植物研究 ›› 2026, Vol. 46 ›› Issue (4): 626-641.doi: 10.7525/j.issn.1673-5102.2026.04.005
万翔1,2, 胡小柯1,3,4(
), 吴平1,2, 贺方印1,3, 刘淑娟1,2, 原成林5,6
收稿日期:2026-04-16
出版日期:2026-07-20
发布日期:2026-07-22
通讯作者:
胡小柯
E-mail:huxiaoke525@163.com
作者简介:万翔(1988—),女,高级工程师,主要从事植物生理生态研究。
基金资助:
Xiang WAN1,2, Xiaoke HU1,3,4(
), Ping WU1,2, Fangyin HE1,3, Shujuan LIU1,2, Chenglin YUAN5,6
Received:2026-04-16
Online:2026-07-20
Published:2026-07-22
Contact:
Xiaoke HU
E-mail:huxiaoke525@163.com
摘要:
为阐明平茬处理下生态脆弱区典型固沙灌木阶段性功能状态差异,以甘肃民勤荒漠-绿洲过渡带约50 a老龄梭梭(Haloxylon ammodendron)为对象,设置未平茬、半平茬(数量50%)、半平茬(高度50%)和全平茬4种处理,比较平茬处理约2 a后植株构型性状、水分功能性状、碳获取性状、生长旺季非结构性碳水化合物(NSC)含量及80~90 cm土层细根样段性状的差异,并结合相关性分析、主成分分析和熵权TOPSIS法评价不同处理下的性状关联特征和综合功能表现。结果表明:不同平茬处理后,梭梭个体多维功能性状配置存在显著差异。与未平茬和全平茬处理相比,2种半平茬处理整体表现出较好的地上构型状态和功能维持特征。其中,半平茬(高度50%)处理在平均冠幅、活枝数量、自然状态下水分输导能力、水力安全边界和器官NSC含量方面表现较优;半平茬(数量50%)处理则在净光合速率、细根样段总长度和比根长方面具有一定优势。相关性分析和主成分分析表明,水分输导能力、水力受损程度、气孔调节、叶绿素含量、NSC积累和细根样段性状之间存在一定关联,提示平茬处理后梭梭个体功能状态可能表现为多性状联动变化。熵权TOPSIS综合评价显示,半平茬(高度50%)综合得分最高,其次为半平茬(数量50%),二者均高于未平茬和全平茬处理。本研究中,约50 a老龄梭梭在平茬处理约2 a的观测期,半平茬(高度50%)处理在地上构型状态、水分输导能力维持和生长旺季碳水化合物积累方面表现相对较好,可为荒漠-绿洲过渡带老龄梭梭林平茬管理提供阶段性参考。
中图分类号:
万翔, 胡小柯, 吴平, 贺方印, 刘淑娟, 原成林. 荒漠-绿洲过渡带梭梭不同平茬处理后的多维功能性状差异[J]. 植物研究, 2026, 46(4): 626-641.
Xiang WAN, Xiaoke HU, Ping WU, Fangyin HE, Shujuan LIU, Chenglin YUAN. Differences in Multidimensional Functional Traits of Haloxylon ammodendron after Different Stubble Treatments in a Desert-Oasis Ecotone[J]. Bulletin of Botanical Research, 2026, 46(4): 626-641.
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