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Issueschangement climatiqueLandLibrary Resource
There are 5, 899 content items of different types and languages related to changement climatique on the Land Portal.
Displaying 553 - 564 of 1721

Keeping wetlands wet in the western United States: Adaptations to drought in agriculture-dominated human-natural systems

Journal Articles & Books
Décembre, 2013
États-Unis d'Amérique

Water is critical to protecting wetlands in arid regions, especially in agriculture-dominated watersheds. This comparative case study analyzes three federal wildlife refuges in the Bear River Basin of the U.S. West where refuge managers secured water supplies by adapting to their local environmental context and their refuge's relationship to agriculture in being either irrigation-dependent, reservoir-adjacent or diked-delta wetlands.

Sensitivity of freshwaters to browning in response to future climate change

Journal Articles & Books
Décembre, 2016
Suède

Many boreal waters are currently becoming browner with effects on biodiversity, fish production, biogeochemical processes and drinking water quality. The question arises whether and at which speed this browning will continue under future climate change. To answer the question we predicted the absorbance (a₄₂₀) in 6347 lakes and streams of the boreal region under future climate change. For the prediction we modified a numerical model for a₄₂₀ spatial variation which we tested on a temporal scale by simulating a₄₂₀ inter-annual variation in 48 out of the 6347 Swedish waters.

Assessing the mitigation potential of forestry activities in a changing climate: A case study for Karnataka

Journal Articles & Books
Décembre, 2010
Inde

The Clean Development Mechanism (CDM), Article 12 of the Kyoto Protocol allows Afforestation and Reforestation (A/R) projects as mitigation activities to offset the CO2 in the atmosphere whilst simultaneously seeking to ensure sustainable development for the host country. The Kyoto Protocol was ratified by the Government of India in August 2002 and one of India's objectives in acceding to the Protocol was to fulfil the prerequisites for implementation of projects under the CDM in accordance with national sustainable priorities.

role of tree domestication in green market product value chain development

Journal Articles & Books
Décembre, 2014
Afrique

Internationally, there is interest in increasing the trade in ‘green’ market products, such as organic, fair trade, reduction of deforestation and forest degradation/reduction of deforestation and forest degradation+ for reduced deforestation and mitigation of climate change, and environmental goods and services. This crucially needs to be extended to the many poor, hungry and marginalized smallholder farmers in developing countries.

Design of ecoregional monitoring in conservation areas of high-latitude ecosystems under contemporary climate change

Journal Articles & Books
Décembre, 2011

Land ownership in Alaska includes a mosaic of federally managed units. Within its agency’s context, each unit has its own management strategy, authority, and resources of conservation concern, many of which are migratory animals. Though some units are geographically isolated, many are nevertheless linked by paths of abiotic and biotic flows, such as rivers, air masses, flyways, and terrestrial and aquatic migration routes.

Synergistic effects of climate and land-use change on representation of African bats in priority conservation areas

Journal Articles & Books
Décembre, 2016
Afrique

Bats are considered important bioindicators and deliver key ecosystem services to humans. However, it is not clear how the individual and combined effects of climate change and land-use change will affect their conservation in the future. We used a spatial conservation prioritization framework to determine future shifts in the priority areas for the conservation of 169 bat species under projected climate and land-use change scenarios across Africa. Specifically, we modelled species distribution models under four different climate change scenarios at the 2050 horizon.

Responses to climate change and farming policies by rural communities in northern China: A report on field observation and farmers’ perception in dryland north Shaanxi and Ningxia

Journal Articles & Books
Décembre, 2013
Chine

To address land degradation and rural poverty the Chinese government has put in place a series of land conversion programmes in the Loess Plateau area in northern China. In addition to problems arising from unsustainable land use, water resource availability driven in part by climatic forcing is also a threat to livelihoods in this region. To understand climate impacts on farming practice in poor areas of China, field observation and village reconnaissance took place in the summer of 2009 in three selected counties of Shaanxi and Ningxia Province, northern China.

Irrigation Access and Vulnerability to Climate‐Induced Hydrological Change in the Ecuadorian Andes

Journal Articles & Books
Décembre, 2014

Climate change is projected to substantially alter the hydrological cycles of mountainous regions, with pronounced consequences for the human settlements in these areas. Because projections of climatic changes and their environmental and societal impacts in local settings are uncertain, policies to reduce vulnerability and strengthen adaptation should be informed by ongoing processes in sites already exposed to climatic variability and change.

Land cover and impervious surface extraction using parametric and non-parametric algorithms from the open-source software R: an application to sustainable urban planning in Sicily

Journal Articles & Books
Décembre, 2013
Italie

Detailed urban land-cover maps are essential information for sustainable planning. Land-cover maps assist planners in designing strategies for the optimisation of urban ecosystem services and climate change adaptation. In this study, the statistical software R was applied to land cover analysis for the Catania metropolitan area in Sicily, Italy. Six land cover classes were extracted from high-resolution orthophotos. Five different classification algorithms were compared. Texture and contextual layers were tested in different combinations as ancillary data.

impacts of climate change on Australia and New Zealand: a Gross Cell Product analysis by land cover

Journal Articles & Books
Décembre, 2011
Australie
Nouvelle-Zélande

This paper examines the newly constructed geographically scaled economic output measure, Gross Cell Product (GCP), of Australia and New Zealand to quantify the impacts of climate change in the region. The paper discusses advantages of using the GCP instead of the Gross Domestic Product. The paper reveals that the GCP falls sharply as temperature increases in the region. A 1°C increase in temperature would decrease the productivity with an elasticity of −2.4. A 1 per cent decrease in precipitation would decrease productivity with an elasticity of −2.3.

Assessment of rates of deforestation classes in the Paraguayan Chaco (Great South American Chaco) with comments on the vulnerability of forests fragments to climate change

Journal Articles & Books
Décembre, 2014
Paraguay

A large portion of the Occidental Region of Paraguay consists of a semi-arid territory with vegetation adapted to the features of this region. For just over a decade, a process of intense deforestation has resulted from the expansion of mechanized farming, carried out without any form of land management or planning; this has led to the fragmentation of the forests in this region.

Doubly segmented proxy images for multi-scale landscape ecology and ecosystem health

Journal Articles & Books
Décembre, 2003

Multi-band remotely sensed image data contain information on landscape pattern and temporal changes that are greatly underutilized in this technological era when monitoring of disturbance and ecological dynamics is increasingly important to address questions regarding sustainability of ecosystem health and climate change.