Definition of vegetation
Definition of vegetation and natural factors affecting it:
Introduction to vegetation:
Vegetation is all plants that cover and cover the surface of the earth and include trees, shrubs or small or large wild plants, algae and lichens, which originated naturally or for a human, which is the most important component of the environment, it is the outlet of the earth and a source of food for all living organisms, and produces oxygen gas (O2) necessary to breathe all forms of organisms through the process of photosynthesis using solar energy and absorption of carbon dioxide gas and preventing global warming, Rid the atmosphere of toxic gases, dust and harmful waste, and maintain the cycle of mineral and racist elements in the soil and enrich them and prevent their erosion
Drifting and repelling the wind, as well as being the source of food for humans and fodder for pets and wild animals, vegetation in any region is the biological factor that affects the species of animals and their presence in them.
The composition and geographical distribution of vegetation is the result of the interaction of a range of environmental factors that form the basic elements in the drawing of the plant image, most notably the climate, soil and topography, as plants vary depending on climate change and soil variation and both climate and soil are greatly affected by terrain, the type of soil under the same climatic conditions varies in origin depending on its location from severe declines or in flat ground.
Remote sensing is a highly efficient economic means of collecting information on land covers, and remote sensing has become even more so that information about vegetation and its health can be obtained and its stages of growth can be followed through multi-band visuals. Plant evidence in detecting change in the state, health and density of vegetation included different wavelengths.
Natural factors affecting vegetation:
The climate is influenced by a range of variables that lead to its difference from region to region and is a natural factor that affects human life and activities, and it is known that the climate in general determines the types of plants that grow in each region, and the elements of climate are considered one of the most important factors related to vegetation, and through their effective impact they change the density and distribution of vegetation.
The heat and rain elements have a very important impact on vegetation density and the varying prevalence of plant species, and the importance of the solar radiation element is reflected in the process of photosynthesis and food formation. In addition to the impact of wind, its strength, direction, speed and climatic characteristics on plant growth, the wind has negative and positive effects such as mechanical and physiological effects, as well as its impact on pollinated insects and the spread of insects and harmful seeds.
Soil is one of the main factors that directly affect the life of plants because it represents the environment in which plants of all kinds and communities live and consist of minerals resulting from weathering and rock carving factors, as chemical weathering is the most important factor in its development with important materials for feeding plants such as magnesium, potassium, calcium, little sulfur and copper of importance in the process of photosynthesis, In addition to organic substances resulting from the degradation of the remnants of plants and other organisms, it is the substance on which plants and crops depend for their growth because of the conditions they provide for plant germination and storage of water and nutrients.
The elements of the shape of the earth’s surface affect the vegetation and are mainly the degree of decline of the earth’s surface and its direction and the amount of height, and the degree of decline of the earth’s surface affects the speed of discharge of water, on the slopes of low slopes, where a large proportion of rainwater leaks into the ground and benefits the plant for a long time, causing the surface to slope to the soil cliff and strip it and become low fish, helping to grow short grass or plants that bear drought. While the soil on the flat or low slope slopes is thicker and the level of internal water is higher, the area becomes swamps that help grow aquatic plants