Environmental factors of carbon and nitrogen accumulation in rice and dryland soil revealed

The stability of the organic matter of paddy soil is essential for solving food security, mitigating climate change, and realizing the sustainable use of land resources.

The researchers conducted a global integrated analysis of the organic carbon and total nitrogen content and reserves of paddy soils at 578 points, and compared them with adjacent dryland soils to discuss the impact of soil and environmental factors on the carbon and nitrogen reserves of the two A quantitative analysis was carried out to reveal the specific mechanism and process of carbon and nitrogen sequestration.

The results showed that the average carbon storage of dry land and paddy soil in the 0-35 cm soil layer was 31 tons/ha and 47 tons/ha, respectively, and the nitrogen storage was 2.

Ge Tida, a researcher at the Institute of Subtropical Ecology, told China Science Daily that despite long-term and frequent human management, the organic carbon and nitrogen stored in hydroponic anthropogenic soil are still much higher than that of adjacent dry land.

Related paper information: org/10.