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Displaying 181 - 192 of 372

From social-enquiry to decision support tools: towards an integrative method in the mediterranean rural environment

Journal Articles & Books
Diciembre, 2003

Policy-relevant approaches to assessing land-use change must be based upon a number of transdisciplinary mechanisms. This approach demands a number of skills—social enquiry, modelling and soft complex systems thinking, which are necessary to facilitate an effective cross-disciplinary dialogue. Underpinning the development of these transdisciplinary skills, and the acceptance of systems as complex and subject to multiple interpretations, is the need to move away from the desire to predict and towards enhancing the capacity to adapt.

Analyzing causes of desertification in Bayankhangai soum, Tuv province, central Mongolia

Journal Articles & Books
Diciembre, 2013
Mongolia

The aim of this paper was to develop a simple assessment for precisely appraising the status and trends of desertification in Bayankhangai soum. The Bayankhangai soum is in central Mongolia, which is a part of the Hustai National Park, and this soum (administrative subdivision) belongs to the Orhon and Tuul river basins of the Khangai mountain region, encompassing 100,733 ha, and 7170 ha that is specially protected. The current study is more focused on methods for assessing climate change, pastureland change by herders and land degradation assessment.

Desertification and livestock grazing: The roles of sedentarization, mobility and rest

Journal Articles & Books
Diciembre, 2011

Pastoralism is an ancient form of self-provisioning that is still in wide use today throughout the world. While many pastoral regions are the focus of current desertification studies, the long history of sustainability evidenced by these cultures is of great interest. Numerous studies suggesting a general trend of desertification intimate degradation is a recent phenomenon principally attributable to changes in land tenure, management, and treatment.

Impact of land use intensity on sandy desertification: An evidence from Horqin Sandy Land, China

Journal Articles & Books
Diciembre, 2016
China

It has been widely accepted that high land use intensity contributes to sandy desertification in Northern China. However, it is surprising that it is even not easy to find an explicit definition and proper indicator for the term “land use intensity” in the sandy desertification related literatures.

Spatio-temporal distribution pattern of vegetation coverage in Junggar Basin, Xinjiang

Journal Articles & Books
Diciembre, 2016

Vegetation coverage is an indicator used for exploring the growth of vegetation, which has attracted attention from ecologists owing to its significant role in ecological conservation and restoration. As an important component of the terrestrial ecosystem, changes in vegetation coverage reflect changes in the environment, especially with respect to arid areas. A change of vegetation coverage will trigger desertification, degradation of the eco-environment, and regional climate change.

Identification of hydrologic and geochemical pathways using high frequency sampling, REE aqueous sampling and soil characterization at Koiliaris Critical Zone Observatory, Crete

Journal Articles & Books
Diciembre, 2011

Koiliaris River watershed is a Critical Zone Observatory that represents severely degraded soils due to intensive agricultural activities and biophysical factors. It has typical Mediterranean soils under the imminent threat of desertification which is expected to intensify due to projected climate change. High frequency hydro-chemical monitoring with targeted sampling for Rare Earth Elements (REE) analysis of different water bodies and geochemical characterization of soils were used for the identification of hydrologic and geochemical pathways.

Challenges to Sustainable Development in China: A Review of Six Large-Scale Forest Restoration and Land Conservation Programs

Journal Articles & Books
Diciembre, 2014
China

Six national programs—including the Natural Forest Protection Program (NFPP), Sloping Land Conversion Program (SLCP), Desertification Combating Program around Beijing and Tianjin (DCBT), Shelterbelt Network Development Program (SNDP), Wildlife Conservation and Nature Reserve Protection Program (WCNR), and Industrial Timberland Plantation Program (ITPP)—were adopted as means to achieve the Chinese Government sustainable development national policy. While the programs have made promising progress circa 10 yr at the national level, problems exist at the regional and locals levels.

Desertification assessment and mapping in the Russian Federation

Journal Articles & Books
Diciembre, 2011
Rusia

For the first time assessment and mapping of desertification have been performed in Russia at the 1 : 2500000 scale using data of geometrical sounding of the earth and in accordance with the approaches recommended by the United Nations Convention to Combat Desertification (UNCCD). It is shown that desertified areas, areas experiencing desertification, and areas threatened by desertification occupy about 1250000 km2. Nineteen causes of changes in natural and natural-artificial systems, seven degradation trends, and three progradation trends are recognized.

Modeling the long-term natural regeneration potential of woodlands in semi-arid regions to guide restoration efforts

Journal Articles & Books
Diciembre, 2014

Understanding forest regeneration at sites previously used for agriculture underlies the establishment of science-based woodlands management policies. This is especially relevant in semi-arid areas, where the tree cover is critical in ameliorating the effects of aridity and in preventing desertification and land degradation. Natural regeneration in semi-arid areas occurs very slowly, which in part explains why it has hardly been studied.

Fifty Years on: Long‐term Patterns of Land Sensitivity to Desertification in Italy

Journal Articles & Books
Diciembre, 2016
Italia

The Mediterranean region has been regarded as a critical hotspot for desertification due to the impact of soil degradation, the land‐use changes and the climate variations. Few large‐scale studies have been devoted to analyse trends in land sensitivity to desertification in the northern Mediterranean basin. The present paper contributes to this deserving issue by quantifying the level of land sensitivity to desertification in Italy at seven points between 1960 and 2010 at a fine spatial scale.

Sediment in Alluvial and Lacustrine Debris Fans as an Indicator for Land Degradation Around Lake Ashenge (Ethiopia)

Journal Articles & Books
Diciembre, 2016
Etiopía

Sediments deposited by (paleo) flash floods can hold valuable information on processes of environmental change, land degradation or desertification. In order to assess the suitability of flash flood deposits as proxies for land degradation, we monitored a representative gully segment in North Ethiopia (Ashenge catchment), investigated a sequence of alluvial debris fans downstream of this segment and dated a neighbouring subaquatic debris fan using short‐lived ²¹⁰Pb isotope counting.