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- W2355567222 abstract "Long period research of vegetation cover change will help to reveal the dynamic characteristics of regional terrestrial ecosystem.Based on the imageries of three periods in 1988,2000 and 2007,we analyzed the vegetation cover change combined with forest inventory database in the Three Gorges Reservoir Area.The Unsupervised Classification was used to classify the vegetation cover types,and some mathematic models were applied to study the spatio-temporal changes of vegetation cover during the 20 years in the Three Gorges Reservoir Area,such as vegetation cover type transferring matrix model,land use dynamic model and land use degree model.The main results showed that the area of the vegetation cover decreased continuously during the past 20 years in the Three Gorges Reservoir Area,but the rate had a slower decrease.The area of the arbor forest(including coniferous forest,broadleaved forest and mixed wood) had reduced and the change quantity was very large,however,the area of the shrubbery had increased constantly.The main transfer direction during the period of 1988~2000 was the mutual transfer in various vegetations cover type and between the vegetation cover types and the cropland.Coniferous forest transferred mainly into cropland and shrubbery,broadleaved forest transferred into coniferous forest mainly,mixed wood transferred into cropland mainly,and shrubbery into cropland mainly.The main tendency during 2000~2007 was the mutual transfer between the vegetation cover types and the cropland.The rate of the transferring of coniferous forest,broadleaved forest,mixed wood and shrubbery into cropland were 8.27%,60.33%,47.2% and 29.11% respectively;and the rate of contribution were 3.92%,10.15%,1.04% and 13.18% respectively.And it was also found that the transferring rate and contribution rate of the vegetation cover type changing into the residential land in 2000~2007 had been higher than that in 1988~2000.The total land use degree index of Three Gorges Reservoir Area was above the medium level and higher than the national average level.And the tendency of the land use degree in the Three Gorges Reservoir Area increased obviously.The driving forces for vegetation cover change in the Three Gorges Reservoir Area were the Three Gorges Project,national policy,economic development and urbanized construction." @default.
- W2355567222 created "2016-06-24" @default.
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- W2355567222 date "2011-01-01" @default.
- W2355567222 modified "2023-09-24" @default.
- W2355567222 title "VEGETATION COVER CHANGE IN THE THREE GORGES RESERVOIR AREA DURING 1988～2007" @default.
- W2355567222 hasPublicationYear "2011" @default.
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