Data For: Diversifying and Perennializing Plants in Agroecosystems Alters Retention of New C and N from Crop

These data are soil, CO2 efflux, dissolved organic carbon leaching, and various other measures from a mesocosm experiment performed in long-term (12-years) crop diversity experiment near Hickory Corners, MI, United States.Briefly, we tracked dual-labelled (13C and 15N), isotopically enriched wheat (<em>Triticum aestivum</em>) residue <em>in situ</em> for two years as it decomposed in three agroecosystems: maize-soybean rotation (CS), maize-soybean-wheat plus red clover and cereal rye cover crops (CSW2), and spring fallow management with regeneration of natural grassland species (7-10 species; SF). We measured losses of wheat residue (Cwheat and Nwheat) in leached soil solution and greenhouse gas fluxes, as well as how much was recovered in microbial biomass and bulk soil at 5-cm increments down to 20 cm. COLLECTION INFORMATION: <strong>Time period(s):</strong> 2011 to 2013 <strong>Location(s):</strong> Hickory Corners, MI, United States <strong>Long-term Experiment:</strong> Cropping Biodiversity Gradient Experiment <strong>Further Site Information: </strong>https://lter.kbs.msu.edu/research/long-term-experiments/biodiversity-gradient/

本数据集涵盖土壤、二氧化碳通量（CO₂ efflux）、溶解性有机碳淋溶及其他多项观测指标，数据源自美国密歇根州希科里科纳斯（Hickory Corners, MI）附近一项为期12年的长期作物多样性试验中的中宇宙试验（mesocosm）。
简要而言，本研究对双标记（¹³C与¹⁵N）的同位素富集型普通小麦（<em>Triticum aestivum</em>）残体开展了为期两年的原位（<em>in situ</em>）追踪，观测其在三种农业生态系统中的分解过程：玉米-大豆轮作（CS）、玉米-大豆-小麦配施红三叶草与禾谷类黑麦覆盖作物（CSW2），以及春季休耕并自然恢复7-10种草原本土物种的管理模式（SF）。
本研究测定了淋溶土壤溶液中小麦残体的碳（C小麦）与氮（N小麦）流失量及温室气体通量，同时测定了以5 cm为间隔分层至20 cm深度的原状土壤及微生物生物量中的残体回收率。
数据采集信息：
<strong>时间范围：</strong>2011年至2013年
<strong>采样地点：</strong>美国密歇根州希科里科纳斯（Hickory Corners, MI）
<strong>长期试验名称：</strong>作物生物多样性梯度试验
<strong>更多站点信息：</strong>https://lter.kbs.msu.edu/research/long-term-experiments/biodiversity-gradient/