MK. SURVEI TANAH DAN EVALUASI LAHAN EKONOMI PENGGUNAAN LAHAN

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1 MK. SURVEI TANAH DAN EVALUASI LAHAN EKONOMI PENGGUNAAN LAHAN
Bahan kajian MK. SURVEI TANAH DAN EVALUASI LAHAN EKONOMI PENGGUNAAN LAHAN

2 The Market and Land Use Why is a particular piece of land used in aparticular way ? One piece of land used for agricultural production, Another for an industrial site, and A third piece of land used for office blocks. QUALITY & LOCATION of a piece of land KUALITAS LAHAN Kualitas lahan merupakan konsep “fungsional”, harus didefinisikan dalam kaitanhnya dengan aktivitas tertentu pemanfaatannya/penggunaannya. Kualitas lahan untuk memproduksi tanaman tgt pd iklim, topografi, tipe tanah, dan kesuburannya; semua faktor ini berpengaruh pd pertumbuhan tanaman, biaya produksi dan biaya panen. Setiap aktivitas penggunaan mempunyai persyaratan tertentu. LOKASI LAHAN Teori lokasi lahan ini pertama kali dikemukakan oleh von-Thunen dari Jerman. Teori ini berdasarkan pada biaya angkut hasil panen pertanian ke pasar. Nilai lokasi = f (biaya transportasi, jarak riil)

3 QUALITY OF LAND A : lahan kualitasnya rendah unt memproduksi jagung
B : lahan kualitasnya medium C : lahan kualitasnya tinggi. QUALITY OF LAND (a) Revenue & Cost Net revenue Total revenue Cost of production A B C (b) ceiling rent Low Kualitas lahan High

4 Teori Lokasi ini pertama kali dikembangkan oleh von Thunen.
Nilai lokasi sebidang lahan ditentukan oleh jaraknya dari pusat pasar; Jarak ini akan menentukan biaya transportasi hasil produksi lahan LOCATION OF LAND (a) Revenue , Cost, Ceiling rent (Rp/ha) Ceiling rent Cost of transport Total revenue Cost of production Pasar Jarak ke pasar (b) cost of transport Kentang Daging Pasar jarak ke pasar

5 LOCATION OF LAND Asumsinya: Kualitas lahan sama
Petani kentang akan bersedia menyewa lahan di dekat pasar dengan nilai sewa yang lebih besar dibandingkan dengan peternak sapi potong LOCATION OF LAND (a) Ceiling rent (Rp/ha) Daging Kentang X O X Jarak ke pasar Pasar Jarak ke pasar Daging Daging Kentang Pasar

6 Interaksi Lokasi - Kualitas Lahan
Biaya transportasi biasanya dipengaruhi oleh: 1. Aksesibilitas lahan thd jalur komunikasi / transport yg baik 2. Biaya transportasi meningkat linier dg jarak ke pasar 3. Kualitas lahan tidak seragam 4. ……. Interaksi Lokasi - Kualitas Lahan (a) Harga pasir atau batu bahan bangunan (Rp/ton) Revenue & cost (rp/ton) Harga pasir di pasar P Revenue per ton pasir dikurangi biaya transpor ceiling rent Q Extraction cost Lokasi A Lokasi B Pasar Jarak ke pasar Lokasi B mempunyai kualitas lebih baik untuk penambangan pasir dan batu, shg biaya ekstraksinya lebih murah

7 Industrial vs Urban Land-Use
Penetapan lokasi industri: 1. Biaya transportasi bahan mentah 2. Biaya distribusi hasil produksi ke pasar 3. Lokasi optimum  Total Biaya transport minimum Industrial vs Urban Land-Use Transport Cost per ton produce (Rp) (a). Heavy industry Total transport cost Transport cost of raw materials Transport cost of product Raw Material Jarak Market Biaya jagung (b). Usahatani Jagung Total biaya Biaya distribusi Biaya produksi Lahan usaha Jarak Pasar

8 Ceiling rent for Urban- sites
Penetapan lokasi industri: 1. Lokasi Toko A dan Toko B identik, hanya Toko A lokasinya lebih dekat dengan pusat kota 2. QA : Permintaan barang di toko A dg harga P 3. QB : Permintaan barang di toko B dg harga P Ceiling rent for Urban- sites Harga barang P Demand at A Demand at B QB QA Kuantitas barang Rp/ha ceiling rent operating cost Total revenue A B Pusat Kota Jarak

9 Urban Ceiling rent vs Landuse
Concentric landuse zoning : 1. The central zone is devoted to offices, dept. Store, commercial uses, etc. 2. Industry, residential uses, ets 3. Agriculture Urban Ceiling rent vs Landuse Ceiling rent Offices Manufacturing, Warehouses, Industry Residential agriculture Town centre Jarak Industry & Warehouses Offices Residensial Industry Pertanian

10 Land Use Planning Land use planning Land Suitability Analysis (LSA) Tiga fase dalam LSA : 1. Asses the requirements of potential activities 2. Determine the capability of the land resources 3. Match land resources capability to the needs of society Agricultural Land Use Planning (Teladan dari Young & Goldsmith) Enam alternatif penggunaan lahan adalah: 1. Annual cropping 4. Natural forest 2. Perennial cropping 5. Plantation forest 3. Livestock 6. Tourism & Recreation. (1). Asses requirements of potential activities Persyaratan Arable Cropping di Malawi (Young & Goldsmith, 1977) Karakteristik lahan Persyaratan Limitasi Diagnostic measure Drainage Free Poor Kelas drainase tanah Bahaya erosi Nil/Low High Slope; Soil permeability index Zone perakaran Deep soil Shallow soil Kedalaman efektif Easy root penetration Poor Tekstur / Struktur Retensi hara High Low KTK

11 Land Use Planning (2). Determine the capability of land resources
Aerial photography to identify areas characteristics Ground analysis to asses the diagnostic features of land unit Data management Analysis & interpretasi Suitability of land unit for arable cropping (Young & Goldsmith) Land unit Drainase Bahaya erosi Zone perakaran Suitability Lilongwe Mainly free drained Nil to Low Very good (deep Highly suitable (75% free, (Slope < 3%) well structured soil) (S1) 25% imperfect) Thiwi Mainly free Low to medium Moderate Marginally (Slopes 6o) Soil depth < 100 cm suitable (S3) Dedza Free Medium to high Poor (Shallow soils) Permanently mountains (steep slopes) not suitable (N2) Kesesuaian unit lahan untuk suatu aktifitas dinilai pd kisaran sekala: 1. S1 : Highly suitable 2. S2 : Moderately suitable 3. S3: Marginally suitable 4. N1: Currently not suitable 5. N2: Permanently not suitable.

12 Land Use Planning (3). Match land resource capability to the needs of activities Hasil LSA menyatakan “production possibility” untuk setiap land unit, belum mencerminkan “the best allocation” Alokasi penggunaan lahan lazimnya melibatkan kebijakan pembangunan daerah, sehingga seringkqali harus ada trade-off dalam pengambilan keputusan Suitability of land units Land unit Annual Perennial Livestock Natural Plantation Tourism and cropping cropping forests forests recreation Lilongwe S1 N2 S2 n.a. S2 n.a. Thiwi S3 N2 S2 S2 S2 n.a Dedza- N2 N1/N2 S2 S3 S1 S2 mountains Kelemahan LSA dari perspektif ekonomi: 1. Existing versus potential capability 2. Location, biasanya berkaitan dengan biaya transportasi dan konservasi SDA 3. External effects, biasanya berkaitan dengan pencemaran lingkungan

13 The Market and Land Use The foundations for a systematic understanding of the principles of land use were laid more than a century and a half ago by a scientifically minded North German estate owner named Johann Heinrich von Thünen.9 He set himself the problem of how to determine the most efficient spatial layout of the various crops and other land uses on his estate, and in the process developed a more general model or theory of how rural land uses should be arranged around a market town. The basic principle was that each piece of land should be devoted to the use in which it would yield the highest rent. An Introduction to Regional Economics ( Edgar M. Hoover and Frank Giarratani)

14 The Market and Land Use The Interaction of the Land Use and Transportation Markets in the MEPLAN Framework Source: Johnston, Rodier, Choy, and Abraham (2000).

15 CONCEPTS OF LAND SUITABILITY
LAND PROPERTIES: (*) Land Quality (*) Land characteristics LANDUSE: (*) Requirement DYNAMIC ANALYSIS : (*) Landuse Systems (*) Agroecological Zoning

16 What Is Land-Use Planning?
As population and human aspirations increase, land becomes an increasingly scarce resource, calling for land-use planning. Land-use planning is important to mitigate the negative effects of land use and to enhance the efficient use of resources with minimal impact on future generations. Land-use planning is defined as a systematic assessment of land and water potential, alternatives for land use, and the economic and social conditions

17 The Watershed Perspective
LAND-USE PLANNING Land and water resources are essential for farming, grazing, forestry, wildlife, tourism, urban development, transport infrastructure, and other environmental functions. The increasing demand for land, coupled with a limitation in its supplies, is a major cause for more conflicts over land use throughout the world. The Watershed Perspective Each type of land use has a varying effect on the hydrologic cycle , thereby affecting the people and the natural resources on a landscape. A watershed perspective can be used to scientifically study the effect of land uses on water and downstream ecosystems . A watershed is defined as a topographically delineated area drained by a stream system; that is, the total land area above some point on a stream or river that drains past that point. A watershed acts as a receiver, collector, and conveyer of precipitation on a landscape. Land uses affect these pathways by altering surface runoff and groundwater infiltration, thereby changing the quantity and quality of water resources. Read more: Land-Use Planning - river, effects, important, system, source, effect, human

18 IMPACTS AND BENEFITS OF LAND USES
Natural vegetation, such as forest cover, is usually the most benign of land uses, with higher infiltration and reduced runoff rates. The opposites of forest cover are urbanized areas, where large surface areas are impermeable, and pipes and sewer networks augment the natural channels. The impervious surfaces in urban areas reduce infiltration and can reduce the recharge of groundwater. In addition, urban runoff contributes to poor water quality. Agricultural activities are major forms of land use, including row crops, rangelands, animal farms, aquaculture , and other agribusiness activities. Cropping activities involve soil and water manipulation through tillage and irrigation , thereby affecting runoff water and groundwater resources. If improperly used, fertilizer and plant protection chemicals in agricultural operations can affect water resources and ecosystems. Read more: Land-Use Planning - river, effects, important, system, source, effect, human

19 A typical planning process involves the following steps:
LAND-USE PLANNING A typical planning process involves the following steps: Establishing goals and a baseline; Inventorying and organizing resources; Analyzing problems; Establishing priorities and alternatives; Checking for land suitability; Evaluating alternatives and choosing the best option; Developing a land-use plan; Consulting and implementing the plan; and Revising the plan. Read more: Land-Use Planning - river, effects, important, system, source, effect, human

20 LAND USE, TRANSPORTATION, AND GROWTH
The complex relationship between transportation, land use, and growth in a REGION context. It describes the causes of growth generally and the link between transportation and growth specifically. Highway projects can affect the location, rate, type, or amount of growth in an area. Some types of development may be directly induced by a project (e.g., projects serving specific types of land development). However, most land use changes in a REGION are not direct consequences of a highway project, but rather occur indirectly due to changes in travel time and increased land accessibility in areas that may be ripe for development. The result may be a change in spatial distribution of development over time, such as commercial development around a new highway interchange. These types of growth-land use-transportation relationships are more complex and difficult to analyze than those for a project specifically designed to encourage or facilitate land use change and development.

21 FACTORS INFLUENCING LAND USE AND DEVELOPMENT
Source: FHWA May An Overview: Land Use and Economic Development in Statewide Transportation Planning.

22 GENERALIZED PROFILE OF LAND USE BY ECONOMIC VALUE.

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