2003 Fiscal Year Final Research Report Summary
Development of a desertification index
| Project/Area Number |
13490025
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
広領域
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
SHINODA Masato Tokyo Metropolitan University, Graduate School of Science, Associate professor, 理学研究科, 助教授 (30211957)
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| Co-Investigator(Kenkyū-buntansha) |
田 少奮 日本大学, 文理学部, 助手
TSUNEKAWA Atsuhi University of Tokyo, Graduate School of Agricultural and Life Science, Associate professor, 大学院・農学生命科学研究科, 助教授 (60227452)
OYAMA Shuichi Tokyo Metropolitan University, Graduate School of Science, Assistant professor, 理学研究科, 助手 (00322347)
TIAN Shao-fen Nihon University, College of Humanities and Sciences, Research Assistant
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| Project Period (FY) |
2001 – 2003
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| Keywords | desertification / arid region / biological productivity / vegetation index / Kazakhstan / Mongolia / Niger |
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| Research Abstract |
The present study aimed to develop a world desertification index by combining satellite-and ground-observed data. This index was based on net primary productivity (NPP) of vegetation as a quantitative measure, because the previous in dices had been lack in objectivity and worldwide applicability. The major results are summarized as follows.
1 Based on ground-truth data collected in Mongolia and Kazakhstan, we developed a model estimating preciously Asian NPP with satellite data This model incorporates a simple submodel estimating soil moisture with only daily precipitation and temperature.
2 Our automatic observations of NPP and heat/moisture fluxes conducted in Mongolia and Kazakhstan showed that NPP was strongly correlated with water stress on the seasonal basis.
3 We compared potential NPP, based on climate, and actual NPP, and identified potential desertification/land degradation hot spots, including the region from northeast China and the Huabei Plain to the Loess Plateau, the region near the border between Russia and Kazakhstan, and central India. We also identified vegetation degradation regions such as northeast Kazakhstan and Betpak-Dala (southwest of Lake Balkhash) not included in the GLASOD soil degradation database.
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