文献类型：期刊文献

英文题名：Response of Fine Root ProductionMortality and Turnover to Simulated Nitrogen Deposition in the Abiesgeorgei (Orr) Forest in the Jiaozi Snow Mountains National Nature Reserve, Southwest China

作者：Yuan, Jiyou[1] Peng, Mingchun[1] Tang, Guoyong[2] Wang, Yun[3]

第一作者：Yuan, Jiyou

机构：[1] School of Ecology and Environmental Sciences, Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Yunnan, Kunming, 650091, China; [2] Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650233, China; [3] Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi, 276000, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230305240)

语种：英文

外文关键词：Carbon - Design of experiments - Dynamics - Forestry - Nitrates - Phosphorus - Plants (botany) - Sodium nitrate - Tropics

摘要：Increased nitrogen deposition has important effects on below-ground ecological processes. Fine roots are the most active part of the root system in terms of physiological activity and are the main organs for nutrient and water uptake by plants. However, there is still a limited understanding of how nitrogen deposition affects the fine root dynamics in subtropical Abies georgei (Orr) forests. Consequently, a three-year field experiment was conducted to quantify the effects of three forms of nitrogen sources ((NH4)2SO4, NaNO3, and NH4NO3) at four levels (0, 5, 15, and 30 kg N·ha-1·yr-1) on the fine root dynamics in Abies georgei forests using a randomized block-group experimental design. The first year of nitrogen addition did not affect the first-grade fine roots (FR1, 0 ? 2023, The Authors. All rights reserved.