Patterns and controlling factors of soil microbial necromass carbon in global ecosystems

Microbial necromass is an important source of soil organic C (SOC) in terrestrial ecosystems. However, few studies have explored the distribution of microbial necromass and its contribution to SOC along the soil profile in global scale. Here, we collected a global dataset (2411 samples from 216 papers) of soil microbial necromass in 0–100 cm depths from wetlands, farmlands, grasslands and forestlands.