CAJ | 학술논문

基于径流小区定位观测研究,分别研究紫色土丘陵区坡耕地不同耕作模式（横垄、顺垄、混合耕作）和不同土层（0～15 cm、15～30 cm）对土壤径流冲刷过程中径流含沙量及抗冲指数的变化特征的影响,以及影响因素的内在关系。研究结果表明：（1）在整个冲刷过程中,不同土层土壤表面径流泥沙流失量呈递减趋势,最后基本趋于稳定;（2）在整个冲刷过程中,径流泥沙流失量总体表现为0～15 cm土层〉15～30 cm土层,这主要与土壤剖面特性有关,而农业耕作和根系的影响占次要地位;（3）在各种耕作模式中,抗冲指数的大小均表现为0～15 cm土层〈15～30 cm土层,且后者分别是前者的2～3倍。
기우경류소구정위관측연구,분별연구자색토구릉구파경지불동경작모식（횡롱、순롱、혼합경작）화불동토층（0～15 cm、15～30 cm）대토양경류충쇄과정중경류함사량급항충지수적변화특정적영향,이급영향인소적내재관계。연구결과표명：（1）재정개충쇄과정중,불동토층토양표면경류니사류실량정체감추세,최후기본추우은정;（2）재정개충쇄과정중,경류니사류실량총체표현위0～15 cm토층〉15～30 cm토층,저주요여토양부면특성유관,이농업경작화근계적영향점차요지위;（3）재각충경작모식중,항충지수적대소균표현위0～15 cm토층〈15～30 cm토층,차후자분별시전자적2～3배。
Based on located observation on runoff plots,effects of tillage patterns（transverse ridge,downslope ridge mixed tillage） different soil layers（0-15 cm 15-30 cm） on variation of sediment yield of runoff soil erosion resistance and the correlations among these factors were examined.Result shows that：（1）sediment yield of surface runoff decrease over the scouring process,and finally approximate a constant;（2） sediment yield runoff in 0-15 cm layer is larger than that in 15-30 cm layer,which is probably related to the different soil properties for different soil layers;（3） for all tillage patterns,the order of the soil erosion resistance is 0-15 cm layer15-30 cm layer,and the latter are 2-3 times as large as the former.