Data of understorey herb diversity, soil nutrients and enzyme activities in a northern subtropical plantation with different moso bamboo invasion stages

The data collection site was located in the 70-year-old Quercus serrata plantation in Xiashu Forest, Zhenjiang City, Jiangsu Province. Sample plots were established using the spatio-temporal replacement method by selecting three sample strips parallel to the invasion direction according to the different degrees of moso bamboo invasion in the Quercus serrata plantation forests, and three 10 × 10 m sample plots were arranged in each sample strip, for a total of nine sample plots. Four herb community surveys and soil sampling were conducted in April 2021 (spring), July 2021 (summer), October 2021 (autumn) and January 2022 (winter). Herb community diversity was calculated using R studio, and soil metrics (pH, nutrients and enzyme activities) were investigated using standard experimental methods. Random Forest Model Code and Sample Data数据采集点位设于江苏省镇江市下蜀林场内一处树龄70年的枹栎（Quercus serrata）人工林。本研究采用时空替代法设置样地：依据该枹栎人工林内毛竹入侵程度的差异，设置3条与入侵方向平行的样带，每条样带内布设3块10×10 m的样地，共计9块样地。分别于2021年4月（春季）、2021年7月（夏季）、2021年10月（秋季）及2022年1月（冬季）开展4次草本植物群落调查与土壤样品采集工作。草本群落多样性指数通过R Studio软件计算获得；土壤指标（pH值、养分含量及酶活性）采用标准实验方法进行测定。随机森林模型代码与样例数据