RESULTS FROM THE 2001 PROGRAM




	Conabio ť Hot spots ť Results from the 2001 program

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The program was carried out with AVHRR daytime and nighttime satellite images (the exact time the image was taken is shown in the tabular information).

General Map

The general map shows all hot spots detected with nighttime AVHRR images for the period January 1 to August 31, 2001. This map is the result of superimposing maps corresponding to each of the days on which hot spots were recorded. Dates not found on the map correspond to days on which no hot spots were detected or no image was received.

Images Analyzed

The following tables show the information referring to the number of days without image, to the number of days with information from at least one hot spot, and the total number without detection.

NIGHTTIME AVHRR IMAGES

	Jan.	Feb.	March	April	May	June	July	Aug.
No image	0	0	1	0	0	1	2	1
Days with hot spots detected	15	25	27	30	30	24	18	14
Days without hot spots detected	16	3	3	0	1	5	11	16

DAYTIME AVHRR IMAGES

	Jan.	Feb.	March	April	May	June	July
No image	0	0	2	1	2	3	29
Days with hot spots detected	31	27	29	29	28	27	2
Days without hot spots detected	0	1	0	0	1	0	0

Total Images Processed

Nighttime	238
Daytime	175
Total	413

Nighttime AVHRR Images

Number of days
1	93.3%
2	5.9%
3	0.5%
4 and more than 4	0.3%

Daytime AVHRR Images

Number of days
1	89.7%
2	9.3%
3	0.9%
4 and more than 4	0.1%

Natural Vegetation Most Affected

Some 41.2% of the hot spots were recorded in areas with preserved natural vegetation (that is, those categories of vegetation not presenting fragmentation or disturbance according to the National Institute of Statistics, Geography and Informatics classification of 1996, preliminary version). Of the hot spots detected with daytime images, 29.2% were located in this same category. The distribution by group of vegetation is presented below:

Nighttime AVHRR Images

Vegetation
Forests	76.6%
Tropical forest	11.0%
Scrubland	4.0%
Natural pastureland	2.5%
Other types of vegetation	5.9%

Daytime AVHRR Images

Vegetation
Forests	56.1%
Tropical forest	26.1%
Scrubland	5.6%
Natural pastureland	1.4%
Other types of vegetation	10.8%

The five types of vegetation most affected by the presence of hot spots are shown in the following table:

Type of vegetation	Nighttime presence	Daytime Presence
Pine-oak forest	31.9%	17.6%
Oak forest	20.8%	22.3%
Pine forest	11.1%	6.6%
Oak-pine forest	10.6%	8.2%
Low tropical drought deciduous forest	6.0%	14.7%