Δασικά Παρατηρητήρια
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Transcript of Δασικά Παρατηρητήρια
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1.1 .
1.2 - ..
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2.1 ..
2.2 (visibility analysis)
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3.1 :
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2.2 (Visibility Analysis)
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DEM, .
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ArcGIS
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) ( DEM).
CLIP () ArcToolBOX>Analysis Tools>
Extract DHMOS .
: Road_clip, Hydro_clip, LandCover_clip.
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DEM
:
Spatial analystoption Generalanalyst maskDHMOS
extentanalysis extentsame as DHMOS
Cell size analysis cell sizesame as Dem
Cell size30
Raster calculator Spatial analyst
DEM
Dem_DHMOS ( 1).
Raster calculator[dem] evaluate
3.1 :
. :
< 10
< 200
< 400
( 10, 11
)
distance, slope, reclassify, convert feature to raster
raster calculator spatial Analyst
5, 4, 3, 2, 1 .
3
(spatial
analystsurfacevisibility analysis).
ArcMap dem_dhmos, roads,hydro,landcover,
.
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1 : `` .``
( 1)
.
Dem_DHMOSpropertiessourcestatisticsMean
463m.
:
Spatial Analystraster calculator [dem_dhmos] > 463 Evaluate
Cr_dem ( 2).
0 ,
463m.
1 463m
.
1: . 2:
.
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10
2 : `` < 10``
(Dem)
( 3) : Spatial Analystsurface analysisslopeinput
rasterdem_dhmos.
100 :
Spatial analystraster calculator [slope of dem_dhmos] < 10 Evaluate
Cr_slope ( 4).
0 ,
100. 1
100
.
3: . 4:
100.
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11
3 : `` < 200m.``
(Hydro_clip)
( 5) : Spatial Analyst Distance Straight
linedistance to hydro_clip.
`` < 200m`` :
Spatial analystraster calculator [distance to Hydro] < 200 Evaluate
Cr_Hydro ( 6).
0 ,
200m.
1
200m.
.
5: . . 6: .
200m.
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12
4 : `` < 400m.``
(Roads_clip)
( 7)
: Spatial Analyst Distance Straight linedistance to
Roads_clip.
`` < 400m`` :
Spatial analystraster calculator [distance to Roads] < 400 Evaluate
Cr_Roads ( 8).
0 ,
400m.
1
400m.
.
7: . . 8:
400m.
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5 : `` ( 10, 11
).``
(LandCover)
(LandCover attribute table class)
(class 10,11)
: (attribute table) LandCover,
class, 10 & 11 (
) (add Field) Code ,
1. 0.
LandCover
Code. Vector
Raster .
:
Spatial analyst convert Features to raster
Cr_LandCover ( 9).
0 ,
. 1
.
9:
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14
5 .
5 ,
5,4,3,2,1 .
:
Spatial analyst raster calculator
[Cr_dem]+[Cr_slope]+[Cr_hydro]+[Cr_roads]+[Cr_landcover] Evaluate
Total_Map ( 10).
. .
10:
.
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(visibility analysis).
( 10)
(3)
5 .
(3)
.
( 11) (3)
.
( ).
11: (3) .
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(3)
. :
Spatial analyst surface analysis viewshed input surface dem
observer points 3points_total
input surface dem
(dem_dhmos)
.
viewshed of scenario 1 ( 12) (3) .
12: (3) .
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. (
13) .
:
Spatial analystraster calculator[Cr_landcover]=1&[viewshed of scenario 1]>0
Forest_visible_total map.
.
13: 3 .
(attribute table) ,
(3) 6516.
14.863.
, 43,84%
.
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3.2 :
.
.
, . ()
.
(Raster 400m)
(Point
shapefile).
(
) 400 m. :
landcover raster 400m
Spatial analystoption Generalanalyst maskDHMOS
extentanalysis extentsame as DHMOS
Cell size 400
Spatial analystraster calculator [Cr_landcover] Evaluate
landcover400 point shapefile
Spatial analystconvertraster to featuresinput rasterlandcover400
fieldvalue
output typePoint
( 14) .
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14: 400m.
, (viewshed)
.
( Value) (
) .
input surface dem
(dem_dhmos)
. viewshed of scenario 2
( 15).
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15: .
15, ,
(3) . (3)
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(116) 242
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( 16).
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16: (3)
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17) .
:
Spatial analystraster calculator[Cr_landcover]=1&[viewshed of scenario 2]>0
Forest_visible_total map.
.
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17: 3 .
(attribute table) ,
(3) 8046.
14.863.
, 54,13%
.
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4: .
, 2 (
&
) 2 (3)
.
(3)
43,84% 54,13%, .
2
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1
2
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