论渭河上游早期农业土地利用格局的演变

On Evolution of the Land Use Pattern of Primitive Agriculture in the Upper Reaches of the Weihe River

The upper reaches of the Weihe River and adjacent areas of the Xihanshui River is a part of the Loess Plateau west to Longshan Mountain and the northern Qinling Mountain,which is made up of the Valley Plain,the Loess hills and earth-rock mountains.In primitive society,Cultural methods changes from ash-pit-dibbling cultivation to fire-farming cultivation,then to bush-fallow cultivation.With cultivating methods evolution,the agricultural land-use pattern changes from scattered point to point-shaft,to point-shaft and shape-like strip.This process is essentially a land-use space by the river valley expanding to the loess hills,then to earth-rock mountain,the use of agricultural land in primitive society lays a future land-use pattern.

The upper reaches of the Weihe River and adjacent areas of the Xihanshui River is a part of the Loess Plateau west to Longshan Mountain and the northem Qinling Mountain, which is made up of the Valley Plain, the Loess hills and earth- rock mountains. In primitive society, Cultural methods changes from ash - pit - dibbling cultivation to fire - farming cultivation, then to bush - fallow cultivation. With cultivating methods evolution, the agricultural land- use pattern changes from scattered point to point- shaft, to point- shaft and shape- like strip. This process is essentially a land- use space by the river valley expanding to the loess hills, then to earth- rock mountain, the use of agricultural land in primitive society lays a future land- use pattern.