Page 37 - Final Report Improving information and developing a repository of sustainable soil management practices in Asia

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5. Environment

The mentioned area has the annual mean rainfall in a period of 30 years accounting for
1,543.20 millimeters. The topographic area is flood plain with gentry slope (< 1 %). The elevation

is 50-60 centimeters higher than the mean sea level. The soil is Samutprakarn soil series (Sm), soil
series group 3. The parent material of soil is derived from marine sediments mixing with alluvial

sediments. The soil depth is medium level. The top soil is clay texture. The subsoil is greenish

gray clay. Soil reaction is moderately acidic to moderately alkaline (pH 6.6-8.0). The limitation
factor of land-use is saline soil and be flooded by sea water. Farmers are normally used for fish

farming, shrimps or left deserted. Ground water cannot be utilized. Water for farming is enough.
Regarding the water quality (not treated yet), the water can be used for agriculture only.

5.1 Impact in the on-site from using the technology

1. Economic and social impact

Aspect Impact Before After

1. Biodiversity Very The area was used Planting trees in the

positive for planting fruit. ecosystem of brackish-water
Small quantities of forests and aquatic animal

yields were culture have brought about a

obtained, which variety of plant varieties and
did not cover the animal species.

expense.

2. Area for Positive Very little When the community is

production transferred with knowledge
and public-benefit activities

are organized, expansion of
reforestation areas increases

more.

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