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Shvoong Home>Science>Agronomy - Agriculture>Analysis and Evaluation of Soil Organic Matter Dynamics at a Little Region Scale Summary

Analysis and Evaluation of Soil Organic Matter Dynamics at a Little Region Scale

Article Summary   by:TsingHua     Original Author: SCIENTIA GEOGRAPHICA SINICA
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General changes of soil organic matter content and its variations under different utilizing patterns after reclamation were analyzed and evaluated by the dynamic and comperative methods at the Qianyanzhou Experimental Station of Chinese Academy of Sciences. The results show that the soil organic matter content of Qianyanzhou Experimental Station which has a typical characteristic of low hilly red soil of the southern China was generally a tendency towards increase with a mean change from 14. 78 g/kg to 15. 13 g/kg after 11-year's reclamation. The organic matter content of sandy red soil, paddy soil, and chao soil, which were a low native organic matter content, increased by 1. 41 g/kg, 2. 44 g/kg and 2. 50 g/kg, respectively; yet those of silty red soil and umbrihumus chao soil, which were a high native organic matter content, decreased by 1. 78 g/kg and 3. 98 g/kg, respectively. The changes of soil organic matter content were also different from the utilizing patterns with an increase of paddy field, vegetable land and grassland by 2. 04 g/kg, 4. 01 g/kg, 7. 32 g/kg, and a decrease of upland, Chinese fir land and uncropped land by 4. 93 g/kg, 2. 98 g/kg, 3. 68 g/kg, respectively. The soils of different slope positions, with a different soil type and utilizing characteristics, have a different organic matter storages by the most of artificial forest land on the top, middle of paddy fields on the lower and gentle slopes and vally plains, lowest of upland and orchard soils on the hill sides.
Published: April 30, 2000   
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