19th World Congress of Soil Science Symposium 1.2.2 Soil Geography and Ecology
Soil Analysis Presented by:. SKHLKMSS Geography Task Force.
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Transcript of Soil Analysis Presented by:. SKHLKMSS Geography Task Force.
Sample A (woodland)
Sample B (slope)
Horizon O A O A
Depth(cm) 0-14.5 14.5-21 0-2.2 2.2-16.2
Colour Dark brown Light Brown
Brown Light brown
pH 6 - 6 -
Soil nutrients(ppm)
2.8(ammonia)>100(Phoshate)
- >20 (am)
>100(pho)
-
Average Infil. Rate(cm/30s)
1.0625 0.563
Soil Water Content %
9.56 13.52 28.1 9.53
Soil Organic Matter%
2.48 2.62 0.148 0.613
Sample A (woodland)
Sample B (slope)
Sand % 88.51 65
Silt % 10 25
Clay % 1.49 10
Average Temp At Different Depths (C)
Ground Surface
27.06 32.32
10cm 26.08 27.72
20cm 29.18 33.33
If the land is used for farming…
Suggestion one: aloe
Reason: They can be grown in sandy soil.
There is a demand for aloe in Hong Kong.
Suggestion two: Tea Reasons: Tea can be grown in hill slope
Profitable
Appropriate Eco-farming techniques
Crop Rotation
Organic Farming( natural fertilizer, no pesticides)
Diversification
How do they benefit the ecosystem?
Maintain nutrient cycle
Larger the biodiversity
Increase the stability
Disadvantages
Higher costuse of non renewable resources for replenishmentcost of new irrigation system. Exotic speciesNew species may not be able to adopt the
environment.May dominant the ecosystem.Food chain affected.