A study of aquic conditions in a microtoposequence of seasonally wet soils on the Texas Coast Prairie /
(Typic Endoaqualf), were evaluated in the central Texas Gulf
| Main Author: | |
|---|---|
| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
|
| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (Typic Endoaqualf), were evaluated in the central Texas Gulf above 50 cm were relict features either transported or formed and exhibited different perched and groundwater tables within associated with current as well as perhaps previous aquic at the intermound site caused the more hydrologically below 100 cm. This corresponds with decreased water movement between the redoximorphic features and the frequency and but features were observed in portions of the unsaturated characteristics based on microtopographic landform positions. Coast Prairie, northwest of Houston, from the upper to the Committee on Aquic Moisture Regimes (ICOMAQ) were to be conditions of three soils with different wetness conditions were evaluated for three pedons and related to conditions will require longer periods of monitoring with conditions. Redoximorphic features generally supported confined water table evident from a hydrostatic head was criteria for aquic conditions as defined by the International depression, an intermound, and a pimple mound. The proposed direction of saturation and reduction. The criteria of aquic each soil. The mound site exhibited a continuous groundwater exhibited by the piezometer at 497 cm. The depression site exhibited seasonal saturation and reduction throughout the hydrostatic head occurring in the piezometer at 433 cm. identified by 1) redoximorphic features and 2) measurement of in place during a previous wetter moisture regime. The inferences used to predict these conditions. Interpretations laboratory analyses were used to establish a relationship lower topographic positions. During a 19-month period, each meteorological data for establishing more definitive morphological properties in order to draw inferences observed saturation and reduction in the upper soil profiles, occurred between 26 and 136 cm. At the intermound site a of redoximorphic features are complicated by the presence of of the different landform positions were seasonally saturated Paleudalf), intermound (Typic Natraqualf), and depression Positive correlation of redoximorphic features with aquic presence of a natric horizon and intensive crayfish activity profile where neither saturation nor reduction was observed. profile with a confined water table evident from a reduction potentials suggested Fe reduction was occurring in regarding wetness conditions. Taxonomic classification of the relationships. relict features in some areas. Morphological properties and restrictive physical characteristics of the subsoil. saturation and reduction to locally verify morphological Saturation at the intermound occurred at the surface and table with saturation below 50 cm and reduction below 100 cm. The landform positions included a closed, seasonally ponded The purpose of this study was to investigate the aquic the upper 2 m. During periods of saturation, low oxidation Therefore the Fe-Mn nodules and concretions of the mound site Therefore, redoximorphic features in the depression are three pedons representing the toposequence of mound (Oxyaquic within the portion of the profile where a natric horizon |
|---|---|
| Item Description: | "Major subject: Soil Science". Vita. |
| Physical Description: | xiii, 176 leaves : illustrations, maps ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |