In this study, we have attempted to develop a land suitability model for saffron, an agronomic crop, which is economically viable, environmentally bearable and socially equitable at Khost Province of Afghanistan. The objective was to determine different land suitability classes for saffron cultivation using Analytical Hierarchy Process (AHP) and Geographic Information System (GIS). A decision tree was developed encompassing the physical, economic and social criteria.

In the Trás-os-Montes Region (Northeastern Portugal), olive tree plantations cover an area of more than 70 thousand ha (near the 6 % of the regional territory), mostly planted and cultivated under traditional non-mechanised cultural systems. It is fully recognised that the olive sector contributes significantly to the regional agro-economy, as well as to the conservation of certain typical landscapes.

That was to perform a determination of land suitability classes for agricultural land uses in Ankara Imrahor valley and vicinity with this study. First of all detailed survey and mapping of research area was performed with aid of satellite data and topographic maps then four different soil serials and their fourteen different mapping units were described. For this units, 38 different land uses were describe as their soil and meterological properties and calculated their suitability for this region and determined and mapping their land suitability classes for agricultural purposes.

Biomass is a geographically dependent renewable resource which can be used for production of fuels and chemicals. This study develops a methodology for determining the suitable locations, optimal sizes and number of biomass-based facilities for a particular region through transport cost optimization which is applied for locating pellet plants in the Province of Alberta. The methodology also includes computation of local optimal size and cost of pellet production considering road network and spatially varied biomass.

Nature conservation is a very important issue in the sustainability assessments and spatial planning context. Knowledge of the suitability of the land to behave as an ecological corridor thus provides very significant input to land-use planning. Nature conservation and land-use planning are by their nature spatial problems.

Land suitability evaluation can assist in the efficient use of land resources at a regional level. This is an important issue because of the pressures that an increasing population and economic growth have put on limited land resources. Matter-element theory, which was first put forward by the Chinese mathematician Cai Wen, has shown potential for solving incompatibility problems.

Vegetables are mostly grown in mountainous areas with an altitude >400 m a.s.l., such as Temanggung, Central Java. The steep slope farming considers very little environmental suitability and sustainability. This study was conducted in 2004, covering a total area of 87,223 ha. Soil samples were analyzed for soil texture, pH, C, N, P, K, CEC, exchangeable cations, and base saturation. Soil characteristics data were used for land suitability evaluation for vegetables crops using the Automated Land Evaluation System (ALES) program.

Identifying potentially suitable lands for cultivated crops is economically crucial. Geographical Information Systems (GIS) and Remote Sensing (RS) are very significant tools in achieving this goal. In the near future the Sanliurfa - Suruc Plain can be more valuable for the people of the region in terms of both crop variety and economical perspective once the irrigation is started and more than one crop each year is harvested. Pistachio is one of the chief productions among others that are well adapted to the conditions of the region.

In this study, great soil groups, erosion classes and land capability classes of Tokat province were digitized and analyzed by using geographic information systems (GIS). Settlements, bare rocky areas and water surfaces like reservoirs or lakes were excluded from the evaluation.

The aim of this study is to determine soil quality of the Kırsehir - Çiçekdağ Farm State Soils using parametric method. In parametric method, some physical and chemical characteristics of the soils such as texture, salinity, alkalinity, soil reaction, structure, carbonate content, cation exchange capacity, soil fertility, and some soil environmental properties of the soil mapping units such as slope, stoniness, rock fragments, gravel contents, erosion, drainage and precipitation were used.

Vegetable production has an increasing importance in most of the Asian countries. The leader in production per capita is China followed by South Korea, North Korea and Vietnam. In Vietnam, vegetable production is at the moment on 4th place of all agricultural commodities. In the past, in Vietnam as in other South-East-Asian countries, the production of rice, sugar cane, cassava and maize often as monoculture was typical.