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Inner Mongolia Agricultural University (2017)

The Prevention Countermeasures of the Land Desertification and Dynamic Changes of Desertification in Hulun Buir

赵斌;

Titre : The Prevention Countermeasures of the Land Desertification and Dynamic Changes of Desertification in Hulun Buir

Auteur : 赵斌;

Grade : Master’s Theses 2017

Université : Inner Mongolia Agricultural University

Résumé
In this paper,on the basis of collecting a large number of data,mainly USES the high resolution remote sensing data interpretation(spot-5)measured survey methods of combining with the ground,for each type of desertification and desertification land area,on the basis of the combination of landscape,vegetation,soil and meteorological data in the study area,crop yields,engineering measures,such as multiple evaluation index,current situation of desertification in hulun buir city,according to a 2014 survey data and collecting,sorting and fourth survey data of desertification survey(2009)for data statistics,analysis and evaluation on the present status of desertification and desertification of land in the study area and the reason ;According to the result of two statistical analysis of dynamic change ;As a whole in the study area natural condition and social economic development planning,forestry ecological engineering,etc,together with the present situation of desertification and desertification of land in the study area to predict the trend of the potential,and put forward countermeasures and measures,the main research conclusions are as follows :(1)desertification types in the study area are mainly of two kinds of wind erosion and salinization.Wind erosion and desertification of land,the largest area of 31639.13 hm2,accounting for 91.33%of the total area of the desertification of land,land use types are mainly cultivated land,forest land,grassland and unused land.Salinization land area of 3002.15 hm2,accounting for 8.67%of the desertification land area.(2)the hulun buir city mild desertification land area of 32619.07 hm2,accounting for 94.16%of the desertification land area ;Moderate desertification land area of 1410.26 hm2,accounting for 4.07% ;Severe desertification land area of 522.94 hm2,only 1.51%,very severely desertification land area of 89.02 hm2,accounted for only 0.26%.Illustrate the desertification in the study area as a whole to a lesser degree,management difficulty is relatively small,but the area is larger.(3)dynamic research shows that the development of land desertification in the study area:from 2009 to 2009,all showed a trend of slow desertification area and degree.The hulunbuir city of desertification land area of 3464127.98 hm2 in 2009,was reduced to 3479112.57 hm2 in 2014,reduced the 14984.59 hectares.Desertification land area of total area of the monitoring area ratio from 89.97%89.97%to the last time,decreased by 0.39%,reduce 14984.59 hm2,desertification land area 5 years year fell 2996.92 hm2,annual rate of 0.09%.Changes of land area by land to the desertification of land desertification,desertification trend overall improvement in hulun buir city.(4)the research shows that the hulun buir city,desertification and climate,soil and other natural factors and human factors such as excessive reclamation herding has a lot to do.In recent five years,hulun buir city land desertification better overall trend is closely connected with national all kinds of ecological engineering construction

Mots clés : The hulunbuir city; Desertification; Waxing and waning; reason; prevention countermeasures;

Présentation (CNKI)

Page publiée le 14 février 2018