Research on Farmland Field Ridge's Responses of Typical Terrace Zones during the Land Consolidation in Southwest Hilly of China

It is the important job for land consolidation to build the stable farmland field ridge in southwest hilly of China and in order to know their responses. Based on the stability of farmland field ridge,geographic features and different slopes, the southwest hilly was divided into five typical terrace zones and the farmland field ridge's response models of standard field and zone to their responses in the land consolidation were established. The results showed that there was positive correlation between the ridge height and net width with width of field. The maximum width is 50m, the least the sum of the lengths is 197.63m, the maximum new cultivated field is 0.99hm2. The ridge height should increase so that the width and new cultivated field could both enlarge when slope of zone increasing in the typical zone. And it is proved that the steeper the terrain is, the narrower the field width is; if the width becomes larger, the numbers of parcel and ridge and cultivated land will decrease, and then their responses are conspicuous in the typical zone of hilly.