Global Patterns of Green Up and Green Down

2021-05-18 11:06:42
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(2 pts) What is land cover #1 (solid triangles)? What evidence did you use to come to this conclusion?

Land cover #1, which is the solid triangles illustrates that the Normalized Difference Vegetation Index begins at about a value of 0.24 in the month of January and slightly rises to 0.25 in February. From there it steadily rises to a value of 0.46 in June and gradually attains its maximum valuation of 0.50 in mid-September-October. Thereafter, it begins to fall steadily up to 0.28 in December. This means that the plants growth begins in January and rises up to mid-September and October and thereafter begin to assume a downward spiral up to the month of December. The land cover here could be at of South African wooded grasslands due to the sharp rise in vegetation vigor owing to increase in sunlight intensity from January up to October before sharp decrease through to December. Moreover, the region falls within the Tropic of Capricorn that has similar monthly rainfall patterns.

(2 pts) What is land cover #2 (open squares)? What evidence did you use to come to this conclusion?

The land cover #2 (the open squares) must be that of tropical latitude ecology that is dominated by broad leaf evergreen trees. This is because it is characterized by high vegetation vigor implying that plants in this region are making use of the majority of the available sunlight. Further evidence points to the fact that majority of this land cover lies within the equator, a region boasting of sufficient sunlight.

(2 pts) What is land cover #3 (open circles)? What evidence did you use to come to this conclusion?

The land cover # 3 (open circles) must be the Arctic Tundra. This is characterized by high altitude treeless plains in harsh climates of low rainfall and low average temperatures. There is very little sunlight experienced in this region throughout the year. As a result, no plant growth can be supported hence the low vegetation vigor recorded in the entire year. There is no month where the vegetation vigor exceeds 0.08.

(2 pts) What is land cover #4 (open triangles)? What evidence did you use to come to this conclusion?

The land cover # 3 (open triangles) must be that of mixed coniferous and deciduous trees, mostly found in Europe and North America. The vegetation vigor varies from a valuation of 0.44 in January through to March where it sharply drops to a value of 0.20 in August before steadily rising to 0.44 value. This sharp drop in vegetation vigor is attributed to the seasonal shedding of leaves of the mixed coniferous and deciduous trees.

5. (2 pts) What is land cover #5 (solid circles)? What evidence did you use to come to this conclusion?

The land cover # 5 (solid) must be that of a desert that is characterized by limited ecology due to extremely low annual precipitation as well as low and sparse vegetation. This is because of its low vegetation vigor. Short seasonal rains that occur between the months of May and July sometimes cause a rise in vegetation vigor to slightly over 0.30 valuation. It must fall within the tropic of Cancer where the worlds largest desert, Sahara Desert is found or within the Tropic of Capricorn from where Kalahari Desert is located. It is mainly shrubs, desert and bare ground in this land cover.

Work cited

Jarrett, Alex . "Degree Confluence Project." 2008. Confluence.org. Website. 16 Jul. 2016.

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