ins Flashcards
unit 1 (62 cards)
Causes & Consequences of degradation of landscapes
Cause : Urbanization, deforestation, unstable agricultural practices (over grazing), infrastructure development
consequences : Loss of bio-diversity, climate change, erosion, health & economic impacts
What is land degradation
Landscape degradation refers to the decline in health and productivity of land due to various factors (natural & man-made)
Causes
human activities : invasive species, mining and quarrying and pollution
what is urbanization
Rapid expansion of cities leads to the sealing of land with concrete reducing soil quality and natural vegetation. It also increases waste and pollution
Agricultural practices
: Overuse of chemical fertilizers and pesticides along with intensive farming
Deforestation
Clearing forests removes tree cover that protects soil from erosion. Without roots to anchor the ground rain easily washes away topsoil
Mining and quarrying
These activities strip the land of vegetation and soil leaving barren areas prone to erosion. They also introduce toxic substances into the environment.
Climate change
Changing rainfall patterns and extreme weather events disrupt soil stability and moisture levels. Droughts and floods both accelerate land degradation.
invasive species : Non-native plants or animals can outcompete local species
leading to the breakdown of native ecosystems and loss of soil productivity.
Overgrazing
Excessive grazing by livestock reduces plant cover compacts the soil
Pollution
Contaminants from industry agriculture
Infrastructure Development
: Construction of roads buildings
Consequences
Loss of biodiversity : Land degradation destroys habitats and disrupts ecosystems
leading to a decline or extinction of plant and animal species. It weakens the natural balance and resilience of environments.
Soil erosion and degradation : Topsoil is washed or blown away
reducing fertility and making it harder for crops and plants to grow. It also leads to desertification in severe cases.
Altered water cycles : With fewer plants and damaged soil
less water is absorbed into the ground
Climate change contribution : Degraded lands release stored carbon into the atmosphere
especially when forests are cleared. Loss of vegetation also reduces carbon absorption
Economic impacts : Farming becomes less productive
affecting food supply and income
Health impacts : Dust
pollutants
Aesthetic & recreational loss : Natural landscapes lose their beauty and appeal
affecting tourism and cultural connections to the land. People may lose access to green spaces and recreational areas.
CONCLUSION
Requires a multifaceted approach inviting sustainable tourism and practices
policy interventions and community engagement. Awareness and action need to be taken at both local and global levels are essential for preserving ecological health and ensuring the wellbeing of future generations.
Factors that affect the weather and climate of an area.
NEW TOPIC
Latitude: Areas closer to the equator receive more direct sunlight
making them warmer. Areas near the poles get slanted rays