土壤特性受半干旱山区植被类型的影响

IF 2 3区 农林科学 Q3 ECOLOGY
Yahya Kooch , Katayoun Haghverdi , Azam Nouraei , Rosa Francaviglia
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引用次数: 0

摘要

土壤在提供生态系统服务方面发挥着至关重要的作用,尤其是在经常被视为微妙和脆弱系统的山区。众所周知,植被的改变会影响有机物的各种成分和其他土壤性质,进而影响在养分循环中发挥作用的微生物和酶的活动。然而,有关对半干旱山地土壤特性的影响的信息并不多。在此,我们研究了伊朗北部林地(以 Carpinus orientalis Miller.为主)、灌木地(以 Berberis integerrima Bunge.为主)和草地(以 Festuca ovina L.、Dactylis glomerata L.和 Bromus danthoniae Trin.为主)的不同土壤特性。夏季,在每种植被类型中总共采集了 18 个土壤(0-10 厘米深)样本。此外,为了研究土壤小气候和生物群落的动态变化,在秋季采集了相同数量的土壤样本。结果表明,与其他植被类型相比,林地的土壤更肥沃,生物活性更高。土壤蚯蚓群在秋季密度较高,而土壤生物群数量和微生物过程在夏季较强。此外,与灌木林和草地相比,研究区域的林地在土壤肥力和生物活性方面呈现出热点。综上所述,不同类型的植被(尤其是木本植物,而非草本植物)会影响不同的土壤特性。为了提高土壤功能或恢复退化地区,建议自然资源管理者尽可能建立林木植被(乔木或灌木),而不是草地。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Soil properties are affected by vegetation types in a semi-arid mountain landscape

Soil properties are affected by vegetation types in a semi-arid mountain landscape

Soil plays a crucial role in the provision of ecosystem services, particularly in mountain areas that are frequently regarded as delicate and vulnerable systems. The alteration of vegetation cover is known to impact the various fractions of organic matter and other soil properties, subsequently influencing the activities of microbes and enzymes that play a role in nutrient cycling. However, there is not much information available regarding the effect on soil properties in semi-arid mountain landscapes. Here, we studied different soil features under woodland (dominated by Carpinus orientalis Miller.), shrubland (dominated by Berberis integerrima Bunge.) and grassland (dominated by Festuca ovina L., Dactylis glomerata L. and Bromus danthoniae Trin.) in the north of Iran. In the summer, a total of eighteen soil (0–10 cm depth) samples were collected from each vegetation type. In addition, to investigate the dynamics of soil microclimate and biota population, the same number of soil samples were collected in the fall season. Results indicated that woodland had a more fertile soil and a higher biological activity than the other vegetation types. Soil earthworm groups showed higher densities in the fall season, whereas soil biota population and microbial processes were enhanced in the summer season. In addition, the study area presented hot spots of soil fertility and biological activities in woodland compared with shrubland and grassland. As a conclusion, distinct soil properties are influenced by various types of vegetation (particularly woody species in contrast to grass covers). With the aim of increasing soil functioning or rehabilitating degraded areas, natural resource managers are suggested to establish wood covers (trees or shrubs) rather than grasslands, whenever possible.

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来源期刊
Pedobiologia
Pedobiologia 环境科学-生态学
CiteScore
4.20
自引率
8.70%
发文量
38
审稿时长
64 days
期刊介绍: Pedobiologia publishes peer reviewed articles describing original work in the field of soil ecology, which includes the study of soil organisms and their interactions with factors in their biotic and abiotic environments. Analysis of biological structures, interactions, functions, and processes in soil is fundamental for understanding the dynamical nature of terrestrial ecosystems, a prerequisite for appropriate soil management. The scope of this journal consists of fundamental and applied aspects of soil ecology; key focal points include interactions among organisms in soil, organismal controls on soil processes, causes and consequences of soil biodiversity, and aboveground-belowground interactions. We publish: original research that tests clearly defined hypotheses addressing topics of current interest in soil ecology (including studies demonstrating nonsignificant effects); descriptions of novel methodological approaches, or evaluations of current approaches, that address a clear need in soil ecology research; innovative syntheses of the soil ecology literature, including metaanalyses, topical in depth reviews and short opinion/perspective pieces, and descriptions of original conceptual frameworks; and short notes reporting novel observations of ecological significance.
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