资源 标记: Vegetation
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2020-01-01 *Available as Download Only African ecosystems comprise a wealthy repository of biodiversity, with a high proportion of native and endemic plant species, which makes them biologically unique and providers of a wide range of ecosystem services. A large part of African populations, in both rural...
- Cross-slope barriers are measures on sloping lands in the form of earth or soil bunds, stone lines, and / or vegetative strips for reducing runoff velocity and soil loss, thereby contributing to soil, water and nutrient conservation. This is achieved by reducing steepness and / or length of...
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1974-01-01 This book is divided in two section: vegetation types and vegetation and environment. The first section covers forest, rangelands, inland aquatic vegetation, sea coast, and high mountain vegetation. The second section looks at climate and soils. 257 pages, illustrated, photos