12种土壤移植后酶活性对6年增温的不同反应

IF 2.6 3区 农林科学 Q1 AGRONOMY
Shujie Miao, Xingyao Wu, Yan Guo, Hongfei Zhao, Yunfa Qiao
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引用次数: 0

摘要

背景土壤酶调节陆地养分循环,其活性对环境变化敏感。面对气候变暖,不同土壤类型的土壤酶对气候变暖的反应仍然存在矛盾。本研究旨在揭示高温对土壤性质的影响。具体而言,我们旨在探索不同土壤类型的土壤酶活性与面临高温的土壤性质之间的关系。方法对12种土壤类型的脲酶、磷酸酶和蔗糖酶三种酶对高温的可能反应进行长期增温试验。这些土壤于2016年在中国各地采集并运至南京。在高温处理(eT)中,使用带有红外辐射加热器的自由空气升温系统将空气温度提高2°C。小麦-大豆连续轮作从2016年开始在长期试验田进行栽培。2021年小麦收获后,测定了酶活性、土壤pH、土壤有机碳、有效氮(AN)和磷(AP)以及水分含量。结果暖化显著提高了大多数土壤类型的脲酶和蔗糖酶活性,但显著降低了磷酸酶活性。三种酶活性对变暖的反应因土壤类型而异,这取决于土壤性质。相反,土壤pH是调节脲酶活性的主要驱动因素。土壤AN和含水量是驱动磷酸酶活性的两个关键因素。然而,蔗糖酶活性没有发现这种关系。所有这些回应都没有显示出明显的区域特征。结论土壤酶对气候变暖敏感,这与不同的土壤性质有关。因此,在未来气候变暖的情况下,管理土壤变量可能是保持土壤酶活性的一种潜在策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Different responses of enzyme activities to 6-year warming after transplant of the 12 types of soils

Background

Soil enzymes regulate terrestrial nutrient cycles, and their activities are sensitive to environmental change. Facing climate warming, there are still contradictions over soil enzymes of different soil types in response to climate warming.

Aims

The present study aims to reveal the impact of elevated temperature on soil properties. Specifically, we intended to explore the relationship between the activity of soil enzyme and soil property facing elevated temperature across soil types.

Methods

A long-term warming experiment was conducted to assess the possible responses of three enzymes (urease, phosphatase, and sucrase) to elevated temperature across 12 soil types. These soils were collected across China and transported to Nanjing in 2016. Free air temperature increase system with an infrared radiation heater was used to elevate the air temperature by 2°C in elevated treatment (eT). Wheat–soybean continuous rotation was cultivated in the long-term experiment field since 2016. Enzyme activities, soil pH, soil organic carbon, available nitrogen (AN) and phosphorus (AP), and water content were measured after wheat harvest in 2021.

Results

Warming significantly increased the activities of urease and sucrase in most soil types but dramatically decreased phosphatase activity. The responses of the three enzyme activities to warming varied across soil types, which depended on soil properties. In contrast, soil pH was the major driver in regulating urease activity. Soil AN and water content were two key factors for driving phosphatase activity. However, no such relationship was found for sucrase activity. All these responses did not show obvious regional characteristics.

Conclusion

These results suggested that soil enzyme was sensitive to air warming, which was associated with different soil properties. Thus, managing soil variables might be a potential strategy to maintain soil enzymatic activity in facing future climate warming.

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来源期刊
CiteScore
4.70
自引率
8.00%
发文量
90
审稿时长
8-16 weeks
期刊介绍: Established in 1922, the Journal of Plant Nutrition and Soil Science (JPNSS) is an international peer-reviewed journal devoted to cover the entire spectrum of plant nutrition and soil science from different scale units, e.g. agroecosystem to natural systems. With its wide scope and focus on soil-plant interactions, JPNSS is one of the leading journals on this topic. Articles in JPNSS include reviews, high-standard original papers, and short communications and represent challenging research of international significance. The Journal of Plant Nutrition and Soil Science is one of the world’s oldest journals. You can trust in a peer-reviewed journal that has been established in the plant and soil science community for almost 100 years. Journal of Plant Nutrition and Soil Science (ISSN 1436-8730) is published in six volumes per year, by the German Societies of Plant Nutrition (DGP) and Soil Science (DBG). Furthermore, the Journal of Plant Nutrition and Soil Science (JPNSS) is a Cooperating Journal of the International Union of Soil Science (IUSS). The journal is produced by Wiley-VCH. Topical Divisions of the Journal of Plant Nutrition and Soil Science that are receiving increasing attention are: JPNSS – Topical Divisions Special timely focus in interdisciplinarity: - sustainability & critical zone science. Soil-Plant Interactions: - rhizosphere science & soil ecology - pollutant cycling & plant-soil protection - land use & climate change. Soil Science: - soil chemistry & soil physics - soil biology & biogeochemistry - soil genesis & mineralogy. Plant Nutrition: - plant nutritional physiology - nutrient dynamics & soil fertility - ecophysiological aspects of plant nutrition.
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