Dataset DOI: 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.