Land dynamics that
form from the human-environment relationship in land change science can be
surprising. The landscape and the
anthropogenic impacts to its composition are a complex relationship. For example global demands on the environment
are rising and their accompany stresses on the environment are expected to grow
(Grau and Aide, 2008), but the land use systems are more complex then this
simple relationship and they seem to offer a degree of resilience in accommodating
these new pressures. At the same time if human policies are design in faulty
ways environmental stresses can be intensified. The goal is to understand land
dynamics in order to amplify land system resilience which decreasing human
impacts. This summary outlines two
processes on the landscape in which better understanding can lead to
better-regulated human-environment systems.
These processes are forest transition and indirect land use change.
Forest transition
in is simplest terms is when a region of the world experiences a shifts from
net deforestation to net reforestation (Meyfroidt et al., 2010; Pfaff and
Walker, 2010). This processes is
surprising in that it can be seen to be an analogue with development. When
countries are transition from subsistence to a developing economy, there are
high rates of deforestation using the natural capital to industrialize and shift
to manufacturing economy. This is accompanied by agricultural intensification
leading to abandoned lands and beginning of forest recovery. There is a growth of population in urban
areas that interact with the global markets to satisfy consumption. Examples of
countries currently going through forest transition are Costa Rica, Chile, El Salvador,
Bhutan, China, India, and Vietnam.
Developed nations like the United States (US), France, and other
European countries have already underwent forest transition. Rapidly developing countries like Brazil,
Indonesia, Cameroon, and Peru have had no forest transition, and still deforest
at high rates. This can be an attractive story line,
that development would save the forests, but countries that are having forest
transitions is a result of exporting the resource demands to other countries (Meyfroidt
et al., 2010; Pfaff and Walker, 2010).
This outsourcing of forest related lands is more then just timber
demands, but can also be agricultural demands.
Food and other natural resources that are not being produced in
developed countries like France and the US are one of the mechanisms leading
the reforestation trends. Further more
the intensification of agriculture, concentrating the production is sparing
more land for transition (Grau and Aide, 2008).
This can have social impact divorcing people from land production
leaving them out of work. Higher skill labor
is required in these new economies where people are replaced by machinery. Social programs and remittances are ways the
society resilience forms in this new paradigm. The question is how to transition forests
without outsourcing environmental degradation, and how to transform economies
without leaving whole groups of people behind.
Policy is the solution in constructing constraints into development.
Regions of the
world under heavy deforestation are under rapid development, but are trying to
design policies to encourage forest transition.
Land conversion restrictions are one popular policy that on face value
looks at responsible development. Lapola et al. (2010) analyzed one such
program in the manufacturing of biofuels from soy. In this case land use restrictions where
applied that production of soy could not take place on lands that were not
already degraded. This restriction
looked to stop forest conversion that would be driven by the development of
biofuels. The plan is faulty in that
they did not take into account indirect land use change. Development of biofuel production does not
take place in an isolated world, but in the context of the whole economy. Pricing current lands became more valuable in
supplying the demand needed for biofuel production. Other land uses were not restricted, simply
displacing land use to other parts of the country, which normally resulted in
deforestation. Without a comprehensive
approach the development of biofuels lead to indirect land-use change that made
the policy design have little net environmental benefit. Smarter policy is
needed, but without a complete understanding of land dynamics it is hard to
design.
Landscape change
and human use of the land adapt not only to the natural systems but also the
social system. Understanding land
dynamics is important in order to design better policy. Some activities can have indirect benefits of
consequences, and designing a constrained system that works toward benefits can
help in solving environmental problems. There is a need to research in human use of
the world in order to develop sustainably.
Works Cited
Grau, H. R., & Aide, M. (2008). Globalization and
land-use transitions in Latin America. Ecology and Society, 13(2),
16.
Lapola, D. M., Schaldach, R., Alcamo, J., Bondeau, A., Koch,
J., Koelking, C., & Priess, J. A. (2010). Indirect land-use changes can
overcome carbon savings from biofuels in Brazil. Proceedings of the
national Academy of Sciences, 107(8), 3388-3393.
Meyfroidt, P., Rudel, T. K., & Lambin, E. F. (2010).
Forest transitions, trade, and the global displacement of land use. Proceedings
of the National Academy of Sciences, 107(49), 20917-20922.
Pfaff, A., & Walker, R. (2010). Regional interdependence
and forest “transitions”: Substitute deforestation limits the relevance of
local reversals.Land Use Policy, 27(2), 119-129.
No comments:
Post a Comment