Rainfall is crucial for the survival of ecosystems as it provides water for plants, animals, and microorganisms. Adequate rainfall promotes plant growth, which in turn supports a variety of food chains and habitats for different species. However, excessive rainfall can lead to flooding and erosion, disrupting ecosystems. Conversely, lack of rainfall can lead to drought conditions, which can have negative impacts on vegetation and wildlife.
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The amount of rainfall affects the flow of the streams within the watershed area, and ultimately how much water is stored in the watershed.
Vegetation affects the water budget by influencing evapotranspiration rates; more vegetation leads to increased water loss through transpiration. Rainfall directly impacts the water budget by providing a source of water through precipitation that can recharge groundwater and surface water bodies. Together, vegetation and rainfall play a critical role in maintaining the water balance of an ecosystem.
The five variables that affect life on land and air are temperature, humidity, sunlight, air quality (including oxygen levels and pollutants), and precipitation (rainfall or snowfall). These factors influence the types of organisms that can thrive in an ecosystem and play a crucial role in shaping biodiversity and ecosystems.
Rainfall in the tropical rainforest can vary, but it typically ranges from 80 to 400 inches (200 to 1,000 cm) per year. This constant and heavy rainfall is essential for supporting the diverse plant and animal species that thrive in this ecosystem.
Varied rainfall from year to year in the Indus plain can lead to water scarcity in dry years and flooding in wet years. This inconsistency can disrupt agriculture, affect water availability for irrigation, and impact overall ecosystem balance in the region. It may also challenge water resource management and planning efforts.