Topic > Human alterations, deforestation and related adverse effects

Human Development Index (HDI) information on life expectancy, education levels, adult literacy and gross domestic product (GDP) is been used to compare countries with high rates of deforestation. A World Bank database was used to obtain deforestation rates, population growth rates, and HDI values. The statistical analyzes used were tests and correlation coefficients to examine correlations between different factors. Scatter plots were used to observe how closely the results mirrored the Kuznets curve; an inverted U-shaped curve that predicts deforestation to increase, reach equilibrium, and then decrease. After two decades Jha and Bawa found that the human population growth rate and HDI increased with deforestation rates between 1.2% and 3.1%, with population growth between 0.9% and 0 ,9%. 3.8% and HDI 0.34 – 0.80. Increasing HDI correlates with higher education, lower levels of fertility, and longer life expectancy. A strong correlation (r = 0.53) was found between human population growth rate and deforestation (p<0.001) (CITATION). HDI and deforestation had an ap value of 0.02 and an r value of -0.40, a strongly negative correlation. The Kuznets curve was not supported by the results, deforestation continued to increase rather than stabilize. Population growth and HDI show a correlation with deforestation rates but these correlations have weakened over time, Jha and Bawa concluded that population and HDI values ​​influence deforestation. Jha and Bawa's hypothesis was supported but not as strongly as originally expected. They concluded that in addition to population and HDI values, political changes and development rates could influence deforestation rates. A generalized conclusion is that increasing population size in underdeveloped ecosystems... middle of the paper... of the earth. Human-dominated ecosystems. ScienceMag 277: 494-499. Jha S, KS Bawa. 2005. Population growth, human development, and deforestation in biodiversity hotspots. Conservation Biology 20: 906-912.Webb TJ, JK Gaston, H. Lee, and IF Woodward. 2005. Coincident scales of forest feedback on climate and conservation in a diversity hotspot. The Royal Society 273: 757-765.xFreedman A.H., W. Buerman, E.T.A. Mitchard, R.S. DeFries, and T.B. Smith. 2010. Human impacts flatten the rainforest-savanna gradient and reduce adaptive diversity in a rainforest bird. PloS ONE 9: e10388.Hahn, M.B., R.E. Gagnon, C. Barcellos, G.P. Asner, and J.A. Patz. 2014. Influence of deforestation, logging, and fires on malaria in the Brazilian Amazon. PLoS ONE 1: e85725.Schmidt LM. 1930. The Agricultural Revolution in the United States 1860-1930. Science 72: 585-594.