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STS Mod 2 - Macagubang

The document discusses several topics related to tropical forests and forest ecosystems in the Philippines: 1) Tropical forests provide many important natural resources including foods like coffee, tea, cocoa, citrus fruits, and spices. 2) Forest cover in Davao Oriental province increased slightly from 2000-2020 but one area lost over 20 square kilometers of trees. 3) Invasive species like the Hagonoy plant and water hyacinth negatively impact native species by spreading quickly and reducing habitat. Tilapia fish also displaced other native fish after being introduced. 4) Forest area in the Philippines has declined significantly since 1960 due to factors like development and inaccurate classification of some areas as forest. 5

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Marshall james G. Ramirez
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94 views2 pages

STS Mod 2 - Macagubang

The document discusses several topics related to tropical forests and forest ecosystems in the Philippines: 1) Tropical forests provide many important natural resources including foods like coffee, tea, cocoa, citrus fruits, and spices. 2) Forest cover in Davao Oriental province increased slightly from 2000-2020 but one area lost over 20 square kilometers of trees. 3) Invasive species like the Hagonoy plant and water hyacinth negatively impact native species by spreading quickly and reducing habitat. Tilapia fish also displaced other native fish after being introduced. 4) Forest area in the Philippines has declined significantly since 1960 due to factors like development and inaccurate classification of some areas as forest. 5

Uploaded by

Marshall james G. Ramirez
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Aviles R.

Macagubang
BITM – A

Analysis
1. List down and discuss the natural resources obtain from the tropical forest.
• Other rainforest staples include citrus, cassava, and avocado, as well as cashews, Brazil
nuts, and common spices like vanilla and sugar. Then there are a few foods that many of
us consider life-giving: coffee, tea, and cocoa, all of which originate in tropical forests.
Application
A. Describe the forest change in Davao Oriental? (Please indicate your sources)
• Baganga had the greatest loss of tree cover, at 20.4km2, compared to an
average of 4.68km2. From 2000 to 2020, Davao Oriental gained 2.60km2 of tree
cover, accounting for 1.5% of total tree cover gain in the Philippines. In the year
2000, trees covered 88% of Davao Oriental
B. Give 3 examples of invasive species found in the country and describe how they affect endemic
species.

 The plant, which is now a common weed in the Philippines, was introduced in the
southern Philippines in the 1960s. It also spreads quickly in agricultural land, reducing
the space available for edible plants consumed by livestock. Hagonoy is poisonous to
livestock due to its allelopathic properties.

 Water hyacinth (Water lily), which is expected to cover the Pasig River and have an
impact on Laguna de Bay during the rainy season. It outcompetes native plant species
and covers a large area of the surface, causing low oxygen levels in the water. The
plants, on the other hand, are well-known for their role in removing heavy metals from
the Pasig River's polluted waters.

 Tilapia was introduced to the Philippines in the 1970s. Despite becoming a staple of the
Filipino diet, the fish is said to have displaced other edible native fishes. Wild Tilapia
have been discovered in Lake Sebu, Agusan Marsh, and Liguasan Marsh.
C. Discuss the importance of natural fire.

 The use of fire is to keep us warm when it's cold, to help us cook our own food, and to
provide light when it's dark.
D. Describe the forest ecosystem change of the Philippines?

 The forest area in the Philippines is estimated to have shrunk from 12 million hectares in
1960 to around 5.7 million hectares today (which includes less than 1 million hectares of
virgin forest largely confined to very steep and inaccessible areas). Accurate land use
data is difficult to obtain because all areas with a slope of more than 18 degrees are
classified as forest, regardless of whether any tree cover exists. Officially, forest area
accounts for approximately 33% of total land area. As previously stated, other data does
not support this.
E. Describe the concrete actions of the Philippine government to protect our remaining forest?

 The fundamental policy principles are outlined in Section 2. Section 3 contains


definitions. For the purpose of implementing the provisions of this Code, the Bureau of
Forestry, the Reforestation Administration, the Southern Cebu Reforestation
Development Project, and the Parks and Wildlife Office are merged into a single agency
to be known as the Bureau of Forest Development (sect. 4). All forest land, grazing lands,
and forest reservations currently administered by other government agencies, including
watershed reservations, will be subject to the Bureau's jurisdiction and authority. The
Secretary of Natural Resources, also known as the Department Head, will have direct
control and supervision over the Bureau (sect. 7).

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