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Landscape development intensity index.

Mark T Brown¹, M Benjamin Vivas

¹Center for Environmental Policy, Department of Environmental Engineering Sciences, University of Florida, Gainesville, Floraida, USA. mtb@ufl.edu

Environmental Monitoring and Assessment

|March 2, 2005

Summary

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Human activity significantly impacts ecosystems. The Landscape Development Intensity (LDI) index quantifies this disturbance gradient using land use data, helping assess ecological impacts in watersheds.

Area of Science:

Environmental Science
Ecology
Conservation Biology

Background:

Ecosystem health is closely linked to human activity levels.
Intensive land use can negatively impact adjacent ecological communities through various direct and cumulative effects.

Purpose of the Study:

To introduce and describe the Landscape Development Intensity (LDI) index.
To provide a method for quantifying the human disturbance gradient in watersheds.

Main Methods:

Calculated LDI using land use data and a development intensity measure (energy use per unit area).
Applied the index to watersheds of various sizes, including river, stream, lake, and isolated wetland systems.
Utilized GIS land use/land cover data, aerial photographs, or field surveys for LDI calculation.

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Main Results:

The LDI index effectively estimates potential impacts from human activities on ecological systems.
The index serves as a land use-based ranking scheme for the human disturbance gradient.
Demonstrated applicability across different watershed scales.

Conclusions:

The LDI index is a valuable tool for assessing human-induced impacts on ecological communities.
It can be applied broadly using available land use and land cover data.
Facilitates a quantitative understanding of human disturbance in environmental management and research.