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介绍了监测土壤流失和堆积的一种新方法——标线法和在贵州普定喀斯特坡地开展试验研究测定犁耕侵蚀的结果。坡度3°、坡长24.2 m的石灰土旱坡地10次犁耕的试验结果表明:坡顶犁耕侵蚀速率0.67 cm/a,和实际情况相符;顺坡犁耕通量52.6 kg/(m.a),和其他研究者用小石子或137Cs、210Pbex核素示踪法测得的值基本一致。标线法具有简便易行、价值低廉和标线隐蔽性强、不易被发现破坏的特点,所测结果是可靠的。此法解决了侵蚀针或标桩法可能干扰径流和风流场的问题,且不妨碍犁耕,可广泛应用于流水侵蚀、风蚀和犁耕侵蚀的长期监测。标线法测得的是土壤点侵蚀和堆积量值,非常适用于侵蚀随坡长变化的研究。
Introduced a new method to monitor soil erosion and accumulation - the standard method and the result of plowing test carried out in Pulau Karst Slope in Guizhou Province. The results showed that the plow erosion rate was 0.67 cm / a on the slope top, which accorded with the actual situation; the plowing flux on the slope was 52.6 kg / (ma) , And other researchers with pebbles or 137Cs, 210Pbex nuclide tracer measured values ?? are basically the same. Marking method has the characteristics of simple and easy, low value and reticle concealment, not easy to be found damaged, the measured results are reliable. The method solves the problem that the erosion needle or the staking pile method may interfere with the runoff and the wind flow field, and does not hinder the plowing. The method can be widely applied to the long-term monitoring of water erosion, wind erosion and plowing erosion. Marked line method is measured soil erosion and accumulation of values, is very suitable for erosion with the change of slope length of the study.