Study on Soil Nutrient Characteristics of Different Cover Soil Thicknesses on Bare Rocky Ground

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Zhang, Haiou^1,2 ; Han, Jichang^1 ; Wang, Huanyuan^1

Shaanxi Land Construction Group, Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources of China, Xi'an, Shaanxi, 710075, China^1

Institute of Water Resources and Hydro-Electric Engineering, Xi'An University of Technology, Xi'an

710048, China^2

关键词: Different thickness;    Distribution characteristics;    Land consolidations;    Negative correlation;    Soil organic matters;    Soil total nitrogen;    Surface aggregation;    Total nitrogen content;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022140/pdf
DOI  :  10.1088/1755-1315/170/2/022140

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to study the relationship between different soil cover thickness and soil organic matter and total nitrogen in floodplain after land consolidation, spatial distribution characteristics of six soil cover thicknesses and soil carbon and nitrogen in the field plot experiment from 2015 to 2017. The results showed that soil organic matter and total nitrogen content decreased with soil depth under different thickness of soil cover, soil depth had a negative correlation with soil organic matter and total nitrogen content, and soil nutrient had apparent surface aggregation. When soil thickness was 50-60cm (C50, C60), soil organic matter and total nitrogen content were the highest among all soil depths, indicating that soil organic matter is one of the key ecological factors affecting soil total nitrogen. Therefore, for land reclamation of floodplain, the soil thickness of 50-60cm is the best, with good fertilizer-holding effect.