By Eric F. Lambin, Helmut Geist, Ronald R. Rindfuss (auth.), Eric F. Lambin, Helmut Geist (eds.)
The e-book offers contemporary estimates of the premiums in alterations of significant land sessions equivalent to woodland, cropland and pasture. one of the causative mechanisms at the back of land switch, synergetic issue combos are came across to be extra universal than unmarried key issue factors. Aggregated globally, a number of affects of neighborhood land alterations are proven to seriously have an effect on crucial facets of Earth procedure functioning. cutting edge advancements and functions within the fields of modeling and situation building are awarded. eventually, conclusions are drawn in regards to the so much urgent implications for the layout of applicable intervention rules, and on new instructions and frontiers of research.
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Extra info for Land-Use and Land-Cover Change: Local Processes and Global Impacts
2 Recent Changes in Agricultural Areas Historically, humans have increased agricultural output mainly by bringing more land into production. The greatest concentration of farmland is found in Eastern Europe, with more than half of its land area under crops (Ramankutty et al. 2002). In the United Kingdom, about 70% of its area is classified as agricultural land (cropland, grassland/rough grazing), with agriculture and areas set aside for conservation or recreation intimately intertwined (Hails 2002).
2002). 43% per year). 7 million ha of forest were visibly degraded (but this does not include forests affected by selective logging). 9% per year). 33%, respectively). However, in terms of extent, Latin America lost about the same area of forest as Southeast Asia between 1990 and 1997. 21% per year). 07% for Africa). Deforestation is not widespread throughout these regions, but rather is largely confined to a few areas undergoing rapid change, with annual rates of deforestation ranging from 2% to 5% (Achard et al.
4a. 3 · Most Rapid Land-Cover Changes of the Last Decades: Rapid and Extensive While gauging these estimates, a caveat to note is that changes in dry tropical forests are difficult to estimate from coarse-resolution remote sensing imagery, and while country estimates may have overestimated deforestation, coarse-resolution remote sensing estimates may underestimate deforestation (FAO 2001a). Indeed for Africa, the AVHRR-based estimate of net forest change in the 1990s for both humid and dry tropics is less than for the Landsat-based estimate of net forest change in the humid tropics alone, indicating that the AVHRR data likely underestimate deforestation in Africa where size of clearings are relatively small.