不同灌溉模式对胡杨根蘖苗功能性状的影响
S274; 为巩固塔里木河下游输水成效,需探明最适宜胡杨根蘖苗生长的灌溉模式,以促进区域生态恢复.根蘖苗作为胡杨种群的主要增殖方式和生态恢复的先锋物种,其功能性状是反映生存策略的重要指标,但相关研究仍较为有限.因此,研究在昆阿斯特生态闸口附近,进行了不同灌溉模式对胡杨根蘖苗功能性状影响的野外试验.通过设置3种不同的灌溉梯度,研究灌溉频次、灌溉水量和灌溉持续时间对土壤理化性质及胡杨根蘖苗叶片功能性状的影响.研究结果表明:在F2灌溉模式下,土壤的全氮、全磷含量以及根蘖苗的叶面积(LA)、干物质含量(LDMC)和氮磷比(LN/LP)均显著高于F1和F3灌溉模式.相比之下,F1灌溉模式导致土壤全盐含量...
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| Published in | 节水灌溉 no. 2; pp. 100 - 106 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
新疆水利工程安全与水灾害防治重点实验室,新疆 乌鲁木齐 830052%中国科学院新疆生态与地理研究所,新疆 乌鲁木齐 830011%中国科学院大学,北京 100049
05.02.2025
新疆农业大学水利与土木工程学院,新疆 乌鲁木齐 830052 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1007-4929 |
| DOI | 10.12396/jsgg.2024260 |
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| Abstract | S274; 为巩固塔里木河下游输水成效,需探明最适宜胡杨根蘖苗生长的灌溉模式,以促进区域生态恢复.根蘖苗作为胡杨种群的主要增殖方式和生态恢复的先锋物种,其功能性状是反映生存策略的重要指标,但相关研究仍较为有限.因此,研究在昆阿斯特生态闸口附近,进行了不同灌溉模式对胡杨根蘖苗功能性状影响的野外试验.通过设置3种不同的灌溉梯度,研究灌溉频次、灌溉水量和灌溉持续时间对土壤理化性质及胡杨根蘖苗叶片功能性状的影响.研究结果表明:在F2灌溉模式下,土壤的全氮、全磷含量以及根蘖苗的叶面积(LA)、干物质含量(LDMC)和氮磷比(LN/LP)均显著高于F1和F3灌溉模式.相比之下,F1灌溉模式导致土壤全盐含量较高,进而引起根蘖苗LDMC和LN/LP的下降,同时比叶面积(SLA)有所上升.进一步研究表明,土壤全氮对叶面积的正向影响最为显著,贡献率达到52.4%.相反,土壤全盐含量对LDMC和LN/LP产生了抑制作用,但对SLA具有促进作用,贡献率为31.6%.土壤全磷、pH和含水率对根蘖苗功能性状的总体贡献率较低,仅为16%.因此,根据不同灌溉模式下根蘖苗长势及土壤理化性质对根蘖苗功能性状的影响,确定出F2灌溉模式(灌溉频次23 d,每10 m断根沟每次灌溉水量6 m3,灌溉持续时间2 d)更有利于土壤养分积累,进而有效的促进胡杨根蘖苗的生长.这一研究结果为塔里木河下游胡杨林的生态恢复提供了有力的参考. |
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| AbstractList | S274; 为巩固塔里木河下游输水成效,需探明最适宜胡杨根蘖苗生长的灌溉模式,以促进区域生态恢复.根蘖苗作为胡杨种群的主要增殖方式和生态恢复的先锋物种,其功能性状是反映生存策略的重要指标,但相关研究仍较为有限.因此,研究在昆阿斯特生态闸口附近,进行了不同灌溉模式对胡杨根蘖苗功能性状影响的野外试验.通过设置3种不同的灌溉梯度,研究灌溉频次、灌溉水量和灌溉持续时间对土壤理化性质及胡杨根蘖苗叶片功能性状的影响.研究结果表明:在F2灌溉模式下,土壤的全氮、全磷含量以及根蘖苗的叶面积(LA)、干物质含量(LDMC)和氮磷比(LN/LP)均显著高于F1和F3灌溉模式.相比之下,F1灌溉模式导致土壤全盐含量较高,进而引起根蘖苗LDMC和LN/LP的下降,同时比叶面积(SLA)有所上升.进一步研究表明,土壤全氮对叶面积的正向影响最为显著,贡献率达到52.4%.相反,土壤全盐含量对LDMC和LN/LP产生了抑制作用,但对SLA具有促进作用,贡献率为31.6%.土壤全磷、pH和含水率对根蘖苗功能性状的总体贡献率较低,仅为16%.因此,根据不同灌溉模式下根蘖苗长势及土壤理化性质对根蘖苗功能性状的影响,确定出F2灌溉模式(灌溉频次23 d,每10 m断根沟每次灌溉水量6 m3,灌溉持续时间2 d)更有利于土壤养分积累,进而有效的促进胡杨根蘖苗的生长.这一研究结果为塔里木河下游胡杨林的生态恢复提供了有力的参考. |
| Abstract_FL | To consolidate the ecological benefits of water diversion in the lower reaches of the Tarim River,it is essential to determine the most suitable irrigation regime for the growth of Populus euphratica root-suckers,with the goal of promoting regional ecological restoration.As the primary means of population expansion for P.euphratica and a pioneer species in ecological restoration,the functional traits of root-suckers serve as critical indicators reflecting their survival strategies.However,research in this area remains relatively limited.Therefore,this study conducted a field experiment near the Kun-Ast Ecological Sluice to investigate the effects of different irrigation regimes on the functional traits of P.euphratica root-suckers.By setting up three irrigation gradients,we analyzed the effects of irrigation frequency,irrigation volume,and irrigation duration on the soil physicochemical properties and leaf functional traits of root-suckers.The results showed that under the F2 irrigation regime,the soil total nitrogen(TN)and total phosphorus(TP)contents,as well as the leaf area(LA),leaf dry matter content(LDMC),and leaf nitrogen-to-phosphorus ratio(LN/LP)of root-suckers were significantly higher than those under the F1 and F3 regimes.In contrast,the F1 irrigation regime resulted in a higher total soil salinity,which caused a decline in the LDMC and LN/LP of root-suckers,while specific leaf area(SLA)increased.Further analysis revealed that soil TN had the most significant positive effect on leaf area,contributing 52.4%.Conversely,soil salinity suppressed LDMC and LN/LP but promoted SLA,with a contribution of 31.6%.The overall contributions of soil TP,pH,and water content to root-sucker functional traits were relatively low,accounting for only 16%.Therefore,based on the effects of different irrigation regimes on root-sucker growth and the influence of soil physicochemical properties on their functional traits,the F2 irrigation regime(23-day irrigation intervals,6 m3 water per 10-meter trench,with an irrigation duration of 2 days)was identified as more conducive to soil nutrient accumulation,thereby effectively promoting the growth of P.euphratica root-suckers.These findings provide valuable insights for the ecological restoration of P.euphratica forests in the lower Tarim River region. |
| Author | 孟祥东 覃小林 张广朋 张凌凯 凌红波 王子康 |
| AuthorAffiliation | 新疆农业大学水利与土木工程学院,新疆 乌鲁木齐 830052;新疆水利工程安全与水灾害防治重点实验室,新疆 乌鲁木齐 830052%中国科学院新疆生态与地理研究所,新疆 乌鲁木齐 830011%中国科学院大学,北京 100049 |
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| Author_FL | WANG Zi-kang ZHANG Gang-peng QIN Xiao-lin LING Hong-bo ZHANG Ling-kai MENG Xiang-dong |
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| DOI | 10.12396/jsgg.2024260 |
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| DocumentTitle_FL | Effects of Different Irrigation Patterns on Functional Traits of Populus Euphratica Root Tiller Seedlings |
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| Keywords | 理化性质 root tiller seedlings 功能性状 灌溉模式 functional traits physicochemical property 根蘖苗 irrigation regime 塔里木河下游 lower reaches of Tarim River |
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| PublicationTitle | 节水灌溉 |
| PublicationTitle_FL | Water Saving Irrigation |
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| Publisher | 新疆水利工程安全与水灾害防治重点实验室,新疆 乌鲁木齐 830052%中国科学院新疆生态与地理研究所,新疆 乌鲁木齐 830011%中国科学院大学,北京 100049 新疆农业大学水利与土木工程学院,新疆 乌鲁木齐 830052 |
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| Snippet | S274; 为巩固塔里木河下游输水成效,需探明最适宜胡杨根蘖苗生长的灌溉模式,以促进区域生态恢复.根蘖苗作为胡杨种群的主要增殖方式和生态恢复的先锋物种,其功能性状是反映... |
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| Title | 不同灌溉模式对胡杨根蘖苗功能性状的影响 |
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