Rapid Development Correlates with Increased Land Surface Temperature and Reduced Vegetation

Why It Matters

Understanding these environmental shifts is critical for sustainable resource management. Designers and planners can use this information to anticipate the ecological impacts of development projects and implement strategies that mitigate negative environmental consequences, ensuring long-term resource availability and ecosystem health.

Key Finding

Over six years, the study area saw a substantial increase in agricultural land and built-up areas, accompanied by a rise in land surface temperature and a decline in vegetation, indicating a direct environmental impact of development.

Key Findings

• Agricultural cropland increased significantly from 33.82% to 43.39% of the study area.
• Built-up area increased by 17.49%.
• A negative correlation was observed between Land Surface Temperature (LST) and Normalized Difference Vegetation Index (NDVI).
• LULC changes were linked to an increase in LST.

Research Evidence

Aim: To identify vulnerable areas within the Lower Manair River basin by analyzing land-use/land-cover changes, land surface temperature, and vegetation index over a six-year period.

Method: Geospatial analysis using remote sensing and GIS.

Procedure: Satellite imagery from Landsat 8 was analyzed for the years 2015 and 2021 to classify land-use/land-cover (LULC). Changes in LULC, land surface temperature (LST), and normalized difference vegetation index (NDVI) were detected and correlated.

Context: River basin environmental management and urban/rural development planning.

Design Principle

Environmental impact is directly proportional to the rate and type of land-use change.

How to Apply

Before commencing any large-scale development project in a river basin, conduct a geospatial analysis to map current LULC, LST, and NDVI. Use this data to predict potential environmental changes and design mitigation strategies.

Limitations

The study is specific to the Lower Manair River basin and may not be directly generalizable to all river basins without further investigation. The temporal resolution of satellite imagery might miss short-term environmental fluctuations.

Student Guide (IB Design Technology)

Simple Explanation: When areas develop quickly, especially with more buildings and farms, they tend to get hotter and have less greenery.

Why This Matters: This research shows how human activities, like building more things, can change the environment in measurable ways, which is important for designing sustainable solutions.

Critical Thinking: To what extent can geospatial technologies accurately predict the long-term environmental consequences of specific development proposals?

IA-Ready Paragraph: This research highlights the direct environmental consequences of rapid development, demonstrating how increased built-up areas and agricultural expansion correlate with rising land surface temperatures and reduced vegetation cover. Such findings are crucial for informing design decisions aimed at mitigating ecological impact and promoting sustainable resource management in developing regions.

Project Tips

• When researching environmental impacts, consider using satellite imagery to track changes over time.
• Look for correlations between different environmental factors, like temperature and vegetation.

How to Use in IA

• Use this study as a precedent for investigating the environmental impacts of land-use changes in your own design project's context.

Examiner Tips

• Ensure your analysis of environmental impacts is supported by quantitative data, such as that derived from geospatial technologies.

Independent Variable: Land-use/Land-cover changes (e.g., increase in built-up area, agricultural expansion)

Dependent Variable: Land Surface Temperature (LST), Normalized Difference Vegetation Index (NDVI)

Controlled Variables: Geographic location (Lower Manair River basin), Time period (2015-2021), Satellite data source (Landsat 8)

Strengths

• Utilizes robust geospatial technologies for objective environmental monitoring.
• Provides quantitative data on environmental changes over a defined period.

Critical Questions

• What are the socio-economic drivers behind the observed LULC changes?
• How can these environmental impacts be effectively integrated into urban planning policies?

Extended Essay Application

• An Extended Essay could investigate the correlation between specific types of infrastructure development (e.g., highways, housing projects) and localized changes in LST and NDVI within a chosen region.

Source

Identification of vulnerable areas using geospatial technologies in the lower Manair River basin of Telangana, Southern India · Geomatics Natural Hazards and Risk · 2023 · 10.1080/19475705.2023.2296379