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Displaying 556 - 560 of 1605

Variability of Soil Organic Carbon stocks under different land uses: A study in an afro-montane landscape in southwestern Uganda

Journal Articles & Books
Décembre, 2013
Ouganda

We explore and compare quantities and patterns of Soil Organic Carbon (SOC) in protected forest and neighboring land around Bwindi Impenetrable National Park (a mountain protected area in Southwestern Uganda). We assessed paired sites of natural forest and major land uses (potato, tea and grazing lands) converted between 1973 and 2010. These pairings were replicated at three altitudinal zones. Plots (20m by 50m) were demarcated within each site. Five composite soil and core samples were obtained from 0 to 15cm (top-soil) and 15–30cm (sub-soil) at each plot.

Evaluation of best management practices under intensive irrigation using SWAT model

Journal Articles & Books
Décembre, 2013
Espagne

Land management practices such as conservation tillage and optimum irrigation are routinely used to reduce non-point source pollution and improve water quality. The calibrated and validated SWAT-IRRIG model is the first modified SWAT version that reproduces well the irrigation return flows (IRF) when the irrigation source is outside of the watershed. The application of this SWAT version in intensive irrigated systems permits to better evaluate the best management practices (BMPs) in such systems.

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

Journal Articles & Books
Décembre, 2013
Chine

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.

Conflict resolution through collaboration: Preconditions and limitations in forest and nature conservation controversies

Journal Articles & Books
Décembre, 2013
Suède

Increasing competition over the world's forest resources will likely aggravate conflict, though conflict should not be seen as bad per se. As the challenge is to develop institutions and practices capable of handling conflict constructively, various collaborative approaches involving disputing actors are evolving worldwide. In Sweden, most such approaches pertain to protected areas and few involve commercial forestry.