Pedosphere 11(2): 185--188, 2001
ISSN 1002-0160/CN 32-1315/P
©2001 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Role of organic matter in formation and stability of aggregates in mulberry plantation soils |
| LU Sheng-Gao |
| Collage of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029 (China) |
| ABSTRACT |
| The role of organic matter in the formation and stability of soil aggregates in mulberry plantation in the Hang-Jia-Hu Plain, northern Zhejiang Province, was evaluated in this study. A positive correlation was found between water-stable aggregate contents and organic matter contents in the mulberry plantation soils, which supported the hypothesis that organic matter was the main cementing agent in formation of aggregates. A close correlation was also found between stability of aggregate and organic matter contents. Regression analysis showed that total nitrogen content was also an indicator of water-stable aggregate content and stability. The aggregate size distribution indicated that the water-stable aggregates 1~0.25 mm in diameter were the major component of the aggregates in the mulberry plantation soils. The organic matter contents of aggregates ranging from 5 to 0.25 mm in diameter increased with the decrease of aggregate sizes, and the aggregates 1~0.25 mm in diameter had the maximum organic matter content. |
| Key Words: mulberry plantation soil, organic matter, water-stable aggregates |
| Citation: Lu, S. G. 2001. Role of organic matter in formation and stability of aggregates in mulberry plantation soils. Pedosphere. 11(2): 185-188. |
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