摘要
In this paper,the characters of soil aggregates under different skidding modes were investigated by fractal theory.The results showed that the particle fraction of soil aggregates was smaller under tractor- than under animal traction skidding.As for different parts of skidding road,the particle fraction of air-dried soil aggregates was in the order of bottom (2.309) > middle (2.291) > upper (2.014),while that of water-stable aggregates followed the sequence of bottom (2.04) < middle (2.143) < upper (2.262).The particle fraction of aggregates was 2.215 in forest soil and 2.175 in skidding roads.Skidding movement could improve soil aggregates when the cutting intensity was 15%.Tractor skidding was more favorable for soil aggregates formation.
In this paper, the characters of soil aggregates under different skidding modes were investigated by fractal theory. The results showed that the particle fraction of soil aggregates was smaller under tractor-than under animal traction skidding. As for different parts of skidding road, the particle fraction of air-dried soil aggregates was in the order of bottom （2.309） 〉 middle （2.291） 〉 upper （2.014）, while that of water-stable aggregates followed the sequence of bottom （2.04） 〈 middle （2. 143） 〈 upper （2.262）. The particle fraction of aggregates was 2. 215 in forest soil and 2.175 in skidding roads. Skidding movement could improve soil aggregates when the cutting intensity was 15 %. Tractor skidding was more favorable for soil aggregates formation.
出处
《应用生态学报》
CAS
CSCD
北大核心
2005年第9期1795-1797,共3页
Chinese Journal of Applied Ecology
基金
国家"十五"科技攻关项目(2001BA510B0704)
教育部高校青年教师奖励计划资助项目(2000103).
