land use
AGROVOC URI: http://aims.fao.org/aos/agrovoc/c_4182
Landscape factors influencing lake phosphorus concentrations across Minnesota
Total phosphorus (TP) concentrations are known to be a significant factor influencing fish populations in Minnesota lakes. Consequently, a primary focus of the Minnesota Department of Natural Resources to address fish habitat in lakes across the state has been to determine relationships between TP concentrations and watershed conditions in Minnesota lakes. Because phosphorus concentrations in Minnesota lakes vary widely corresponding to differences in geomorphology, nutrient criteria were established by the Minnesota Pollution Control Agency for specific ecoregions.
Cultivation effects on temporal changes of organic carbon and aggregate stability in desert soils of Hexi Corridor region in China
Эколого-экономические аспекты эксплуатационно-воспроизводственных процессов в сфере сельскохозяйственного землепользования Ставропольского края
The article examines the use of the fertile layer of soil and its reproduction, shows the qualitative
composition of lands of Stavropol Territory. Some basics mechanism of reproduction of agricultural land are presented. The main methods of reproduction of fertility of the soil – agrotechnical actions (use of rational system of agriculture – optimum crop rotations, chemicalixation, melioration) are proved.
Formulation of sustainable groundwater resources and environmental management
Effect of land use and management on soil bacterial biodiversity as measured by PCR-DGGE
Agricultural land use and sugarcane residue management effects on soil bacterial communities at two long-term sites in KwaZulu/Natal, South Africa, were investigated by PCR-DGGE. Land uses at site 1 were maize [M]; pre-harvest burnt sugarcane [SC]; permanent kikuyu pasture [KIK]; pine forest [PF]; wattle forest [W] and undisturbed native grassland [NAT], whereas land managements at site 2 were pre-harvest burning of sugarcane [Bto] or green cane harvesting with retention of a trash mulch [T] (with [F] or without [Fo] fertilizer additions).
Changes in the availability and uses of wild yams according to climatic dryness and land-cover in Western Burkina Faso (West Africa): a joint ecological and ethno-botanical approach using GIS and remote-sensing
The regional variability in the uses of wild yams is assessed according to their availability in relation with land-use and climatic conditions from the South to the North sudanian sectors in Western Burkina Faso. The study involves field studies and modelling of the geographical distribution of yams and seeks correlations between environmental and ethno-biological data. Terrain analysis consists of phyto-ecological surveys and interviews with local inhabitants. A cluster analysis of a multi-date image of data obtained by remote-sensing is used to assess land-cover.
CropScape: A Web service based application for exploring and disseminating US conterminous geospatial cropland data products for decision support
The Cropland Data Layer (CDL) contains crop and other specific land cover classifications obtained using remote sensing for the conterminous United States. This raster-formatted and geo-referenced product has been widely used in such applications as disaster assessments, land cover and land use research, agricultural sustainability studies, and agricultural production decision-making. The traditional CDL data distribution channels include paper thematic maps, email data requests, CD/DVD media, and ftp bulk downloading.
Ecological and social characterization of key resource areas in Kenyan rangelands
Expansion to abandoned agricultural land forms an integral part of silver fir dynamics
Silver fir (Abies alba Mill.) is a tree species distributed mainly in central Europe. It once was a dominant tree species within some forests of this region. The causes for its rapid decline in the past two centuries have not yet been sufficiently explained. It is argued that human activities have been largely responsible for expansions and contractions of silver fir populations. On the basis of the current distribution of silver fir, historical maps and palaeoecological data, we describe the expansion of silver fir forests.
Indigenous claims and conflicts in managing the Abijata-Shalla Lakes National Park, Ethiopia
This paper examines claims and conflicts in the management of the Abijata-Shalla Lakes National Park in the Central Rift Valley of Ethiopia. We used data from households, key informants (elders, park managers), and focus group discussions. Poor wildlife policy resulting in space competition between wildlife and humans (other forms of land use), limited means of revenue generation for insiders and centralized benefits from tourism have accumulated grievance and then conflict between national park authority and local communities.
Assessing the effects of landscape pattern on river water quality at multiple scales: A case study of the Dongjiang River watershed, China
Understanding how land use and land cover change influences the flow and water quality of rivers is critically important for river management and restoration. Human activities have transformed the landscapes in southern China where damaged river systems need to be restored and better managed for achieving environmental sustainability. Toward this end, we quantified the land use and land cover pattern of the Dongjiang River watershed, China between 1990 and 2006 based on remote sensing data and field measurements.