A combined agronomic and geographic approach has helped to explain forest agrosystem spatio-temporal dynamics in the forest regions of Guinea. The important expansion of cropping systems associating various perennial crops (coffee, kola, cocoa, fruit trees) and native spontaneous forest species – called “agroforests”- has been observed in 3 villages of the Kobela area. This spatial dynamic can be considered as the renewing of an ecosystem dominated in the past by forest.

Many cases of externalities in agricultural production such as pesticide drift, cross-pollination, and offensive odors are attributable to the incompatibility of neighboring land uses. This paper offers an examination of when an efficient activity arrangement is compatible with free-market incentives. Also, free-market and socially efficient activity arrangements are characterized in terms of spatial concentration of the externality generating uses.

Conversion of climax Dipterocarp forest for agricultural purposes has resulted in a decline in productivity of light textured soils in Northeast Thailand. To quantify the degree of chemical degradation that these soils have undergone, a survey was undertaken of six paired sites where adjacent Dipterocarp forest soils were compared to continuously cropped systems that had been under production from 37-100 years. Surface charge fingerprints along with soil chemical and physical attributes were determined on selective depth intervals.

In a course of the research there were studied ecological and economic regularities of land resources management. The research was realized in the conditions of the Republic of Belarus. As a result of realized research there was revealed that the system of methods of land resources management includes economic, administrative-legal, political, technical-technological, organizational-administrative, and social-psychological aspects.

A study on characteristics and fertility capability of acid sulfate soils under tropical monsoonal climate was carried out on six selected areas in Nakhon Si Thammarat province. Method of study included analysis of soil morphology in the field, laboratory analysis on physicochemical properties and mineralogical characteristics of soil samples according to standard methods and assessment of the soil fertility status and fertility capability. Results of the study revealed that these soils are lowland soils occupying areas ranging from 1 to 5 m above mean sea level.

14 pp. OCR and bookmarks supplied by UO. Maps, charts, figures. Published August, 2002. Captured February 4, 2009.

This article reviews, from a socio-economic perspective, the current state of knowledge and controversies around the causes and consequences of global climate change. It considers the prospects for reducing global emissions of greenhouse gases (GHGs) which, according to the scientific consensus, are the key anthropogenic drivers of climate change. The focus is on two major areas of economic activity, the agriculture, forestry and other land use sector and the energy sector, which together account for around 60% of global GHG emissions.

We constructed a gramineous plant-specific primer set-matK 792F1GC and matK 979R1, targeting the maturase K (matK) gene, for detection of gramineous raw materials in processed food. For this, we used polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). The primer set was evaluated using agarose gel electrophoresis and DGGE. Our results confirmed that the primer set was specific for gramineous plants. From our analysis, we confirmed that up to 6 types of gramineous plants can be simultaneously detected using PCR-DGGE.