DOI: 10.5061/dryad.wwpzgmszd
title: Growth and litter decomposition indexes of <em>Leymus chinensis</em> with different genotype composition under two levels of N addition

description: To explore how nitrogen (N) addition affects nutrient cycle (chemistry
 composition and litter decomposition) of the grassland dominant species
 and the diversity responses within a species, a two-stage experimental
 design was carried out using three Leymus chinensis genotypes: first
 exposing four genotypic composition treatments (single genotype a, b and
 c; 1/3 genotype a +1/3 genotype b +1/3 genotype c) to two N addition level
 (2.5 and 10 g N m⁻² a⁻¹), and then assessing litter decomposition
 processes for each of four genotypic composition treatments by a
 reciprocal litter decomposition experiment between two N addition level.
 This data set is original data, including initial litter decomposition,
 chemical composition (leaves and litter), and soil composition. These data
 aim to provide experimental evidence for the hypothesis that intraspecific
 genetic diversity can predict and enhance the resilience of grassland
 ecosystems to nitrogen enrichment.
description: # Growth and litter decomposition indexes of *Leymus chinensis* with
 different genotype composition under two levels of N addition Dataset DOI:
 [10.5061/dryad.wwpzgmszd](https://doi.org/10.5061/dryad.wwpzgmszd) ##
 Description of the data and file structure A two-stage experimental design
 was carried out using three *Leymus chinensis* genotypes: first exposing
 four genotypic composition treatments (single genotype a, b and c; 1/3
 genotype a +1/3 genotype b +1/3 genotype c) to two N addition level (2.5
 and 10 g N m⁻² a⁻¹), and then assessing litter decomposition processes for
 each of four genotypic composition treatments by a reciprocal litter
 decomposition experiment between two N addition level. This data set is
 original data, including initial litter decomposition, chemical
 composition (leaves and litter), and soil composition. These data aim to
 provide experimental evidence for the hypothesis that intraspecific
 genetic diversity can predict and enhance the resilience of grassland
 ecosystems to nitrogen enrichment. Files included in the
 submission: initial_chemistry.csv, Original_decomposition.csv
 and soil_properties.csv **Data Description** The Raw Data file includes
 the following columns standard to the format. **Original decomposition
 data:** **Genotypic composition**:  it indicates the composition of four
 *L. chinensis* genotypes included in the experiment, which are single
 genotypes (genotype-a, genotype-b, genotype-c) and three genotypes
 (mixture). **N addition level**: indicates the two nitrogen addition
 levels included in the experiment, where 2.5 indicates that the nitrogen
 addition level is 2.5g N/ (m²·a¹) and 10 indicates that the nitrogen
 addition level is 10g N/ (m²·a¹). **Decomposition condition**: indicates
 the position where the litter decomposes, where home indicates that the
 litter decomposes in its own soil, that is, the litter treated by N2.5
 decomposes in the soil treated by N2.5; And away means that the litter is
 decomposed in another nitrogen-treated soil, that is, the litter treated
 by N2.5 is decomposed in the soil treated by N10. **Initial mass (C, N,
 P)**: indicates the initial mass (C, N, and P content) of litter before
 decomposition. **Remaining mass (C, N, P)**: indicates the residual mass
 Cc, N, and P content) after litter decomposition. **Mass (C, N) loss**:
 indicates the loss value of mass (C and N) in litter decomposition
 processes. **Mass (C, N) loss percentage**: indicates the loss percentage
 of mass (C and N) in litter decomposition, the formula is (initial mass (C
 and N)-remaining mass (C and N))/initial mass (C and N). **Initial
 chemical composition :** **Genotypic composition**:  it indicates the
 composition of four *L. chinensis* genotypes included in the experiment,
 which are single genotypes (genotype-a, genotype-b, genotype-c) and three
 genotypes (mixture). **N addition level**: indicates the two nitrogen
 addition levels included in the experiment, where 2.5 indicates that the
 nitrogen addition level is 2.5g N/ (m²·a¹) and 10 indicates that the
 nitrogen addition level is 10g N/ (m²·a¹). **Initial C (N) content**:
 indicates the initial mass (C and N content) of litter or leaf. **Initial
 soil composition:** **Genotypic composition**: indicates the composition
 of four *L. chinensis* genotypes corresponding to the soil in the
 experiment, which are single genotypes (genotype -a, genotype -b, genotype
 -c) and three genotypes (mixture). **N addition level**: indicates the two
 nitrogen addition levels to soil included in the experiment, where 2.5
 indicates that the nitrogen addition level is 2.5g N/ (m²·a¹) and 10
 indicates that the nitrogen addition level is 10g N/ (m²·a¹). **Soil
 urease (β-glucosidase and acid phosphatase) activity**: indicates soil
 urease, β-glucosidase, and acid phosphatase activities. **Chao
 index-bacteria**: indicates the Chao index of soil bacteria. **Shannon
 index (bacteria)**: indicates the Shannon index of soil bacteria.
 **Simpson index (bacteria)**: indicates the Simpson index of soil
 bacteria. ## Code/software The data we provide is original data, and no
 software or package is used for calculation.