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Spatial Assessment of Land Degradation Risk for the Okavango River Catchment, Southern Africa

Journal Articles & Books
Diciembre, 2016
África austral
África

The Okavango catchment in southern Africa is subject to environmental as well as socio‐economic transformation processes such as population growth and climate change. The degradation of soil and vegetation by deforestation and overgrazing is one of the downsides of this development, reducing the capacity of the land to provide ecosystem functions and services. In this study, climate simulations are brought together with secondary socioeconomic, pedologic and remote‐sensing data in a GIS‐based assessment of the factors commonly associated with land degradation risk.

Evaluation of the Effects of Climate Change on Groundwater Recharge Using a Hybrid Method

Journal Articles & Books
Diciembre, 2016

In this study, a new framework was developed for the estimation of groundwater recharge based on a hybrid method. In this regard, the homogeneous recharge zones were determined by the analytical hierarchy process (AHP). The recharge rates in these zones were calculated using the Thornthwaite and Mather’s method. These zones and their recharge rates were entered into the MODFLOW model. Next, the modeling processes, modification of recharge, and calibration of empirical models were interactively continued in the MODFLOW.

Environmental changes in the Polish agriculture - toward the bio-economy

Conference Papers & Reports
Diciembre, 2016
Polonia
Letonia

This paper attempts to provide an interdisciplinary concept of the bio-economy in the context of environmental changes in the Polish agriculture. Various definitions of bio-economy have been presented and its place in the sustainable development theory has been described. The aim of this paper is to present the environmental changes in Polish agriculture in the context of the bio-economy. For this purpose uses the information published by the Central Statistical Office and Eurostat. To showcase and presentation methods were used descriptive and tabular.

Water Efficient Cropping Systems for Semi-Arid Regions in Pakistan

Journal Articles & Books
Diciembre, 2016
Pakistán

Water scarcity and land degradation are emerging threats to global food production. The dry land regions of world are affected by climate change to a greater extent and facing food insecurity. The current pattern of food production has been estimated to be inadequate to meet demands of growing population and required around 38% increase to meet world`s food demands by 2025. Food insecurity in erosion hit dry land regions of Pakistan also demands development of resource-efficient cropping systems to meet the food needs of population growing.

Influence of temperature on biomass production of clones of Atriplex halimus

Journal Articles & Books
Diciembre, 2016
Italia

A very effective tool to combat desertification is revegetation. Promising species for this purpose are the evergreen shrubs of the genus Atriplex. The objective of the research was to study the growing responses of Atriplex halimus under different thermal regimes and to evaluate the biomass accumulation of selected clones. The test was carried out in four sites of Sardinia Island (Italy) characterized by different latitude, altitude and air temperature trends along the year. In every site, potted plants of five clones of A.

Effects of land use and land cover on selected soil quality indicators in the headwater area of the Blue Nile basin of Ethiopia

Journal Articles & Books
Diciembre, 2016
Etiopía

Understanding changes in soil quality resulting from land use and land management changes is important to design sustainable land management plans or interventions. This study evaluated the influence of land use and land cover (LULC) on key soil quality indicators (SQIs) within a small watershed (Jedeb) in the Blue Nile Basin of Ethiopia. Factor analysis based on principal component analysis (PCA) was used to determine different SQIs.

Taking Stock, December 2016

Reports & Research
Training Resources & Tools
Diciembre, 2016
Viet Nam
Asia oriental
Oceanía

Over recent decades, Vietnam’s agricultural sector has made enormous progress, realizing major gains in productivity and output and contributing to national goals related to food security, poverty reduction, social stability, and trade. Nevertheless, there are growing concerns related to the quality and sustainability of Vietnam’s agricultural growth and related patterns of development.

Contradictory hydrological impacts of afforestation in the humid tropics evidenced by long-term field monitoring and simulation modelling

Journal Articles & Books
Diciembre, 2016
Laos
Viet Nam

The humid tropics are exposed to an unprecedented modernisation of agriculture involving rapid and mixed land-use changes with contrasted environmental impacts. Afforestation is often mentioned as an unambiguous solution for restoring ecosystem services and enhancing biodiversity. One consequence of afforestation is the alteration of streamflow variability which controls habitats, water resources, and flood risks. We demonstrate that afforestation by tree planting or by natural forest regeneration can induce opposite hydrological changes.

Impacts of uncontrolled logging on the Miombo woodlands of the Niassa reserve in Mozambique.

Conference Papers & Reports
Diciembre, 2016
Mozambique

This study evaluated the conservation status of tree populations and the impact of illegal logging in the Niassa National Reserve, a huge protected area in northern Mozambique, bordering Tanzania. The Miombo woodland around 8 villages was sampled on 43 transects laid out from log patios showing evidence of felling. Standing trees and stumps of 8 timber species (P. angolensis, A. quanzensis, M. sthulmannii, B. africana, C. imberbe, D. melanoxylon, P. angolensis and S. madagascariensis) were identified, quantified and measured.