基于植物功能性状的土壤侵蚀退化修复框架

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中文摘要：当前,我国水土保持林草措施正在积极向提升生态功能为目标转变.为实现这一目标,管理者和工程师需要明确的生态学理论和方法作为指导.通过综述植物功能性状对侵蚀胁迫的响应和对土壤功能的影响机制,验证基于性状响应-影响的生态修复框架在土壤侵蚀治理中的2个关键理论:1)植物性状的变异体现植物对侵蚀退化环境的适应性;2)植物性状显著影响土壤生态过程.进而提出基于植物性状响应—影响的侵蚀退化修复框架.该框架将植物性状对环境变化响应纳入性状对生态系统影响的分析,根据恢复的水土保持服务目标,选择具有影响上述功能的特定植物性状,选择不受侵蚀(或物种间相互作用)胁迫或具有抗逆性的性状进行植物配置.该框架能扩宽当前土壤侵蚀植被治理的研究思路和实践领域,对提升我国的水土保持林草措施具有重要参考意义.

外文标题：A plant functional trait-based framework for ecological restoration of eroded land

外文摘要：[Background]Vegetation restoration is the main eco-engineering measure for controlling soil erosion and restoring degraded soils.Recently,scientists have proposed that biological measures for soil and water conservation in China should be oriented to enhance ecological function and should combine the specific ecological problems and social economic factors to set the ecosystem service as the major goal of the ecological restoration.To achieve those goals,managers and engineers require clear framework and tools.[Methods]Here,we introduced a trait-based approach as a powerful tool to understand the mechanism of soil erosion controlled by vegetation restoration.A literature review was conducted to investigate how plant respond to erosion stresses and how plant influence soil function on plant trait level.[Results]Based on the literature review,two key hypothesizes for applying the trait-based response-and-effect framework to control soil erosion were verified.1)The intraspecific and interspecific variations in plant functional traits were significant heterogeneity.However,those variations were not entirely random,but rather influenced by environmental gradients.2)Plant traits significantly affect soil ecological processes.With this context,we proposed a trait-based response-and-effect framework for ecological restoration on eroded land.That is,plant traits should be selected according to target restored ecosystem service(e.g.,soil conservation,hydrological regulation and carbon storage).Firstly,the environmental stress factors of soil erosion and species interactions of the restored site should be clearly identified.Secondly,selected traits should not only affect the target ecosystem functions,but also not influenced by the environmental stress caused by erosional degradation(or inter-species interaction)or have stress tolerance.Furthermore,we summarized the erosion stress as drought,nutrient limitation,physical disturbance.[Conclusions]We believe that this framework could extend the current research ideas and practices of soil and water conservation vegetation measures,and have important practical implications for improving biological measures of soil and water conservation.

外文关键词：

erosional degradationvegetation restorationplant functional traitsoil conservationecological restorationtrait-based response-and-effect framework

作者：

郝好鑫、吕凤玲、闫峰陵、郭忠录

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作者单位：

长江水资源保护科学研究所,430051,武汉

武汉市农业技术推广中心,430014,武汉

华中农业大学水土保持研究中心,430070,武汉

关键词：

侵蚀退化植被恢复植物功能性状土壤保持生态修复性状响应—影响框架

基金：

国家自然科学基金国家重大水利工程建设基金(三峡后续工作)云南省滇中引水工程环境保护科研项目

项目编号：

4207706612620202700221JO01DZYS-ZH-HJBH-SJ-002

出版年：

2024

DOI：

10.16843/j.sswc.2023041

中国水土保持科学

中国水土保持学会

中国水土保持科学

CSTPCD北大核心

影响因子：0.902

ISSN：1672-3007

年,卷(期)：2024.22(2)

参考文献量48