GB/T 32725-2026 Collection,handling and storage of soil under aerobic conditions for the assessment of microbiological processes,biomass and diversity in the laboratory

Scope

This document provides standard methods for the aerobic collection, processing, and storage of soil samples used in laboratory analysis of microbial processes, biomass, and diversity.
This document describes how to minimize the impact of temperature, moisture content, and oxygen availability on aerobic processes, as well as the effects of soil particle grading, in order to promote reproducible laboratory measurements [1-2].
This document is applicable to assessing the impact of soil on microorganisms, invertebrates (e.g., survival, reproduction, growth, behavior), and plants (e.g., development, growth). The methods provided in this document are not suitable for soil processing that requires maintaining anaerobic conditions throughout. This document is applicable to temperate soils. Soils collected from extreme conditions (e.g., permafrost, tropical soils) may require special handling.
Note: This document does not provide standard methods for collecting, processing, and storing soil samples for assessing the structure and function of wild soil communities. Such standard methods are provided in ISO 23611-1 to ISO 23611-6.

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