Forms CB

National Crown Condition Survey

Convention on Long-Range Transboundary Air Pollution (CLRTAP)
International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests)
Annual report on health status of main tree species on the basis of defoliation

National Crown Condition Survey (* required fields)

Country (region)*

Institution (National Focal Centre)*

Staff Name*

Total land area (1000 ha)

Total forest area (1000 ha)*

Grid size*

Survey Period from*

Survey Period to*

Total number of plots investigated in this reporting period*

Percentage of trees defoliated
		Total Conifers	Total Broadleaves	Total All
No. of sample trees:
Defoliation class	Defoliation percentage	%	%	%
0 Not defoliated	0 - 10%
1 Slightly defoliated	>10 - 25%
2 Moderately defoliated	>25 - 60%
3 Severely defoliated	>60 - <100%
4 Dead	100%
Total

Please examine your entries carefully before hitting the send button.

Part 4 of 4

All trees (Form C1)

No. of sample plots: No. of sample trees:

% Trees defoliated:

Not defoliated (class 0): Slightly defoliated (class 1): Moderately defoliated (class 2): Severely defoliated (class 3): Dead defoliated (class 4):
Class 2 to 4 moderately to dead: Class 1 to 4 slightliy to dead:

Please examine your entries carefully before hitting the send button.

National Crown Condition Survey

Percentage of trees defoliated

All trees (Form C1)

% Trees defoliated: