YU Wen-zheng, CHANG Qing-rui, WANG Rui, et al. Analysis of Evolution and Impact Mechanism of Cultivated Land in Tsinghai Lake Region[J]. Bulletin of Soiland Water Conservation, 2006, 25(5): 19-22.
YU Wen-zheng, CHANG Qing-rui, WANG Rui, et al. Analysis of Evolution and Impact Mechanism of Cultivated Land in Tsinghai Lake Region[J]. Bulletin of Soiland Water Conservation, 2006, 25(5): 19-22.DOI:
Through analysis of total area of cultivated lands
change in internal structure and regional difference
we discussed the driving mechanism of cultivated land change in the Tsinghai Lake region.Results show that cultivated lands in the region exhibit an evolutionary tendency of steady increase
sharp increase
screw-type increase and sharp decrease.For the internal structure
area of irrigable land has increased greatly
and areas of both nearby mountains and tope mountains have a relatively declined tendency.Areas of irrigable land and other types of cultivated lands change alternately.Regional difference of cultivated lands is characterized by a tendency of increase
non-synchronized change and then decrease in the area for the entire region.Besides natural factors
the major national policies and the agricultural policies are responsible for the changes in cultivated lands of the region.