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There are 2, 446 content items of different types and languages related to ordenamento sustentável da terra on the Land Portal.
Displaying 721 - 732 of 1358

spatial nexus between population growth and land degradation in a dry Mediterranean region: a rapidly changing pattern?

Journal Articles & Books
Dezembro, 2012
Itália
Europa

A better understanding of the spatial linkage between the distribution of land vulnerable to degradation and long-term population growth may contribute to sustainable land management of dry regions. Such a nexus has received increasing attention among politicians and local stakeholders, as its complex outcomes depend on mutual interactions between socioeconomic and biophysical factors. This is particularly true in southern Europe, where important processes of land degradation (LD) have been observed in recent years.

impact of livestock grazing management systems on soil and vegetation characteristics across savanna ecosystems in Botswana

Journal Articles & Books
Dezembro, 2015
Botswana

The objective of this study was to determine the impact of livestock grazing management systems on soil and vegetation dynamics under different environmental conditions of Botswana. Soil and vegetation were randomly sampled along transects located in three ranches and adjacent communal grazing land in 2009 and 2010. Our results showed that grazing management systems did not consistently affect soil texture, organic carbon, pH and bulk density.

Mapping global land system archetypes

Journal Articles & Books
Dezembro, 2013

Land use is a key driver of global environmental change. Unless major shifts in consumptive behaviours occur, land-based production will have to increase drastically to meet future demands for food and other commodities. One approach to better understand the drivers and impacts of agricultural intensification is the identification of global, archetypical patterns of land systems. Current approaches focus on broad-scale representations of dominant land cover with limited consideration of land-use intensity.

Deforestation, agroforestry, and sustainable land management practices among the Classic period Maya

Journal Articles & Books
Dezembro, 2012
Honduras

This article explores evidence of deforestation and forest management practices in the Maya lowlands during the pre-Columbian period. In the early twentieth century, scholars first began to examine the role of the environment in the rise and collapse of the great southern Maya polities of the Classic period, proposing that deforestation was an important factor in their political fragmentation and depopulation between the eighth and tenth centuries. In the last twenty-five years, this hypothesis has gained broad acceptance largely due to research at the ancient city of Copan, Honduras.

Socio-economic determinants of land degradation in Pishin sub-basin, Pakistan

Journal Articles & Books
Dezembro, 2011
Paquistão

Agriculture is the mainstay of rural populations, especially in the developing world. Increasing population and the demand for food, fodder and fuelwood have threatened the sustainability of the land resources. Without understanding farmers' perceptions on land-related issues, sustainable management of land resources is impossible because they have intimate knowledge of their land. Besides technical solutions to land-related problems, socio-economic appraisal also plays an important role for solutions to these problems.

Investigating syndromes of agricultural land degradation through past trajectories and future scenarios

Journal Articles & Books
Dezembro, 2014
Itália

In the last decades, due to climate changes, soil deterioration and land use/land cover (LULC) changes, land degradation (LD) has become one of the most important issues at the global, regional and local scale. In concrete terms, LD determines a reduction in the productivity of a territory and in its capacity of providing ecosystem goods and services. “Syndromes” of LD can be assessed in the past, and scenarios, conversely, can be developed for the future, as information baselines for sustainable land management strategies and interventions.

Vertical distribution and influencing factors of soil water content within 21-m profile on the Chinese Loess Plateau

Journal Articles & Books
Dezembro, 2013
China

In arid and semiarid regions that have deep soils, plant root systems can extract soil water to a depth of 20m or more. An accurate evaluation of soil water conditions in such regions is essential in order to improve the understanding of the role of soils as a water pool and to design scientifically based water management strategies. However, the vertical distribution of soil water and its storage in deeper layers are unclear due to the shortage of field data.

Conservation agriculture in eastern and southern provinces of Zambia: Long-term effects on soil quality and maize productivity

Journal Articles & Books
Dezembro, 2012
Zâmbia
África

Sustainable and resilient cropping systems are required in southern Africa to arrest declining soil fertility and offset the future negative effects of climate change. Conservation agriculture (CA) has been proposed as a potential system for improving soil quality and providing stable yields through minimum soil disturbance, surface crop residue retention (mulching) and crop rotations or associations. However, concerns have been raised about the lack of evidence of the benefits of CA for small-scale farmers in southern Africa.

review of methods, data, and models to assess changes in the value of ecosystem services from land degradation and restoration

Journal Articles & Books
Dezembro, 2016

This review assesses existing data, models, and other knowledge-based methods for valuing the effects of sustainable land management including the cost of land degradation on a global scale. The overall development goal of sustainable human well-being should be to obtain social, ecologic, and economic viability, not merely growth of the market economy. Therefore new and more integrated methods to value sustainable development are needed. There is a huge amount of data and methods currently available to model and analyze land management practices.

Organic Agriculture Supports Biodiversity and Sustainable Food Production

Journal Articles & Books
Dezembro, 2011

Biodiversity is vital to several important ecosystem services that ensure sustainability of food production. In organic agriculture, land management practices that promote biodiversity and soil quality are emphasized and the goal is to maintain a sustainable agricultural system. Soil quality or soil health is the foundation for all agriculture and natural plant communities and a primary indicator of sustainable land management. Soil quality is affected by farm management and land use decisions.

Biophysical suitability, economic pressure and land-cover change: a global probabilistic approach and insights for REDD+

Journal Articles & Books
Dezembro, 2014
Europa

There has been a concerted effort by the international scientific community to understand the multiple causes and patterns of land-cover change to support sustainable land management. Here, we examined biophysical suitability, and a novel integrated index of “Economic Pressure on Land” (EPL) to explain land cover in the year 2000, and estimated the likelihood of future land-cover change through 2050, including protected area effectiveness.

Integrating ecosystem services into spatial planning—A spatial decision support tool

Journal Articles & Books
Dezembro, 2016
Suíça

Urbanization is viewed as endangering more critical habitats of global value and is more ubiquitous than any other human activity affecting biodiversity, climate, water and nutrient cycles at multiple scales. Spatial and landscape planning can help create alternative urban patterns protecting ecosystems and thus supporting the provision of needed services they provide. While many approaches exist to make the values of nature explicit, new tools are needed to interpret the vast quantity of information in an integrated assessment to support planning.