摘要
:1 999年 5～ 9月在锡盟东乌旗贺斯格乌拉牧场进行了草原植被不同利用强度对水土流失影响的研究。试验表明 ,草原植被的利用强度与水土流失密切相关。例如 8月 2 1日的降雨量为 2 3 8mm ,对照区的清水径流量为 1 92 5 93m3/km2 ,土壤侵蚀量为 4 92t/km2 ;轻度利用区分别为 30 1 4 1 0m3/km2 和 6 0t/km2 ;中度利用区分别为 3864 77m3/km2 和 8 1 2t/km2 ;重度利用区分别为 470 9 34m3/km2 和 1 3 0 4t/km2 。除植被因素外 ,降雨强度。
The influence of utilization of grassland vegetation on water and soil losses was studied in the Hesigewula Ranch,Dongwu Banner,Xilinguole League,Inner Mongolia from May to September 1999.The results showed that the utilization intensity of grassland vegetation was related with water erosion.Precipitation was 23.8mm on 21 August,and runoff averaged 1925.93m 3/km 2,soil loss was 4.92t/km 2 in control plot,runoff and soil loss were 3010.10m 3/km 2 and 6.0t/km 2 in light utilization plot,3864.77m 3/km 2 and 8.12t/km 2 in moderate utilization plot,4709.34m 3/km 2 and 13.04t/km 2,respectively.In addition to vegetation condition,water erosion was also affected by precipitation,rainfall intensity and slope.
出处
《内蒙古草业》
2000年第2期1-7,共7页
Inner Mongolia Prataculture
基金
国家自然科学基金资助项目 !(批准号 3 9860 0 62 )
关键词
草原植被
利用强度
水土流失
grassland vegetation,utilization intensity,water erosion
