| 河水漫溢干扰对土壤盐分的影响——以塔里木河下游为例 |
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| 引用本文： | 徐海量,张沛,赵新风,张鹏,凌红波.河水漫溢干扰对土壤盐分的影响——以塔里木河下游为例[J].水土保持通报,2016,36(5):1-6. |
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| 作者姓名： | 徐海量 张沛 赵新风 张鹏 凌红波 |
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| 作者单位： | 中国科学院新疆生态与地理研究所,新疆乌鲁木齐,830011 |
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| 基金项目： | 国家自然科学基金项目“塔里木河下游输水工程生态变化的量化研究及价值评估”（31370551），“干旱区典型流域人工与天然绿洲面积转化过程与适宜比例”（31400466），“塔里木河绿洲适宜配比及水量调控”（41471099），“漫溢干扰对植被群落动态及主要建群植物种群分布格局的影响”（41171427） |
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| 摘 要： | 目的]探索漫溢后出现明显的植被群落变化的原因和不同漫溢方式对表层土壤盐分的影响,为塔里木河下游植被恢复和人工植被的重建提供理论依据。方法]利用土壤溶液电导率法测定塔里木河下游漫溢区和非漫溢区399个表层土壤样品中盐分含量,探讨不同漫溢干扰方式对土壤盐分的影响。结果]塔里木河下游土壤的含盐量较高,但在漫溢干扰后土壤表层盐分均出现明显的下降;漫溢方式对土壤盐分的影响显著,表现为漫溢前的土壤总盐含量与多次漫溢后差异达极显著,与少次漫溢和冲刷差异显著,与长期渍水差异不显著。结论]漫溢干扰后土壤表层盐分有所降低是植被发生明显变化的原因,其中中等频次和持续时间的漫溢干扰更有利于表层土壤盐分的淋洗和植被的恢复。
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| 关 键 词： | 漫溢干扰 土壤盐分 塔里木河下游 |
| 收稿时间： | 2015/11/17 0:00:00 |
| 修稿时间： | 2015/12/22 0:00:00 |
Effect of River-flooding on Soil Salinity in Lower Reaches of Tarim River |
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| XU Hailiang,ZHANG Pei,ZHAO Xinfeng,ZHANG Peng and LING Hongbo.Effect of River-flooding on Soil Salinity in Lower Reaches of Tarim River[J].Bulletin of Soil and Water Conservation,2016,36(5):1-6. |
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| Authors: | XU Hailiang ZHANG Pei ZHAO Xinfeng ZHANG Peng and LING Hongbo |
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| Institution: | Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang Uygur Autonomous Region 830011, China,Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang Uygur Autonomous Region 830011, China,Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang Uygur Autonomous Region 830011, China,Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang Uygur Autonomous Region 830011, China and Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang Uygur Autonomous Region 830011, China |
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| Abstract: | Objective] The objective of the study is to explain changes in natural vegetation communities after flooding and explore the impacts of different flooding modes on surface soil salinity and to provide the theoretical basis for vegetation restoration and reconstruction of artificial vegetation in lower reaches of Tarim river.Methods] Based on the long-term field investigation, this paper measured the salt content of 399 surface soil samples collected from water flooding area and non-water flooding area with electric conductivity method, and discussed the effects of different flooding disturbances on salt content in surface soil.Results] The total soil salt contents in the lower reaches of Tarim river were generally higher, which affected the distribution and growth of nature vegetation, but after flooding disturbance, the salinity of surface soil declined significantly. The results of ANOVA analysis about soil salinity of surface soil under different flooding modes showed that the effect of higher frequency on the total soil salt contents were more significant than lower frequency, but long-term submerge was disadvantageous for soil desalination, so the effect of flooding mode for soil salinity were significant.Conclusion] The natural vegetation community varied after flooding for the decline of salinity in surface soil, and flooding disturbance with intermediate frequency and duration was beneficial for the ecology restoration in the lower reaches of the Tarim river. |
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| Keywords: | flooding disturbance soil salinity lower reaches of the Tarim river |
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