Soil Analysis

Presented by:

SKHLKMSS Geography Task Force

Comparison between the soil samples Sample A : woodland

Sample B : slope

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

Locational advantages of the site

Environment

Society

Economy

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

Alternative use of the land

Suggestion: 假日農莊 Reasons: Recreational use

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

Benefits to society

Educate our next generation

Raise public awareness

Benefits to economy

Increase economical efficiency

Increase output

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.