1989 Fiscal Year Final Research Report Summary
Improvement of Biological Productivity in Tropical Waste Lands
| Project/Area Number |
63041110
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| Research Category |
Grant-in-Aid for Overseas Scientific Survey.
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Institution | Faculty of Science, Osaka City University |
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Principal Investigator |
YODA Kyoji Faculty of Science, Osaka City University Professor, 理学部, 教授 (80046937)
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| Co-Investigator(Kenkyū-buntansha) |
KANZAKI Mamoru Faculty of Science, Osaka City University Instructor, 理学部, 助手 (70183291)
NAGANAWA Takahiko Faculty of Agriculture, Shimane University Instructor, 農学部, 助手 (80183531)
SAKURAI Katsutosi Faculty of Agriculture, Kochi University Associate Prof., 農学部, 助教授 (90192088)
YONEDA Tsuyoshi Faculty of Education, Osaka Educational Univ. Associate Prof., 教育学部, 助教授 (40110796)
SATO Haruo Faculty of Agriculture, Osaka Prefecture Univ. Lecturer, 理学部, 講師 (00081521)
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| Project Period (FY) |
1988 – 1989
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| Keywords | Eucalyptus camaldulensis / Fast-growing species / Productivity / Reforestation / Respiration rate / Soil conditions / Thailand / Transpiration rate |
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| Research Abstract |
Soil-plant system in the fast-growing Eucalyptus camaldulensis plantations were monitored for 6 years in experimental plots set on tropical waste land after tin mining and sifting cultivation. E. camaldulensis could established and grew vigorously except sand sediment area after tin mining where the root penetration was seriously inhibited by dense sand layer. In this area, mulching by Imperata grass and the clay soil dressing in transplanting hole increased the probability of establishment and the growth rate of E. camaldulensis significantly.
At least, with in one rotation time, no serious soil fertility degradation was observed in E. camaldulensis plantation. However, its high transpiration rate and water consumption will bring a deterioration of the water conditions and physical structure of the soil in loamy sand soil of northeast Thailand.
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