论文部分内容阅读
利用在子午岭林区布设的林地开垦后全梁坡、全沟坡（不接收上万来水）和全坡面径流小区，研究了子午岭林区林地开垦后坡沟侵蚀产沙关系。结果表明，子午岭林区林地开垦后，沟坟接收上方来水来沙的侵蚀产沙量是沟坡不接收上方米水来沙侵蚀产沙量的１．９５～３．９倍；全坡面侵蚀产沙在梁坡来水来沙的影响下，侵蚀产沙量增加１０％～３５％；沟坡侵蚀产沙量占总侵蚀产沙量的５３％左右，但其中有２０％的侵蚀产沙量是由于粱坡坡面径流下沟造成的，故受人类活动强烈影响的梁坡，实质上造成了６８％左右的侵蚀产沙量。
The relationship between soil erosion and sediment after slope land reclamation in Ziwuling area was studied by using full slope, full slope (not receiving tens of thousands of incoming water) and full slope runoff plots after forest land reclamation in Ziwuling area. The results showed that, after reclamation of the forest land in Ziwuling forest area, the erosion and sediment yield of sand and gravel receiving water and sand above the waterway was 1.95 ~ Erosion and Sediment Yield Erosion and sediment yield increased by 10% -35% under the influence of incoming and outgoing water from the slope. The erosion and sediment yield of the slope slope was about 53% of the total erosion and sediment yield, but 20% of the erosion The amount of sediment produced is due to runoff ditches on the slopes of slope slopes, so the slopes that are strongly influenced by human activities have caused about 68% of the total erosion and sediment yield.