Development of method for estimating the components of upland soil productivities with accuracy and minuteness using Landsat TM data and improvement of upland soil management based on its information
2002
Hatanaka, T. (National Agricultural Research Center for Hokkaido Region, Sapporo (Japan))
Three subjects such as gHigh quality of productsh, gHigh production at low cost gandh Promotion of sustainable agriculture as well as preserve the environmenth are exist in upland farming of Tokachi district located east-part of Hokkaido in the northern Japan. It is important to take countermeasures such as improvement project of the land basis, soil fertility management and fertilizing technology, crop rotation plan basd on the productivity of upland soil to cope with upper subjects. For that purpose,in the first place, it is needs to estimate the irregular conditions of soil productivity as it is per unit field accurately and swiftly. Then it is also needs to estimate the soil productivity generally by overlaying the components and to establish the soil management techniques based on its result. The present research have three aims as follows G 1To develope the method for seizing the soil productivity components such as soil organic matter (OM)content,soil moisture chracteristics (SMC for example available moisture holding capacity etc), and gravelly layer's depth (GLD) over wide area and swifty using Landsat Thematic Mapper (TM) observational data. 2 To develope the gAgricultural Information System of Tokachih which is capable to give the high degree's information gained by overlaying the few primary data such as OM, SMC and GLD for soil management. 3 To indicate a new support concerning to soil management on upland farming on both level of fermar's unit field and wide area.
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