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Predicting the Effects of Climate
Change on Soil Loss
You will learn how
multiple factors
contribute to soil erosion.
You ...

The RUSLE has multiple factors that allow scientists
to estimate annual soil loss for a particular site.
Your job:
 Compa...

The RUSLE has multiple factors that allow scientists
to estimate annual soil loss for a particular site.
• R = rainfall an...

Estimated average soil loss =
R*K*LS*C*P
The RUSLE equation can be used as a framework
for considering how different facto...

Estimated average soil loss =
R*K*LS*C*P
The RUSLE equation can be used as a framework
for considering how different facto...

Estimated average soil loss =
R*K*LS*C*P
The RUSLE equation can be used as a framework
for considering how different facto...

Activity: Human activity vs. natural processes
• Which of these two factors do you think has
the most influence over…
– Su...

Climate change also influences agriculture.
• Go to video

Climate change is predicted to impact precipitation during the
summer growing season.
What are the
predicted changes for
y...

The relationship between precipitation and soil erosion is a
complex system.
Estimated average soil loss =
R*K*LS*C*P

?
The relationship between precipitation and soil erosion is a
complex system.

This diagram illustrates relationships between factors that
influence erosion in agricultural systems.
Modified from: Prus...

The direction of the arrows indicates cause and effect
relationships.
(diagram modified from Pruski and Nearing, 2002)

For example, this arrow tells us that changes in precipitation
cause changes in runoff.
(diagram modified from Pruski and ...

If it were pointing the other way, that would mean that changes
in runoff cause changes in precipitation. This doesn’t mak...

But, the direction of the arrows doesn’t tell us how a factor
impacts other factors.
(diagram modified from Pruski and Nea...

The + and – signs indicate what type of relationship exists
between the factors.
(diagram modified from Pruski and Nearing...

A positive relationship means that a change in one factor causes
an effect on another factor in the same direction.
(diagr...

For example, this arrow indicates that…
an increase in precipitation causes an increase in runoff
AND
a decrease in precip...

(diagram modified from Pruski and Nearing, 2002)
-
-
A negative relationship means that a change in one factor
causes an e...

(diagram modified from Pruski and Nearing, 2002)
-
For example, this arrow indicates that…
an increase in crop yield cause...

So, we can use this diagram to describe relationships between
factors that influence erosion in agricultural systems and p...

Models for Syracuse, Nebraska, predict that precipitation will
decrease overall for the region. Erosion is also expected t...

The same models predict that, while precipitation decreases
overall for the region, erosion is expected to increase for
co...

Based on these pathways, which crop do you think is more
severely impacted by the decrease in precipitation?
(diagram modi...

In agricultural systems, humans also make decisions that can
have big impacts.
What are some ways in
which humans influenc...

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