ar18 18 the norwegian response to ”lucas” strand, geir-harald director / prof. dr. scient...
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AR1818The Norwegian response to ”LUCAS”
Strand, Geir-HaraldDirector / Prof. Dr. ScientNorwegian forest and landscape instituteRaveien 9POBox 115, 1431 Ås, NorwayTel : ++47 / 64 94 96 99 Fax : ++47 / 64 94 80 01 E-mail : [email protected]
Land resource accountingSituation:• No uniform land resource statistics
Needs:• Documentation of land cover and land use• Account for changes• Develop (political) goals• Audit management and development
HistoryProposed in 1977SSB attempt in 1981Dead throughout the 1990’ies
2003 SSB & NIJOS initiativeSupported by Ministry of Agriculture and FoodLand resources – not agricultureSystem based on LUCAS v1
Sampling unit
PSU is 600 1500 meters (0,9 km2)10 SSU placed within the PSU
Sampling unit
A sampling unit at a random location(Defined in UTM-33 – drawn in UTM-32)
Sampling frame
Area frame survey on an 1818 km grid0,9 km2 primary sampling unitsEach representing 324 km2 (Factor 360)
National coverage
Approximately 1080 PSUsNorway
Telemark county
A cluster sample with n=1 from N=360
Preparations
Using existing mapsscale 1:5,000
Adding field data forremaining areas (including editing)
Field survey
Registration directly on aerial photographsCarried out in the fieldClassification system(s)
Field surveyRegistration formsbased on LUCAS v1 with national additions
Measurements and counts Registrert areal på feltflate 2028
Mosesnøleie 53,3 daGrassnøleie 139,2 daFrostmark, letype 106,3 daLavhei 281,5 daRishei 128,7 daGrasmyr 186,6 daVann 3,2 daTotalt 898,8 da
Regional summary
Regional summary
302520151050
Areal (%)
100
80
60
40
20
0
Fre
kve
ns
(%)
9d
9c
9a
8c
8b
7c
7b
7a
6c
6b
6a
5b
4e
4c
4b
4a
12h
12e
12d
12c 12b
11b
11a
DescriptionsAreal (km² og %) Forekomst
623,2 5,3 24 flater (69%)
Example: Swamp forest
Biodiversity
Pasture
31
24
35
10
0
5
10
15
20
25
30
35
40
Ikke beite Mindregodt beite
Godt beite Svært godtbeite
Test period 2004-05Cost: EUR 750 per sampling unit
(average. Highly variable) Northern Norway – EUR 1200 expected
Time: Two units/day in central areas with road Bicycle is useful on logging roads Worst case so far: 9 hours trekking
Coverage 2004-05209 sampling units (almost 20%)2006: Another 80 – 100 unitsOne test reportData for four more reportsStarted trials with cultural sitesStarted trials with soil mapping