Affect Analysis On Monitoring Treatment Of Degraded Grassland In Zaduo County, Qinghai Province

To further understand the impact factors,present situation and countermeasures of governance of alpine meadow degradation,a 5-continuous years grassland monitoring experiment were carried out on severe and moderate degraded grassland in Yushu,Zaduo County,Qinghai province since 2011.In mid-August each year,random sampling techniques were used to measure the stand height,biomass etc.,temperature and rainfall were recorded at the same time.Through comprehensive analysis,the results showed that:(1)From 2011 to 2013,dry weight of forage and weeds are Hei Tu tan governance<enclosure process <control,but 2014 and 2015,dry weight of forage and weeds are Hei Tutan governance <Control <enclosure processing.(2)From 2011 to 2013,The stand height was Hei Tu tan governance <enclosure process<control.In 2014 and 2015,the stand height height was Hei Tutan governance <Control<enclosure processing.The highest is 11.73 cm.(3)From 2011 to2015,Hei Tutan governance forage dry biomass and stand height increased year by year,and they achieved to the highest in 2014 and 2015 years,2014 and2015 years forage dry biomass and stand height were significantly higher than 2011 to 2013(P<0.05).(4)2011 to 2015 years enclosure processing forage dry biomass and stand height were increased continuously,and achieved to the highest in 2014.They were significantly higher than the first 3 years(P<0.05).(5)From 2011to2015 years,control treated forage dry biomass and stand height were the highest in 2011,and significantly higher than 2013 and 2015(P<0.05),and showed a slightly decreasing trend year by year,in addition 2014 increased.(6)Pasture plant biomass and average height under Hei Tutan governance and enclosure treatment increased gradually,the controls down slightly,in 2014 with a rapid increase under the annual average temperature and precipitation,forage dry biomass and plant height average also showed a rapidly increasing trend,but a sharp decline in the average annual temperature and precipitation in 2015,forage biomass also was affected.All in all,degradation of grassland after characteristics management and cultivating significantly improved after treatment effect,at the same time the temperature andprecipitation.also have certain influence to the grassland.