Impact of Different Governance Measures on Soil Erosion of Tea Garden in Anxi County
In order to explore the impact of different control measures on soil erosion in tea gardens in the red soil region of South China,it was studied the runoff and sediment characteristics of engineering measures and engineering+plant measures based on continuous data from the Guanqiao slope runoff observation field in Anxi County for 10 years.The results showed that the months with the highest monthly runoff depth in the three measure areas occurred from June to September.The order of the average annual runoff depth in the three measure areas was no treatment(454.9mm)＞terrace clearing(108.0mm)＞terrace planting of Paspalum notatum Flugge(93.0mm).The order of the average annual soil loss was no treatment(218.1t/hm2)＞terrace clearing(10.4t/hm2)＞terrace planting of Paspalum notatum Flugge(1.4t/hm2).The effect of controlling soil and water flow by terrace planting of Paspalum notatum Flugge was better than that of no treatment and terrace clearing.The correlation analysis results show that there is a highly significant positive correlation between runoff depth and rainfall,I30,and rainfall erosivity in different control measures areas.However,the correlation between soil erosion and rainfall,average rainfall intensity,I30,and rainfall erosivity in terrace planted with Paspalum notatum Flugge did not reach a significant level.
soil and water conservation measuressoil erosionrunoff depthtea gardenred soil
万方数据
维普
