Effects of straw return on soil carbon and nitrogen pools and on the diversity of microbial structures and functions.

Scientific and rational straw return can release certain nutrient resources and improve soil structure, thus affecting soil microbiological environments. Here, the effects of replacing some fertilizers with different amounts of straw return on soil carbon and nitrogen changes and microbial metabolism were conducted from 2018 to 2023 in the winter wheat (Triticum aestivum L.) cultivation area of the Loess Plateau drylands in Jinnan. Four treatments were used: S0 (0 % returned), S1/2 (50 % returned), S1 (100 % returned), and S2 (200 % returned), based on the range of straw yields for winter wheat production in the region (Straw was returned to the soil at a depth of 0–20 cm in all treatments). The results showed that the straw return increased the total organic carbon and nitrogen content and their fractions in the tillage soil of wheat fields, and the enhancement increased with the straw return increase. The soil total organic carbon/nitrogen, dissolved organic carbon/nitrogen, microbial..., , , # Effects of straw return on soil carbon and nitrogen pools and on the diversity of microbial structures and functions.

[https://doi.org/10.5061/dryad.ngf1vhj52](https://doi.org/10.5061/dryad.ngf1vhj52)

## Description of the data and file structure

The data consisted mainly of soil carbon pools, nitrogen pools- Microbial functional diversity data, and microbial community structure data.

### Files and variables

#### File: data.zip

**Description:** 

C: SOC (Soil Organic Carbon);   DOC (Dissolved Organic Carbon); MBC (Microbial Biomass Carbon); LFOC(Labile Fraction of Organic Carbon);  HFOC (Humin Fraction of Organic Carbon)

N: TN(Total Nitrogen); DON (Dissolved Organic Nitrogen); MBN (Microbial Biomass Nitrogen); LFON (Labile Fraction of Organic Nitrogen); HFON(Humin Fraction of Organic Nitrogen)

The data given for fungal genera and bacterium phyla. The microbes in these phyla and genera break down organic matter, cycling carbon and nitrogen. The microbial biomass is a key part o...,