Problems of Estimation of Microbial Biomass in Soddy-Podzolic Soils (Forests of the Protected Areas of Moscow Region)

IF 1.4 4区 农林科学 Q4 SOIL SCIENCE Eurasian Soil Science Pub Date : 2024-07-08 DOI:10.1134/s1064229324600416
O. V. Chernova, K. S. Duschanova, A. A. Petrosyan, T. E. Khomutova
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Abstract

The carbon content of microbial biomass in soil serves as one of the indicators of its biological activity and is often used in assessing the impact of anthropogenic activity and natural changes on the soil microbiome. Significant spatial and temporal variation of the indicator at the level of ecosystems, soil typological units, land use types, etc., makes it difficult to interpret the data obtained during mass monitoring. The aim of the study was to determine the background values of microbial biomass content in the surface sub-litter layer of soils in protected forests of the Moscow region. A reconnaissance survey of various podzolic soils typical for the region and differing in their genesis and texture and formed under mixed southern taiga forests in four protected natural territories was carried out. The soils of autonomous positions and the soils experiencing slight additional moistening were studied. The microbial biomass carbon was estimated by two methods: by the content of phospholipids and by substrate-induced respiration of microbial communities. Significant spatial variability of microbial biomass was noted both at the site level and at the ecosystem level. For the autonomous soils of similar classification positions and textures, it was comparable with the local variability at the experimental sites. The value of microbial biomass depended mainly on the character of soil water regime and soil texture, which largely determined the sorption capacity of the soil and its provision with biophilic elements, and also correlated with the richness of the ground cover providing the soil microbiome with nutrients. In order to obtain correct results of monitoring soil biological activity, unification of the methodology and depth of sampling in soils of background and anthropogenically transformed ecosystems is of great importance.

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水稻田土壤中微生物生物量的估算问题(莫斯科地区保护区的森林)
摘要 土壤中微生物生物量的碳含量是其生物活性的指标之一,通常用于评估人为活动和自然变化对土壤微生物组的影响。由于该指标在生态系统、土壤类型单元、土地利用类型等层面存在显著的时空差异,因此很难解释大规模监测所获得的数据。这项研究的目的是确定莫斯科地区受保护森林土壤表层底土中微生物生物量含量的背景值。在四个自然保护区的南部泰加混交林下形成的各种荚膜土壤在成因和质地上各不相同,是该地区的典型土壤。对自主位置的土壤和经历轻微额外湿润的土壤进行了研究。微生物生物量碳的估算有两种方法:磷脂含量和微生物群落的基质诱导呼吸。在地点和生态系统层面,微生物生物量都存在显著的空间差异。对于分类位置和质地相似的自治土壤来说,其空间变异性与实验地点的局部变异性相当。微生物生物量的数值主要取决于土壤水分状况和土壤质地,这在很大程度上决定了土壤的吸附能力及其对生物亲和元素的供给,同时也与为土壤微生物群提供养分的地表植被的丰富程度相关。为了获得正确的土壤生物活动监测结果,统一本底生态系统和人为改造生态系统土壤的取样方法和深度非常重要。
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来源期刊
Eurasian Soil Science
Eurasian Soil Science 农林科学-土壤科学
CiteScore
2.70
自引率
35.70%
发文量
137
审稿时长
12-24 weeks
期刊介绍: Eurasian Soil Science publishes original research papers on global and regional studies discussing both theoretical and experimental problems of genesis, geography, physics, chemistry, biology, fertility, management, conservation, and remediation of soils. Special sections are devoted to current news in the life of the International and Russian soil science societies and to the history of soil sciences. Since 2000, the journal Agricultural Chemistry, the English version of the journal of the Russian Academy of Sciences Agrokhimiya, has been merged into the journal Eurasian Soil Science and is no longer published as a separate title.
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