N Cycling through Succession at Blandy Experimental Farm

These data were collected from 2017-2021 at Blandy Experimental Farm. Blandy Experimental Farm (BEF), located in Boyce, Clarke County, Virginia (39.06, -78.07), is a 300-hectare research, education, and outreach field station operated by the University of Virginia. BEF has two replicate chronosequences consisting of adjacent fields in three successional stages – early, mid, and late. All fields were formerly used for agriculture and were abandoned in 2001 and 2003 (early), 1986 and 1987 (mid), and prior to 1910 and 1920 (late). 5 plots within each field (total of 30 plots) were repeatedly sampled for soil and vegetation N characteristics, including total soil C and N, net N mineralization and nitrification, soil leaching potential, soil inorganic N, live foliar N, litter N, and 15N natural abundance. See metadata in each file for specific information about each dataset.本数据集采集于2017年至2021年，采集地点为布兰迪实验农场（Blandy Experimental Farm, BEF）。布兰迪实验农场位于弗吉尼亚州克拉克县博伊斯镇，地理坐标为39.06, -78.07，占地300公顷，是由弗吉尼亚大学运营的集科研、教育与推广服务于一体的野外工作站。该农场设有两组重复的时间序列样地（chronosequences），包含处于早期、中期、晚期三个演替阶段的相邻样地。所有样地此前均用于农业生产，其中早期演替样地于2001年、2003年弃耕，中期演替样地于1986年、1987年弃耕，晚期演替样地则于1910年、1920年之前弃耕。每个样地内设置5个采样区，总计30个采样区，针对土壤与植被的氮素特征开展重复采样，测定指标包括土壤总碳、总氮含量，净氮矿化与硝化作用，土壤淋溶潜能，土壤无机氮含量，活体叶片氮含量，枯落物氮含量以及天然15N丰度（15N natural abundance）。各数据集的详细信息请参见对应文件中的元数据（metadata）。