树木为旱地农业区的功能土壤提供支持

IF 8 1区 环境科学与生态学 Q1 GEOGRAPHY, PHYSICAL
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引用次数: 0

摘要

树木提供多种生态系统服务,如碳封存、水文调节和树栖动物栖息地。然而,为了支持农业企业,树木经常被移走。尽管残留树木非常重要,但我们对不同地点的土壤条件有何不同却知之甚少。在澳大利亚东部一个灌溉区的两个桉树群落中,我们在条件良好和条件较差的地点考察了树木与未植被间隙对残留斑块土壤功能的相对影响。我们发现,一般来说,树下和表层土壤中的碳循环和养分循环相对较多,但与地点条件没有明显的趋势关系。大多数土壤属性(如可溶性阳离子和可交换阳离子、氮、磷)的值在树下更大,这表明两个群落都有很强的肥沃岛效应。总之,我们的研究证实了树木在农业景观中的残留斑块中的重要性,尤其是那些条件较差的地方。研究还表明,即使在条件较差的地点,土壤过程可能仍然相对完好。我们的研究加强了保护残存林地保护区树木的必要性,以维持与养分保持相关的关键生态系统功能。这些残存林地对于实现农业系统的可持续管理非常重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Trees support functional soils in a dryland agricultural area

Trees support functional soils in a dryland agricultural area

Trees provide multiple ecosystem services such as carbon sequestration, hydrological regulation and habitat for arboreal animals. However, they are often removed to support agricultural enterprises. Despite the importance of tree remnants, we know relatively little about how soils differ across sites of varying condition. Here, we describe a study where we examined the relative effects of trees, compared with unvegetated interspaces, on soil functions in remnant patches at sites in good and poor condition in two eucalypt communities in an irrigation area in eastern Australia. We found that, in general, carbon and nutrient cycling were relatively greater beneath trees, and in surface soils, but there were no clear trends in relation to site condition. The values of most soil attributes (e.g., soluble and exchangeable cations, nitrogen, phosphorus) were greater beneath trees, indicating strong fertile island effects in both communities. Overall, our study confirms the importance of trees in remnant patches in agricultural landscapes, particularly those in sites of poor condition. It also suggests that soil processes may still be relatively intact, even in sites in poor condition. Our study reinforces the need to protect trees in remnant woodland reserves to maintain critical ecosystem functions related to nutrient retention. These remnants are important for achieving sustainable management of agricultural systems.

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来源期刊
Geography and Sustainability
Geography and Sustainability Social Sciences-Geography, Planning and Development
CiteScore
16.70
自引率
3.10%
发文量
32
审稿时长
41 days
期刊介绍: Geography and Sustainability serves as a central hub for interdisciplinary research and education aimed at promoting sustainable development from an integrated geography perspective. By bridging natural and human sciences, the journal fosters broader analysis and innovative thinking on global and regional sustainability issues. Geography and Sustainability welcomes original, high-quality research articles, review articles, short communications, technical comments, perspective articles and editorials on the following themes: Geographical Processes: Interactions with and between water, soil, atmosphere and the biosphere and their spatio-temporal variations; Human-Environmental Systems: Interactions between humans and the environment, resilience of socio-ecological systems and vulnerability; Ecosystem Services and Human Wellbeing: Ecosystem structure, processes, services and their linkages with human wellbeing; Sustainable Development: Theory, practice and critical challenges in sustainable development.
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