DOI: 10.5061/dryad.z612jm6p6
title: Data from: Foliar fungal pathogen inhibition increases ecosystem carbon sequestration independently of nitrogen enrichment in a Tibetan alpine meadow

description: Anthropogenically caused nitrogen (N) enrichment may stimulate both
 photosynthetic carbon (C) fixation and infection of foliar pathogens.
 However, the interactive effects of N input and foliar fungal pathogens on
 the ecosystem C cycling are poorly understood. Using a 6-year field
 experiment with N input and fungicide application in a Tibetan alpine
 meadow, we examined how N enrichment and foliar fungal pathogens influence
 ecosystem C sequestration independently and in combination, possibly
 resulting in interactions between N enrichment and fungal pathogens.
 Nitrogen input increased the gross ecosystem productivity (GEP) and
 ecosystem respiration (ER) through increasing plant biomass and foliar N
 content, but did not affect net ecosystem productivity (NEP). Fungicide
 application increased GEP and NEP by relieving foliar pathogen infection
 but did not affect ER, resulting in net increased ecosystem C
 sequestration. However, no significant interactive effects between N input
 and fungicide application were detected. Synthesis. These results indicate
 that foliar fungal pathogens are critical biotic factors influencing
 ecosystem C sequestration in alpine ecosystems, independent of N input.
 This study emphasizes the important role of biotic factors in regulating
 ecosystem functions.
description: # Foliar fungal pathogen inhibition increases ecosystem carbon
 sequestration independently of nitrogen enrichment in a Tibetan alpine
 meadow Dataset DOI: [10.5061/dryad.z612jm6p6](10.5061/dryad.z612jm6p6) ##
 Description of the data and file structure Data for Foliar fungal
 pathogen inhibition increases ecosystem carbon sequestration independently
 of nitrogen enrichment in a Tibetan alpine meadow ### Files and variables
 #### File: Fuwei\_Wang\_et\_al.\_JE.zip **Description:**  This
 "Fuwei_Wang_et_al._JE.zip" file contain two ".xlsx"
 file name "Soil and plant properties" and "C_flux".
 Date of data collection: 2021 (the experiment was established from 2016).
 Geographic location of data collection: at the eastern Tibetan Plateau
 (33°38′N, 101°53′E) of Maqu county, Gansu Province, China. **DATA-SPECIFIC
 INFORMATION FOR: Soil and plant properties.xlsx** * Plot: ID of
 4 treatment plots - Block:the experiment is a randomized block design and
 there are 5 replicate blocks. * Treatment: Control, F-fungicide
 application, N-nitrogen addition, F+N-the combination of fungicide
 application and nitrogen addition, - Fungicide: whether this plot was
 treated with fungicide application; ambient-no fungicide was added,
 Fungicide-fungicide was added * Nitrogen: whether this plot was treated
 with nitrogen addition; ambient-no nitrogen was added, Nitrogen-nitrogen
 was added - IN (mg/kg): inorganic nitrogen content * NO3 (mg/kg): NH4+-N
 content - pH: soil pH value * FoliarN (mg/kg): foliar N content -
 Pathogen_load(%): community weight mean value of pathogen infection
 severity of leaves in each plot * AGB(g/m2): above ground biomass in each
 plot - RB(g/m2): root biomass in each plot * GB (g/m2): graminoid
 biomass in each plot - FB (g/m2): forb biomass in each plot * ave_NEP
 (μmol CO2/m2/s): average net ecosystem productivity - ave_ER (μmol
 CO2/m2/s): average ecosystem respiration * ave_GEP (μmol CO2/m2/s):
 average gross ecosystem productivity - Richness: speceis number in each
 plot * Shannon:Shannon diversity **DATA-SPECIFIC INFORMATION FOR:
 C_flux.xlsx** * Plot: ID of 4 treatment plots - Block:the experiment is a
 randomized block design and there are 5 replicate blocks. * Treatment:
 Control, F-fungicide application, N-nitrogen addition, F+N-the combination
 of fungicide application and nitrogen addition, - Fungicide: whether this
 plot was treated with fungicide application; ambient-no fungicide was
 added, Fungicide-fungicide was added * Nitrogen: whether this plot was
 treated with nitrogen addition; ambient-no nitrogen was added,
 Nitrogen-nitrogen was added - Time: different sample time for C_flux * NEP
 (μmol CO2/m2/s): net ecosystem productivity - ER (μmol CO2/m2/s):
 ecosystem respiration * GEP (μmol CO2/m2/s): gross ecosystem productivity