Spatial distribution characteristics of organic carbon and nitrogen in typical lake littoral wetland of Mu Us Sandland
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
This study was aimed to analyze the spatial distribution characteristics of soil organic carbon and nitrogen in soils from typical lake littoral wetland of Mu Us Sandland in Shaanxi Province and to provide a scientific basis for studying the way in which wetland ecosystem plays its special function in desertified environment. We collected soil samples from A-F zones along Baxiacaidang Lake and measured the contents of soil organic carbon, total nitrogen, organic nitrogen, nitrate nitrogen, and ammonium nitrogen. Soil organic carbon and nitrogen distribution were analyzed by ANOVA, Spearman correlation coefficients, and principal components analysis. At the depth of 0-10cm, the contents of soil organic carbon and total nitrogen would increase with the increasing water level. Regarding vertical distribution, except for ammonium nitrogen, the contents of soil organic carbon, total nitrogen, organic nitrogen, and nitrate nitrogen would all decrease with the increasing soil depth. The contents of soil organic carbon and total nitrogen were significantly and positively correlated with total phosphorus, volume weight of soil, soil moisture content, and water level. The content of soil ammonium nitrogen was significantly and positively correlated with total phosphorus, soil moisture content, volume weight of soil, total nitrogen, organic carbon, and water level. Between nitrate nitrogen and microbial biomass carbon, the correlation coefficient was 0.637; between nitrate nitrogen and microbial biomass nitrogen, the correlation coefficient was 0.617. The contents of soil organic carbon and nitrogen were not significantly correlated with soil clay content. The cumulative contribution rate of the three principal components was 76.15%. Total phosphorus, soil moisture content, volume weight of soil, and water level were major factors which can affect the spatial distribution of soil organic carbon and nitrogen distribution.
Keywords:
Project Supported:
Clc Number:
Mobile website
® 2024 All Rights Reserved
冀公网安备13010502002656号
冀公网安备13010502002656号