EXAMPLES OF SUSTAINABILITY IN THE WORLD.
South Korea is, in many ways, a model of reforestation for the rest of the world. When the Korean War ended, half a
century ago, the mountainous country was quite deforested. Since 1960, under the dedicated direction of President Park
Chung Hee, the South Korean government put into effect a national reforestation effort. Basing itself on the formation of
rural cooperatives, hundreds of thousands of people mobilized themselves to dig irrigation ditches and create terraces to
help the trees in the arid mountains. Today, the forests cover 65 percent of the country, an area that comes to
approximately 6 million hectares. When I drove through South Korea in November of 2000, I found it gratifying to see the
abundance of trees covering the mountains, which a generation ago were naked.
In Nigeria, the farmers who encountered a serious drought and the desertification of the 1980s, began, while they were
preparing the land for their crops, to allow some acacia shoots that grew in their fields to emerge. When those trees
matured, they reduced the wind velocity, and with that, soil erosion. Acacia, a pulse, fixes enriched nitrogen into the soil
and contributes to increased crop yield. During the dry season, the leaves and the pods supply forage for livestock. The
trees also provide the farmers with firewood. This act of allowing 20-150 shoots per hectare to grow to maturity over
about 3 million hectares has revitalized the agricultural community of Nigeria.
DIFFERENT PLACES IN THE USA.
ONE-EYED ARGENTINE DEER.
COSTA RICA AND THE IRIS.
USING THE IRIS