4.2 Reliability of the suitability maps
The mismatches between the obtained map and field –based identification were 14, 30 and 33% for
rice, sugar-cane and cassava respectively. The mismatches are likely due to intensive land management
and high level inputs made by individual farmers .Of the 60 locational samples the agreement between
the LDD maps and the established maps for the rubber tree was 48 locational samples for the
combination of high and moderate classes.
4.3 Agricultural land use plan
The agricultural land use plan, based on the combination of crops, is shown in Fig. 4. The areas
occupied by each unit are illustrated in Table 3.
This study provides information about the areas suitable for crops, not only individual crop
types but also crop combinations. This provides opportunities for analyzing alternatives in agricultural
land uses in order to lower marketing risks. Land suitable for rice was found extensively in the
floodplains of the watershed. The legal reserve areas are restricted to the mountainous areas with steep
slopes that are normally covered with dipterocarp and evergreen forests. The land use plan as identified
in this study can be applied at the large watershed scale. At this scale we need a broad planning strategy,
policies, priorities and operational planning to effectively implement a land use plan.
The integration of development needs and conservation is then needed. For these goals we still
need the economical and social analysis, as well as public and executive-level discussions and
the plan formulations to fulfill the planning. However, the spatial information provided in GIS offers the
decision maker with reasonable suitability maps.
It should be observed that variations seen in the results of this study are apparently due to the
values of each land quality unit assigned, particularly the soil and water availability classes. This will
require further empirical research to improve the derivation of these values.
Highly suitable
Moderately suitable
Marginally suitable
Unsuitable
Community
Water body
Land Suitability for rice, sugar-cane, cassava and rubber tree
(a) (b)
(c) (d)Fig4. Agricultural Landuse Plan
Table 3 Agricultural land use, The Chi watershed, Northeast Thailand.
5. CONCLUSIONS
In conclusion, the GIS-based land
evaluation approach can provide
thematic layers that enable the
formulation of dynamic scenarios for
integrating information. The integration
process with geographic references is
widely accepted for implementing spatial
decision support systems. In terms of
land management, the watershed is the
area best suited for natural resource
management and allocation of land uses
for land sustainable development. The
maps and their associated statistic
provided the areas best suited to crop
combination. We can formulate the plan
by selecting crops with high economic
return for the land unit of particular
year. With GIS-based land evaluation,
it is also possible to revise land use
plans, as needed, in the future. It is
suggested that particular land unit
should be further analysed with
empirical research.
Suitability Area
Sq. Km. %
Highly suitable for rice (irrigation area) 2721.60 5.64
Highly suitable for rice (rainfed area) 872.41 1.81
Highly suitable for sugar cane 1052.49 2.18
Highly suitable for cassava 6009.44 12.45
Highly suitable for rubber-tree 780.76 1.62
Highly suitable for sugar cane and rubber tree 37.49 0.08
Highly suitable for cassava and rubber tree 4.21 0.01
Highly suitable for cassava and sugar cane 2139.42 4.43
Highly suitable for cassava, sugar cane and
rubber tree 854.42 1.77
Total of highly suitable area 14472.24 29.99
Suitable for rice 3215.04 6.66
Suitable for sugar cane 40.26 0.08
Suitable for cassava 1681.12 3.48
Suitable for rubber tree 87.10 0.18
Suitable for sugar cane and rubber tree 7.36 0.02
Suitable for cassava and sugar cane 2655.07 5.50
Suitable for cassava and rubber tree 207.01 0.43
Suitable for cassava, sugar cane and rubber tree 2921.13 6.05
Total of suitable area 10814.09 22.4
Total of highly suitable and suitable area 25286.33 52.39
Unsuitable 20327.54 42.11
Community 1466.12 3.04
Water body 1189.18 2.46
Total of non-agriculture 2655.30 5.50
Total 49,477.00 100.00
Highly suitable for rice (irrigation area)
Highly suitable for rice (rainfed area)
Highly suitable for sugar cane
Highly suitable for cassava
Highly suitable for rubber-tree
Highly suitable for sugar cane and rubber tree
Highly suitable for cassava and rubber tree
Highly suitable for cassava and sugar cane
Highly suitable for cassava, sugar cane and rubber
tree
Suitable for rice
Suitable for sugar cane
Suitable for cassava
Suitable for rubber tree
Suitable for sugar cane and rubber tree
Suitable for cassava and sugar cane
Suitable for cassava and rubber tree
Suitable for cassava and sugar cane and rubber
Unsuitable
Community
Water body
Chi boundary
Agricultural La
4.2 Reliability of the suitability maps
The mismatches between the obtained map and field –based identification were 14, 30 and 33% for
rice, sugar-cane and cassava respectively. The mismatches are likely due to intensive land management
and high level inputs made by individual farmers .Of the 60 locational samples the agreement between
the LDD maps and the established maps for the rubber tree was 48 locational samples for the
combination of high and moderate classes.
4.3 Agricultural land use plan
The agricultural land use plan, based on the combination of crops, is shown in Fig. 4. The areas
occupied by each unit are illustrated in Table 3.
This study provides information about the areas suitable for crops, not only individual crop
types but also crop combinations. This provides opportunities for analyzing alternatives in agricultural
land uses in order to lower marketing risks. Land suitable for rice was found extensively in the
floodplains of the watershed. The legal reserve areas are restricted to the mountainous areas with steep
slopes that are normally covered with dipterocarp and evergreen forests. The land use plan as identified
in this study can be applied at the large watershed scale. At this scale we need a broad planning strategy,
policies, priorities and operational planning to effectively implement a land use plan.
The integration of development needs and conservation is then needed. For these goals we still
need the economical and social analysis, as well as public and executive-level discussions and
the plan formulations to fulfill the planning. However, the spatial information provided in GIS offers the
decision maker with reasonable suitability maps.
It should be observed that variations seen in the results of this study are apparently due to the
values of each land quality unit assigned, particularly the soil and water availability classes. This will
require further empirical research to improve the derivation of these values.
Highly suitable
Moderately suitable
Marginally suitable
Unsuitable
Community
Water body
Land Suitability for rice, sugar-cane, cassava and rubber tree
(a) (b)
(c) (d)Fig4. Agricultural Landuse Plan
Table 3 Agricultural land use, The Chi watershed, Northeast Thailand.
5. CONCLUSIONS
In conclusion, the GIS-based land
evaluation approach can provide
thematic layers that enable the
formulation of dynamic scenarios for
integrating information. The integration
process with geographic references is
widely accepted for implementing spatial
decision support systems. In terms of
land management, the watershed is the
area best suited for natural resource
management and allocation of land uses
for land sustainable development. The
maps and their associated statistic
provided the areas best suited to crop
combination. We can formulate the plan
by selecting crops with high economic
return for the land unit of particular
year. With GIS-based land evaluation,
it is also possible to revise land use
plans, as needed, in the future. It is
suggested that particular land unit
should be further analysed with
empirical research.
Suitability Area
Sq. Km. %
Highly suitable for rice (irrigation area) 2721.60 5.64
Highly suitable for rice (rainfed area) 872.41 1.81
Highly suitable for sugar cane 1052.49 2.18
Highly suitable for cassava 6009.44 12.45
Highly suitable for rubber-tree 780.76 1.62
Highly suitable for sugar cane and rubber tree 37.49 0.08
Highly suitable for cassava and rubber tree 4.21 0.01
Highly suitable for cassava and sugar cane 2139.42 4.43
Highly suitable for cassava, sugar cane and
rubber tree 854.42 1.77
Total of highly suitable area 14472.24 29.99
Suitable for rice 3215.04 6.66
Suitable for sugar cane 40.26 0.08
Suitable for cassava 1681.12 3.48
Suitable for rubber tree 87.10 0.18
Suitable for sugar cane and rubber tree 7.36 0.02
Suitable for cassava and sugar cane 2655.07 5.50
Suitable for cassava and rubber tree 207.01 0.43
Suitable for cassava, sugar cane and rubber tree 2921.13 6.05
Total of suitable area 10814.09 22.4
Total of highly suitable and suitable area 25286.33 52.39
Unsuitable 20327.54 42.11
Community 1466.12 3.04
Water body 1189.18 2.46
Total of non-agriculture 2655.30 5.50
Total 49,477.00 100.00
Highly suitable for rice (irrigation area)
Highly suitable for rice (rainfed area)
Highly suitable for sugar cane
Highly suitable for cassava
Highly suitable for rubber-tree
Highly suitable for sugar cane and rubber tree
Highly suitable for cassava and rubber tree
Highly suitable for cassava and sugar cane
Highly suitable for cassava, sugar cane and rubber
tree
Suitable for rice
Suitable for sugar cane
Suitable for cassava
Suitable for rubber tree
Suitable for sugar cane and rubber tree
Suitable for cassava and sugar cane
Suitable for cassava and rubber tree
Suitable for cassava and sugar cane and rubber
Unsuitable
Community
Water body
Chi boundary
Agricultural La
การแปล กรุณารอสักครู่..
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4.2 Reliability of the suitability maps
The mismatches between the obtained map and field –based identification were 14, 30 and 33% for
rice, sugar-cane and cassava respectively. The mismatches are likely due to intensive land management
and high level inputs made by individual farmers .Of the 60 locational samples the agreement between
the LDD maps and the established maps for the rubber tree was 48 locational samples for the
combination of high and moderate classes.
4.3 Agricultural land use plan
The agricultural land use plan, based on the combination of crops, is shown in Fig. 4. The areas
occupied by each unit are illustrated in Table 3.
This study provides information about the areas suitable for crops, not only individual crop
types but also crop combinations. This provides opportunities for analyzing alternatives in agricultural
land uses in order to lower marketing risks. Land suitable for rice was found extensively in the
floodplains of the watershed. The legal reserve areas are restricted to the mountainous areas with steep
slopes that are normally covered with dipterocarp and evergreen forests. The land use plan as identified
in this study can be applied at the large watershed scale. At this scale we need a broad planning strategy,
policies, priorities and operational planning to effectively implement a land use plan.
The integration of development needs and conservation is then needed. For these goals we still
ต้องการการวิเคราะห์ทางเศรษฐกิจและสังคม ตลอดจนภาครัฐ และระดับผู้บริหาร การอภิปรายและ
แผนสูตรเพื่อตอบสนองแผน อย่างไรก็ตาม ข้อมูลในระบบสารสนเทศภูมิศาสตร์พื้นที่เสนอ
ผู้ตัดสินใจกับแผนที่ความเหมาะสมที่เหมาะสม มันควรจะสังเกตว่ารูปแบบ
เห็นในผลลัพธ์ของการศึกษานี้เป็น apparently เนื่องจาก
ค่าคุณภาพแต่ละหน่วยที่ดินได้รับมอบหมาย particularly the soil and water availability classes. This will
require further empirical research to improve the derivation of these values.
Highly suitable
Moderately suitable
Marginally suitable
Unsuitable
Community
Water body
Land Suitability for rice, sugar-cane, cassava and rubber tree
(a) (b)
(c) (d)Fig4. Agricultural Landuse Plan
Table 3 Agricultural land use, The Chi watershed, Northeast Thailand.
5. CONCLUSIONS
In conclusion, the GIS-based land
evaluation approach can provide
thematic layers that enable the
formulation of dynamic scenarios for
integrating information. The integration
process with geographic references is
widely accepted for implementing spatial
decision support systems. In terms of
land management, the watershed is the
area best suited for natural resource
management and allocation of land uses
for land sustainable development. The
maps and their associated statistic
provided the areas best suited to crop
combination. We can formulate the plan
by selecting crops with high economic
return for the land unit of particular
year. With GIS-based land evaluation,
it is also possible to revise land use
plans, as needed, in the future. It is
suggested that particular land unit
should be further analysed with
empirical research.
Suitability Area
Sq. Km. %
Highly suitable for rice (irrigation area) 2721.60 5.64
Highly suitable for rice (rainfed area) 872.41 1.81
Highly suitable for sugar cane 1052.49 2.18
Highly suitable for cassava 6009.44 12.45
Highly suitable for rubber-tree 780.76 1.62
สูงเหมาะสำหรับอ้อย และยางพารา 37.49 0.08
สูงเหมาะสำหรับมันสำปะหลังและยางพารา - 0.01
สูง เหมาะสำหรับ มันสำปะหลัง และอ้อย 2139.42 4.43
สูงเหมาะสำหรับมันสำปะหลัง อ้อย และยางพารา 854.42 1.77
รวมสูง พื้นที่ที่เหมาะสม 14472.24 29.99
เหมาะสำหรับข้าว 3215.04 6.66 เหมาะสมสำหรับอ้อย 40.26 0.08 เหมาะสำหรับ 1681.12 3.48
มันสําปะหลังเหมาะสำหรับต้นยาง 87.10 0.18
เหมาะสำหรับอ้อยและยางพารา 7.36 0.02
เหมาะสำหรับมันสำปะหลังและอ้อย 2655.07 5.50
เหมาะสำหรับ มันสำปะหลัง และยางพารา 207.01 0.43
เหมาะสำหรับมันสำปะหลัง อ้อย และยางพารา 2921.13 6.05
รวมกับพื้นที่ 10814.09 22.4
รวมสูงเหมาะกับพื้นที่ 25286.33 52.39
ไม่เหมาะสม 20327.54 1466.12 3.04
และชุมชนWater body 1189.18 2.46
Total of non-agriculture 2655.30 5.50
Total 49,477.00 100.00
Highly suitable for rice (irrigation area)
Highly suitable for rice (rainfed area)
Highly suitable for sugar cane
Highly suitable for cassava
Highly suitable for rubber-tree
Highly suitable for sugar cane and rubber tree
Highly suitable for cassava and rubber tree
Highly suitable for cassava and sugar cane
Highly suitable for cassava, sugar cane and rubber
tree
Suitable for rice
Suitable for sugar cane
Suitable for cassava
Suitable for rubber tree
Suitable for sugar cane and rubber tree
Suitable for cassava and sugar cane
Suitable for cassava and rubber tree
Suitable for cassava and sugar cane and rubber
Unsuitable
Community
Water body
Chi boundary
Agricultural La
การแปล กรุณารอสักครู่..
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