Soil Bacterial Biodiversity is Driven by Long-term Pasture Management, Poultry Litter, and Cattle Manure Inputs

Soil microorganisms are important for maintaining soil health, decomposing organic matter, and recycling nutrients in pasture systems. However, the impact of long-term conservation pasture management on soil microbial communities remains unclear. Therefore, soil microbiome responses to conservation pasture management is an important component of soil health, especially in the largest agricultural land-use in the U.S. The aim of this study was to identify soil microbiome community differences following 13-years of pasture management [hayed (no cattle), continuously grazed, rotationally grazed with a fenced, un-grazed and unfertilized buffer strip, and a control (no poultry litter or cattle manure inputs)].土壤微生物在维持草地生态系统的土壤健康、分解有机质以及循环养分方面发挥着重要作用。然而，长期保护性草地管理措施对土壤微生物群落的影响仍不明确。因此，土壤微生物组（soil microbiome）对保护性草地管理措施的响应是土壤健康的重要组成部分，尤其在美国规模最大的农业用地类型中。本研究旨在明确13年草地管理措施实施后土壤微生物组群落的差异，所涉及的管理方案包括：刈割（无家畜放牧）、连续放牧、设置围栏封育且未放牧、未施肥缓冲带的轮牧模式，以及对照组（无家禽垫料或牛粪肥输入）。