Background
After the victory of Islamic revolution,with regard to scientific review of executies and bringing the natural resources plans under control,it manifestes to have natural resources map,providing statistics,main information and data bank.
So it becomes nesseary to provide a natural resources map by FAO but due to high expences our experts deuded to provide it under the control .So we decide to provide the natural resources map of Isfahan in a decentralized way and using the experts of natural resources.
Groupwork
In order to provide and perform the project of natural resources map 2 experts were introduced to the technical-engineering office to learn necessary thing.(Mir mohamad sadeghi and nadi).sometimes because of the variety of items other experts helped.
Time of executing the project
The manager of the organization confirmed the project of providing natural resources Map in 1999. The directions and pictures were delivered to technical-engineering Office in 1999 and the work began practically from the summer of 1999. They specified that the time of executing the project is2 years but it changed to 3 years. The map was completed in 3 years and then it was sent to technical- engineering for Priniting.
The method of executing the project
In order to provide natural resources map we needed training,facilities such as map,satellites pictures,suitable working place,transportation for field check …..Also the provinces map should agree to each other in order to provide the complete map of the country .
So the below cases were executed in 3 stages:
- The first stage:
- The topographical maps of 1:250000 and 1:50000 and the index of this maps were provided,then we marked the boundaries namerically to provide the map within the framwork of the index of the organization,s.
- Roads are one of the important factors that make the map clear.So we provided the map of main Roads,by-roads and railways numerically .
- Other main maps such as flood-ways,topography with a distance of 500 m.Topography and residential areas were provided to clear the map which printing it.
- Field operations stage.
- The pictures of Landsat 5 satellite having TM measuring on a scale of 1:100000 in a segmented manner and a quarter frame.
- Specifications of the pictures are presented in figure below.
- At first the pictures were delivered with the combination of 742 bands,but we changed it to 432 because that combination specify the vegetation,geology and also there is no way to divide the resources such as renglands,forest and rocks on heights.
- After taking the picture they were covered by a transparent mica and all the information,specifications and co-coordinate networks were written on it.Then they were drawn by using existing maps and their boundaries were marked.
- Using explanation and interpretation(table below),the feature of related areas were explained&interpreted,then the boundaries specified and drawn on a tracing-paper.
Vegetation map layer and items in PAT table
| Vegetation layer and land use |
Class |
Lc_Code |
Symbol |
| Urban |
1 |
URB |
18 |
| Condensed Forest |
2 |
F1 |
11 |
| Semi Condensed Forest |
3 |
F2 |
48 |
| Thin Forest |
4 |
F3 |
18 |
| Shrub land |
5 |
SH |
78 |
| Planted forest |
6 |
PF |
3 |
| Condensed Rengland |
7 |
R1 |
13 |
| Semi Condensed rengland |
8 |
R2 |
28 |
| Thin Rengland |
9 |
R3 |
88 |
| Irrigation farm and garden |
10 |
IF |
5 |
| Dry farm |
11 |
DF |
20 |
| Kavir and Desert |
12 |
K |
15 |
| Sand dune |
13 |
SHR |
37 |
| Sand Area |
14 |
SS |
6 |
| Salt land and Salinity |
16 |
SL |
82 |
| Daghe |
15 |
TK |
7 |
| Swamp |
17 |
SW |
67 |
| Bare Land and without cover |
18 |
BL |
61 |
| Water area(Lakes and pond) |
19 |
L |
4 |
| The forth of the river |
20 |
RB |
2 |