DOI: 10.5061/dryad.6m11c
title: Data from: Do microorganism stoichiometric alterations affect carbon sequestration in paddy soil subjected to phosphorus input?

description: Ecological stoichiometry provides a powerful tool for integrating
 microbial biomass stoichiometry with ecosystem processes, opening
 far-reaching possibilities for linking microbial dynamics to soil carbon
 (C) metabolism in response to agricultural nutrient management. Despite
 its importance to crop yield, the role of phosphorus (P) with respect to
 ecological stoichiometry and soil C sequestration in paddy fields remains
 poorly understood, which limits our ability to predict nutrient-related
 soil C cycling. Here, we collected soil samples from a paddy field
 experiment after 7 years of superphosphate application along a gradient of
 0, 30, 60, 90 (P-0 through P-90, respectively) kg P ha-1 y-1 in order to
 evaluate the role of exogenous P on soil C sequestration through
 regulating microbial stoichiometry. P fertilization increased soil total
 organic C and labile organic C by 1-14% and 4-96%, respectively, while
 rice yield is a function of the activities of soil β-1, 4-glucosidase
 (BG), acid phosphatase (AP) and the level of available soil P through a
 stepwise linear regression model. P input induced C limitation as
 reflected by decreases in the ratios of C:P in soil and microbial biomass.
 An ecoenzymatic ratio indicating microbial investment in C versus P
 acquisition, i.e., ln(BG):ln(AP), changed the ecological function of
 microbial C acquisition and was stoichiometrically related to P input.
 This mechanism drove a shift in soil resource availability by increasing
 bacterial community richness and diversity, and stimulated soil C
 sequestration in the paddy field by enhancing C degradation-related
 bacteria for the breakdown of plant-derived carbon sources. Therefore, the
 decline in the C:P stoichiometric ratio of soil microorganism biomass
 under P input was beneficial for soil C sequestration, which offered a
 "win-win" relationship for the maximum balance point between C
 sequestration and P availability for rice production in the face of
 climate change.
description: Data on Soil C-N-P-MS#
 14-0189R1-EA-2014-08-10Properties of soil
 chemistry on total orgnic carbon, nitrogen, and phosphorus in the
 experimental paddy field after 7 years of phosphorus application, also
 including soil labile carbon, soil available phosphorusData on Soil MBC-MBP-MS#
 14-0189R1-EA-2014-08-10Properties of soil
 chemistry on microbial biomass in the experimental paddy field after 7
 years of phosphorus application, including the following microbial biomass
 carbon (MBC) and microbial biomass phosphorus (MBP)Data on Soil C-P vis
 MBC-MBP-MS# 14-0189R1-EA-2014-08-10Properties of soil
 chemistry on C:P stoichiometry and microbial biomass, in the experimental
 paddy field after 7 years of phosphorus applicationData on Soil
 Eco-emzymatic activities-MS# 14-0189R1-EA-2014-08-10Properties of
 Eco-emzymatic activities on C and P dynamics, in the experimental paddy
 field after 7 years of phosphorus applicationData on Grain and
 Yield-MS# 14-0189R1-EA-2014-08-10Ice grain yield and
 yield components from the experimental paddy field in 2011 and
 2012.Data on Soil C
 Mineralization-MS# 14-0189R1-EA-2014-08-10Soil biochemical
 propoiety on C Mineralization for samples collected from the experimental
 paddy field after 7 years of phosphorus application.Data on Soil
 microorganisms-MS# 14-0189R1-EA-2014-08-10Bacterial community in
 soil for each P fertilized treatment and the relative number of sequences
 of the detected bacteria that are involved in the carbon (C) cycle in
 paddy field soil