Morphology and Properties of Some Extremely Acid Lowland Soils in Southern Thailand

Item

ชื่อเรื่อง

Morphology and Properties of Some Extremely Acid Lowland Soils in Southern Thailand

ชื่อเรื่องอื่น/ชื่อเรื่องเทียบเคียง

สัณฐานวิทยาและคุณสมบัติของดินที่ลุ่มและเป็นกรดรุนแรงบางชนิดในภาคใต้ของประเทศไทย

ผู้สร้าง/เจ้าของผลงาน

Irb Kheoruenromne
Anchalee Suddhiprakarn
Attasit Wongmaneeroj

หัวเรื่อง

Morphology
Soil structure

คำอธิบายรายละเอียดของเอกสาร

Extremely acid lowland soils have been known, in general, as acid sulfate soils. Many studies have been conducted on these soils in the Lower Central Plain where their extensive area exists." However, these soils can also be found along the Southeast Coast and in the coastal areas of Peninsular Thailand in association with Organic Soils (Histosols)" where accumulation of organic materials in the soils is uncommonly excessive." Some of these ex- tremely acid lowland soils appeared to have recently passed through a stage of being Organic Soils before developing further, due to drainage and oxidation, to become mineral acid sulfate soils." Therefore, one can expect to see some layers of the organic materials preserved in the profiles of acid sulfate soils in these two areas (Southeast Coast and Peninsular Thailand). A similar situation was reported also for some acid sulfate soil profiles in the Central Plain.3 Under a tropical monsoonal grading towards tropical rain forest climatic regime', acid sulfate soils in the Southeast Coast and Peninsular Thailand can be expected to develop faster than the ones in the Central Plain due to a higher and better distribution of rainfall. This should have some bearing on their characteristics and utilization.

สรุปเนื้อหา/บทคัดย่อ

A study on morphology and properties of some extremely acid lowland soils were carried out on three soils areas: Munoh series, Ra-ngae series and Thon Sai series in Narathiwat Province, southern Thailand. Method of soil characterization comprising pedon analysis and soil sample analysis based on standard method was applied.

Results of the study revealed that the three soils possess a similar profile model and morphology with that of acid sulfate soils in the Central Plain. However, these three soils are more sandy (sandy clay loam to loamy sand), richer in organic matter content (6.2-72.1 g/kg) and markedly lower in available potassium (10-35 mg/kg) than most of the acid sulfate soils in the Central Plain are. The base reserves in these soils are very low whereas their extractable acidity is very high (up to 126.5 cmol/kg). The condition in these soils indicates a low buffering capacity and the effect of their acidity on crop cultivation is generally serious.

ผู้จัดพิมพ์/สำนักพิมพ์

National Research Council Thailand

วัน/เดือน/ปีที่ผลิตเอกสาร

1993

วันที่บันทึกข้อมูล

2025-06-01

สิทธิ์การเข้าถึง

This document is distributed under the terms of the Creative Commons Attribution 4.0 International (CC-BY-NC-ND 4.0) and copyright of the Chulachomklao Royal Military Academy

ประเภท

Text

รูปแบบ

pdf

ขนาดหรือจำนวนของเอกสาร

16 leaves

ต้นฉบับ/แหล่งที่มา

Journal of the National Research Council of Thailand Vol. 25 No. 1 January-June 1993, 19-34
Library and Information Center, National Institute of Development Administration

ภาษา

en
th

ขอบเขต

สื่อและเอกสารเผยแพร่

ลิขสิทธิ์

This is an open access document. You are free to Share and Use under the terms of the Creative commons license.

เจ้าของลิขสิทธิ์

Ministry of Higher Education, Science, Research and Innovation

สัญญาอนุญาตในการเข้าถึง

This document is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Media

JNRC_025_001_2536-26-41.pdf