-9+21

黑河流域中游水陆交错带湿地土壤盐度对芦苇种群生长发育影响研究

作  者:
李雯靖;孟好军;王立;赵维俊;牛赟;雷军;杨逍虎
单  位:
甘肃省祁连山水源涵养林研究院;甘肃农业大学林学院
关键词:
芦苇;土壤盐度;淹水深度;水陆交错带;湿地
摘  要:
通过对黑河流域中游水陆交错带湿地土壤盐度对芦苇(Phragmites australis)种群生长发育影响进行的调查,研究了该区湿地土壤盐度与芦苇生长的相关性,结果表明:随着盐度的增加,芦苇的地上生物量呈缓慢下降趋势;盐度对芦苇的植株密度和植株高度也有较大的影响,在土壤中盐度低于15‰时,芦苇能够存活生长,当土壤中盐度高于15‰时,将出现负增长;芦苇的幼苗期与成熟期相比有很大的不同,幼苗期的叶片在任何盐度下都有很高的死亡率,盐度对生长期叶子的数量影响非常明显。
译  名:
Effects of Soil Salinity in Land-Lake Ecotone Wetland in Middle Reaches of Heihe River Basin on Growth of Phragmites australis Population
作  者:
Li Wenjing;Meng Haojun;Wang Li;Zhao Weijun;Niu Yun;Lei Jun;Yang Xiaohu;College of Forestry,Gansu Agricultural University;Academy of Water Resources Conservation Forests in Qilian Mountains of Gansu Province;
关键词:
Phragmites australis;;soil salinity;;flood depth;;land-lake ecotone;;wetland
摘  要:
Effects of soil salinity of wetland in land-lake ecotone in middle reaches of Heihe River Basin on growth of Phragmites australis population were investigated.Relationship between soil salinity and growth of Phragmites australis were discussed.Result indicates that with the increase of salinity,the ground biomass of Phragmites australis shows a trend of slow decline;salinity has a great influence on density &height of Phragmites australis.When soil salinity is below 15‰,the Phragmites australis can survive,but when the soil salinity is higher than 15‰,its growth will be negative growth.The seedling period of Phragmites australis is very different from mature period of Phragmites Australis;the leaves in the seedling period have a high mortality rate under any of the salinity.Salinity has very obvious effect on the number of leaves in the growth period.

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