Soil Acidity pH Phyrit Concentration Elevation Map Climate Classification Map

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4.3.3 Soil Acidity pH

Degree of soil acidity represent one of element soil fertility and represent the constrictor influenced the absorbtion of hara element. Soil acidity in research area have pH between 3,9 – 4,8. Most of the area having pH less than 4.

4.3.4 Phyrit Concentration

Phyrit FeS2 concentration on potencial acid sulfat soil became a problem if they has oxydated because incorrect process on land management. Phyrit became depend on phyrit deepness, concentration, and commodity. Mineral substance having concentration FeS2 0,75 have earned referred as phyrit. Amount of phyrit in research location on mineral soil range from 0,24 - 1,45. Mineral soil with phyrit 0,81 - 1,45 having widest spreading and only a little one have phyrit concentration between 0,21 - 0,51. On the other hand, peatland high than 2 meter does not have concentration of phyrit.

4.3.5 Elevation Map

Elevation in research area are flat relatively with maximum elevation 50 m above sea level and minimum elevation 1 m above sea level. Based on the elevation data and type of landsystem in research area, slope condition are relatively flat with average slope less than two percent. In order to determine land suitability for paddy field in research area, these factor are not really influenced because in research area these factor is quite flat. For more detail about elevation condition in research area can be seen on Figure 11. 43 Figure 11. Elevation Map in Research Area

4.3.6 Climate Classification Map

In research area, climate classification based on Oldeman classification are classified into 5 climate type along with ratio between wet month and dry month from 19 rainfall station in research area. Based on result analysis using Oldeman criteria, we can obtain that climate type in research area are consist of five type. There are C2, C3, D1, D3 and E2. For more details, climate type classification based on Oldeman Classification are show on Table 6 and Figure 12. 44 Table 6 Agricultural Activities Description in Research Area Based on Oldeman Classification Climate Type Sub District Agricultural Activities C2 C3 C4 Kapuas Barat, Basarang, Pulau Petak, Pandih Batu, Kapuas Hilir dan Dusun Hilir Kapuas Barat, Kapuas Murung - - Paddy planting once, secondly crops not plant in dry season D1 Jenamas dan Kapuas Murung Short age paddy once, high production and palawija D2 D3 - Kahayan Hilir, Mantangai, Kahayan Kuala, Kapuas Kuala, Selat, Pandih Batu, Only possible once paddy and once palawija Climate Zone Wet Month Dry Month A1 9 2 A2 9 2 - 4 B1 7 - 9 2 B2 7 - 9 2 – 4 C1 5 - 6 2 C2 5 - 6 2 – 4 D1 3 - 4 2 D2 3 - 4 2 – 4 D3 3 - 4 5 – 6 E1 3 2 E2 3 2 – 4 E3 3 5 – 6 E4 3 6 45 Climate Type Sub District Agricultural Activities D4 Kapuas Hilir - E Mantangai, Dusun Hilir, Jenamas, Kahayan Hilir, Kapuas Barat, Kapuas Murung Too dry, only possible once palawija Source : Analysis Result, 2008 According to Oldeman Classification, the area which categorized as Climate Type C2, C3 and C4 are quite suitable for agricultural activities and it was possible for paddy planting once and crops. The area which have climate type of C2 and C3 are spread along Kapuas Barat, Basarang, Pulau Petak, Pandih Batu, Kapuas Hilir dan Dusun Hilir, Kapuas Barat, and Kapuas Murung District. Class of D1 in Climate type zone in research area are spread on Jenamas and Kapuas Murung district. It was possible for planting paddy once at short age and crops. While D3 climate type are spread on Kahayan Hilir, Mantangai, Kahayan Kuala, Kapuas Kuala, Selat, Pandih Batu, Kapuas Hilir District. In terms of agriculture, this kind of climate type is less suitable for development as paddy field, but with some management in soil treatment, it is still possible to grow paddy field and crops once a year. For more details, land suitability based on Oldeman Classification in research area are show on Table 7 Table 7. Land Suitability Based on Climate Classification on Several Rainfall Station in Research Area No Rainfall Station Wet Month Dry Month Climate Type Suitability Class 1 Pulang Pisau 3 E2 N2 2 Sei Tatas 6 3 C3 S3 3 Tamiang Layang 5 3 C2 S3 4 Selat 5 2 C2 S3 46 No Rainfall Station Wet Month Dry Month Climate Type Suitability Class 5 Basarang 6 3 C2 S3 6 Tangkiling 3 3 D3 N1 7 Anjir Sarapat 3 3 D3 N1 8 Tamban Catur 2 2 E2 N2 9 Palingkau 4 1 D1 N1 Source : Analysis Result, 2008 Figure 12. Rainfall Map in Research Area 47

4.3.7 Peat depth Map