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，采集地点为布兰德实验农场（Blandy Experimental Farm，以下简称BEF）。该农场位于美国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科研、教育与推广野外工作站。BEF设有两组重复的时间序列样地，每组样地由处于早期、中期、晚期三个演替阶段的相邻农田构成。所有样地原均为农用耕地，分别于2001年、2003年（早期演替阶段），1986年、1987年（中期演替阶段），以及1910年之前、1920年之前（晚期演替阶段）被弃耕。每个演替阶段的农田设置5个采样样地，总计30个样地，针对土壤与植被氮素特征开展重复采样，测定指标包括土壤总碳、总氮，净氮矿化与硝化作用，土壤淋溶潜能，土壤无机氮，活体叶片氮含量，枯落物氮含量以及天然¹⁵N丰度。各数据集的详细信息可查阅对应文件中的元数据。