Soil respiration and microbial biomass in a savanna parkland landscape : spatio-temporal variation and environmental controls /
(C) and nitrogen (N) in this region. The objective of
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1998.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (C) and nitrogen (N) in this region. The objective of abiotic factors at this site. Larger pool sizes and accompanied by higher SMB and potential C and N and potential C mineralization rates in all landscape and rainfall accounted for approximately 70% of the biogeochemical changes inherent in this process may be both a consequence and a direct cause of vegetation combinations of soil temperature, soil water content, controlled primarily by temperature and rainfall, and distinct and not synchronous with that of soil dynamics in these ecosystems. elements, implying that the increase in soil elements, with highest rates during months with >30 mm faster turnover rates for soil organic C and total N grassland-to-woodland succession must recognize that grassland-to-woodland succession. Efforts to manage in remnant grasslands [] wooded landscape elements [] In southern Text, subtropical woodlands dominated by phics. in this region. In addition, the importance of soil indicate that soil fertility is enhanced following Irrigation increased soil respiration but reduced SMB landscape heterogeneity and woody plant encroachment mineralization rates compared to grasslands, Na-fixing woody legumes have largely replaced areas non-irrigated landscape elements. These relationships of precipitation. Temporal variation in SMB was less partially attributable to enhanced microbial activity. potential C and N mineralization rates in relation to respiration and nutrient cycling may be secondary to soil respiration in wooded landscape elements was respiration rather than heterotrophic respiration. respiration was due to root respiration. Linear respiration, soil microbial biomass (SMB), and respiration, suggesting that seasonal variation in scale analyses indicating soil respiration is Soil respiration varied seasonally in all landscape soil respiration was driven by changes in root soil respiration was significantly greater in 2 -1 h structure could modify the biogeochemistry of carbon suggesting the increased soil respiration was that were once grassland. This change in ecosystem this study was to quantify variation in soil variation in soil respiration in both irrigated and was evaluated with an irrigation experiment. Annual water as a control over these biogeochemical processes were consistent with previous ecosystem- and global- |
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| Item Description: | "Major subject: Rangeland Ecology and Management". Vita. |
| Physical Description: | x, 102 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references (leaves 57-65). |