Effects of soil pH and texture on soil carbon and nitrogen in soil profiles under different land uses in Mun River Basin, Northeast Thailand.

ABSTRACT: Soil carbon and nitrogen are essential factors for agricultural production and climate changes. A total of 106 soil samples from three agricultural lands (including two rice fields and one sugarcane field) and four non-agricultural lands (including two forest lands, one wasteland and one built-up land) in the Mun River Basin were collected to determine soil carbon, nitrogen, soil pH, soil particle sizes and explore the influence of pH and soil texture on soil C and N. The results show that total organic carbon (TOC) and nitrogen (TON) contents in topsoil (TOC: 2.78 ~ 18.83 g kg-1; TON: 0.48 ~ 2.05 g kg-1) are much higher than those in deep soil (TOC: 0.35 ~ 6.08 g kg-1; TON: <0.99 g kg-1). In topsoil, their contents of forest lands and croplands (TOC: average 15.37 g kg-1; TON: average 1.2

SUBMITTER: Zhou W 

PROVIDER: S-EPMC6798867 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature