What are the two most common reasons for modifying the land in South and Southeast Asia

For thousands of years, humans have modified the physical environment by clearing land for agriculture or damming streams to store and divert water. As we industrialized, we built factories and power plants. While these modifications directly impact the local environment, they also impact environments farther away due to the interconnectivity of Earth’s systems. For example, when a dam is built, less water flows downstream. This impacts the communities and wildlife located downstream who might depend on that water.

Use these resources to teach your students how humans modify the physical environment and the compounding impacts those changes have.

Subjects

Earth Science, Geography, Geology, Human Geography, Physical Geography

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Page 2

From: Socioeconomic outcomes of agricultural land use change in Southeast Asia

Variable Description Original resolution Source
Altitude Elevation above sea level, m 1 × 1 km Hijmans et al. (2005)
Precipitation Annual precipitation, mm 1 × 1 km Hijmans et al. (2005)
Slope Derived from altitude, degrees 1 × 1 km Hijmans et al. (2005)
Temperature Average temperature (mean of monthly means), degrees Celsius 1 × 1 km Hijmans et al. (2005)
Distance to roads Average distance to nearest road for points in cell, m 1 × 1 km Derived from global road map (National Geospatial Intelligence Agency 2015) 
Gross Domestic Product GDP per capita in PPP, 2011 US$ Subnational units Kummu et al. (2018, 2020)
Market accessibility Indicator for the accessibility to markets, Index value 1 × 1 km Verburg et al. (2011)
Population density Distribution of human population, People/km2 1 × 1 km CIESIN (2017)
Poverty Share of population below national poverty line, % 1 × 1 km Elvidge et al. (2009)
Tree cover Canopy cover of vegetation taller than 5 m, percentage of cell 30 × 30 m Hansen et al. (2013)