摘要
本文在室内人工模拟降雨条件下,通过不同耕作措施人为造成不同地表的方法,从地表糙度方面定量化地研究了耕作措施对侵蚀产流的影响。结果表明:增加地表糙度,可减小径流量,进而减小侵蚀,并建立了相应的数学表达式。这为进一步完善侵蚀测报模型奠定了一定的基础,同时也为黄土高原坡耕地水土流失的治理和退耕还林(草)的实施,提供了一定的理论依据。
With indoor artificial rainfalls, effects of cultivation measures on runoff were determined from lands with surface different in roughness as a result of different cultivation measures. The results showed that runoff decreased with the increase in surface roughness, thus leading to reduced erosion. Based on the results, a calculation equation was established accordingly, providing a useful tool for further consummating the model for predicting soil erosion and a theory basis as well for harnessing soil and water loess and restoring forests and grasslands on unsuitable farmland in the Loess Plateau.
出处
《土壤》
CAS
CSCD
北大核心
2004年第3期327-330,共4页
Soils
基金
中国科学院"知识创新"工程项目"农果复合型生态农业模式建设与示范"(KZCX1-06-02-03 (2001 ~ 2004))。
关键词
耕作措施
糙度
径流量
Cultivation measures, Roughness, Runoff
