Document Type : ORIGINAL RESEARCH ARTICLE

Authors

1 Department of Environmental Science and Disaster Management, Faculty of Science, Noakhali Science and Technology University, Noakhali, Bangladesh

2 Tropical Forests and People Research Centre, University of the Sunshine Coast, Maroochydore, Queensland, Australia

Abstract

Soil salinity is considered as one of the major challenges in coastal agriculture in Bangladesh yet geographical extent of soil salinity and nutrients status have received little or no attention. This study investigated the patterns of soil salinity, total nitrogen, phosphorous, potassium and sulfur between agricultural and fallow land along a 90 km distance from the coastline in Noakhali, Bangladesh. Soil samples were collected from three depths (0, 10, and 30cm) in four different locations from coastline towards inland (0, 30, 60, and 90km) following a systematic random sampling. Soil salinity and total nitrogen, phosphorous, potassium and sulfur were analyzed by fitting fixed effect linear models for a full factorial design and then inverse distance weighted interpolation technique was applied to map spatial patterns of selected soil parameters. Highest soil salinity and sulfur were recorded in surface soils at coastline (0 km), whereas least in 90 km far from coastline. Soil depth resulted significant differences in phosphorous, potassium and showed significant interactions among the distant points. This study delineates the soil nutrients patterns and salinity as baseline information to explain salinity driven soil nutrient dynamics in coastal region of Bangladesh.

Graphical Abstract

Soil salinity and nutrients pattern along a distance gradient in coastal region

Highlights

  • Highest soil salinity and sulfur were recorded in surface soils at 0km distance from coastline, whereas, least in 90 km from coastline;
  • Soil nutrients are comparatively higher in the topsoil than the deep soil for both agricultural and fallow land;
  • Soil depth resulted significant differences in P, K and showed significant interactions among the distances from the coastline;
  • The present study can be used as baseline data source to explain salinity driven soil nutrient dynamics in coastal Bangladesh.

Keywords

Main Subjects

Letters to Editor

GJESM Journal welcomes letters to the editor for the post-publication discussions and corrections which allows debate post publication on its site, through the Letters to Editor. Letters pertaining to manuscript published in GJESM should be sent to the editorial office of GJESM within three months of either online publication or before printed publication, except for critiques of original research. Following points are to be considering before sending the letters (comments) to the editor.

[1] Letters that include statements of statistics, facts, research, or theories should include appropriate references, although more than three are discouraged.
[2] Letters that are personal attacks on an author rather than thoughtful criticism of the author’s ideas will not be considered for publication.
[3] Letters can be no more than 300 words in length.
[4] Letter writers should include a statement at the beginning of the letter stating that it is being submitted either for publication or not.
[5] Anonymous letters will not be considered.
[6] Letter writers must include their city and state of residence or work.
[7] Letters will be edited for clarity and length.

CAPTCHA Image