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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/5346

Title: Mapping Soil Moisture in Darkhan’s Agricultural Land, Mongolia
Authors: Polpanich, Orn-uma
Davdai, Bulgan
Keywords: drought
soil moisture index
Issue Date: 23-Nov-2010
Publisher: TDMRC Unsyiah
Abstract: Climate change is causing persistent and prolonged drought in Mongolia, yet the impacts, especially on the nation’s agricultural sector, remains poorly documented. Awareness of drought conditions is particularly important at the local level because many rural populations derive their livelihood from climate-dependent pastoralism. It is important for the local government and people to take actions to plan agricultural production and to protect their crops. One of the crucial indicators in surface energy balances, runoff, potential drought and crop yield is soil moisture. Soil moisture can be used to model water-plant coupled land surface process and land-air coupled climatic systems and be used as indicative information to combat drought consequence in arid and semiarid areas. In this study, soil moisture values recorded during 2004-2009 in the Darkhan Aimag area were used. This area is characterized as a crop production area. A simple soil moisture index (SMI) was used to identify and describe the spatio-temporal variation of the soil moisture conditions at daily, 8-day, monthly and yearly timescales. Rainfall records and land use cover change within the same period were included in the analysis. Results found that about 50 percent of the SMI modeled by linear regression fitted well with the observed soil moisture, reflecting a good correlation. It was thus concluded that SMI derived from remote sensing data can be used to plan agricultural production and water management in the study area. It has great advantages when ground information is unavailable and inconsistent. The results can be used to facilitate the work of resource managers, government officials and local people for planning annual agriculture activities. Monitoring soil moisture conditions may assist them in beginning to develop strategies to deal with possible abrupt changes in their agriculture lifestyles and the future.
URI: http://hdl.handle.net/123456789/5346
ISSN: 2086-3195
Appears in Collections:AIWEST 2010 Proceedings

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