نتایج جستجو برای: pasture land
تعداد نتایج: 124794 فیلتر نتایج به سال:
Distributed erosion models are potential tools for identifying soil sediment sources and guiding efficient Soil and Water Conservation (SWC) planning. However, the uncertainty of model predictions has yet to be resolved. Splash erosion is one of the most important mechanisms in soil loss. In this study, monthly splash detachment rates were predicted using the Morgan, Morgan and Finney (MMF) emp...
Large-scale cattle and crop production are the primary drivers of deforestation in the Amazon today. Such land-use changes can degrade stream ecosystems by reducing connectivity, changing light and nutrient inputs, and altering the quantity and quality of streamwater. This study integrates field data from 12 catchments with satellite-derived information for the 176,000 km(2) upper Xingu watersh...
Australia's "Direct Action" climate change policy relies on purchasing greenhouse gas abatement from projects undertaking approved abatement activities. Management of soil organic carbon (SOC) in agricultural soils is an approved activity, based on the expectation that land use change can deliver significant changes in SOC. However, there are concerns that climate, topography and soil texture w...
Annual land-use decisions of settlement farmers, estimated to approach half a million in the Amazon, can have significant impacts on forest conversion of the largest tropical moist forests. Given the biodiversity and climate change consequences of the disappearance of this forest, it is pivotal to understand these farmers’ reactions to combinations of technologies, policies, and institutional a...
The "Measured Annual Nutrient loads from AGricultural Environments" (MANAGE) database was developed to be a readily accessible, easily queried database of site characteristic and field-scale nutrient export data. The original version of MANAGE, which drew heavily from an early 1980s compilation of nutrient export data, created an electronic database with nutrient load data and corresponding sit...
Splash erosion is one of the most important water erosion types, causing initiation of other types of water erosion. The objective of this study is to model the splash erosion using fuzzy logic approach in part of northern Karoon basin. The major land usage in the area are irrigated farming, dry land farming, pasture and degraded pasture. For the purposes of this study, soil properties includin...
It is being argued that there will exist high reliance upon agriculture lands and resources as a provider of food for population in coming decades. The increase in urban land, industrial and residential land uses at the expenses of agricultural lands is among the major consequences of population increase. However, the utilization of soil, water, forest and pasture are geared toward extensive an...
The wet, warm West Coast climate favours tree production and pastures. Much of the land remains in indigenous forest under the control of Government agencies. In the more accessible parts of this land, and in land held under private ownership, we explore the feasibility of “farming” two examples of native biodiversity. Sphagnum moss production varies with location and differences in mesoand mic...
Despite implications for both humans and the environment, a scant body of research examines fertility in forest frontiers. This study examines the fertility– environment association using empirical data from Ecuadorian Amazon between 1980 and 1999. Fertility dramatically declined during this period, and our empirical models suggest that households’ relationship to land partially explains this d...
This paper discusses the implications of poor or non-existent information on soil quality, at the proper scale, during the planning and implementation of settlement projects in the Brazilian Amazon. Based on data from the Machadinho settlement project, Rondônia, we show that most settlers had no knowledge about the agricultural capability of the area, did not receive technical information, coul...
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