基于3S技术的兴安盟监测区荒漠化沙化现状分析
发布时间：2018-10-25 12:38
【摘要】：本文章在收集了大量兴安盟监测区资料基础上,通过运用高分辨率遥感影像数据判读与地面实地验证相结合的方法,获得兴安盟监测区荒漠化沙化土地面积,对兴安盟监测区荒漠化沙化状况进行评价,从而掌握兴安盟监测区土地荒漠化沙化的现状,将本期得到的该监测区荒漠化沙化数据与2009年第四次荒漠化沙化监测数据做对比,获得该地区荒漠化沙化土地的面积、荒漠化沙化类型以及程度的动态变化情况。结合当地的自然地理因素和社会经济因素,揭示兴安盟监测区土地沙化荒漠化的成因,从而预测荒漠化土地今后的发展变化趋势,并提出当地的防治荒漠化沙化的建议。通过本次调查研究,得出结论有:(1)兴安盟荒漠化监测区面积共计409765.22 hm2,其中荒漠化土地面积为271654.44 hm2,占荒漠化监测总面积的66.30%,整个监测区荒漠化只分布风蚀和盐渍化两种类型,以风蚀为主,面积是213344.32hm2,占监测总面积的78.54%,盐渍化土地分布较少,面积是58310.12hm2,占监测总面积的21.46%。非荒漠化土地共计138110.78hm2,占荒漠化监测总土地面积的33.70%。(2)兴安盟沙化监测区共计1772111.04hm2,经调查沙化土地共410635.12hm2,占监测区总面积的23.17%。有明显沙化趋势的土地是非沙化土地和沙化土地之间的一种预警地,共计162865.36hm2,占监测区总面积的9.19%,非沙化土地总共1198610.56hm2,占监测区总面积的66.45%。(3)通过与2009年兴安盟监测区土地荒漠化沙化数据对比分析,从2009年到2014年,荒漠化土地面积由252637.46hm2,增长到271654.44hm2,监测区荒漠化土地由上次占总土地面积的61.650%增长到本次66.30%。5年内增长19016.98hm2,年均增加3803.40hm2,年增率0.02%。总体来看,该监测区荒漠化土地面积总体呈现增长趋势,但土地土地荒漠化扩展的态势有所减缓。(4)本次监测兴安盟监测区沙化土地共计410638.81hm2,与上期相比,5年间少化土地减少1735.89hm2,年均减少347.18hm2,逆转速率为0.08%。
[Abstract]:On the basis of collecting a large amount of data of XingUNITA monitoring area, the desertification land area in XingUNITA monitoring area is obtained by combining the interpretation of high-resolution remote sensing image data with the field verification on the ground. The status of desertification in the monitoring area of XingUNITA is evaluated, so as to grasp the present situation of desertification and desertification in the monitoring area of XingUNITA. The desertification data obtained in this period are compared with the fourth desertification monitoring data in 2009. The dynamic changes of desertification land area, desertification type and degree in this area were obtained. Combined with local natural geographical factors and social economic factors, this paper reveals the causes of desertification of land desertification in XingUNITA monitoring area, thus predicts the development and change trend of desertification land in the future, and puts forward some local suggestions for combating desertification. Through this investigation and study, the conclusions are as follows: (1) the total area of desertification monitoring area of XingUNITA is 409765.22 hm2,. The desertification land area of 271654.44 hm2, accounts for 66.30% of the total desertification monitoring area, and only wind erosion and salinization are distributed in the whole monitoring area. The area of wind erosion was 213344.32hm2, which accounted for 78.54 of the total area monitored. The salinized land was less distributed, with an area of 58310.12hm2, accounting for 21.46hm2 of the total area monitored. Non-desertification land amounts to 138110.78hm2, which accounts for 33.700.The desertification monitoring area of XingUNITA is 1772111.04hm2.The sandy land under investigation is 410635.12hm2, accounting for 23.1717% of the total area of the monitoring area. Land with a clear trend of desertification is an early warning ground between non-desertification land and desertified land, A total of 162865.36 hm2, accounting for 9.19 of the total area under monitoring, and a total of 1198610.56hm2 of non-desertified land and 66.45hm2 of the total area under monitoring. (3) through comparative analysis of desertification data from 2009 to 2014 in the XingUNITA Monitoring area, The desertification land area increased from 252637.46hm2to 271654.44hm2.The desertification land in the monitoring area increased from 61.650% of the total land area last time to 19016.98hm2in the current 66.30.5 year, with an average annual increase of 3803.40hm2with an annual increase rate of 0.02%. As a whole, the desertification land area of the monitoring area has shown an overall increasing trend. But the expansion of land desertification has slowed down. (4) the total desertification land in the monitoring area of XingUNITA is 410638.81hm2.Compared with the previous period, less land was reduced by 1735.89hm2, the annual decrease was 347.18hm2, and the reverse rate was 0.08cm ~ (2).
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X171
本文编号：2293716
[Abstract]:On the basis of collecting a large amount of data of XingUNITA monitoring area, the desertification land area in XingUNITA monitoring area is obtained by combining the interpretation of high-resolution remote sensing image data with the field verification on the ground. The status of desertification in the monitoring area of XingUNITA is evaluated, so as to grasp the present situation of desertification and desertification in the monitoring area of XingUNITA. The desertification data obtained in this period are compared with the fourth desertification monitoring data in 2009. The dynamic changes of desertification land area, desertification type and degree in this area were obtained. Combined with local natural geographical factors and social economic factors, this paper reveals the causes of desertification of land desertification in XingUNITA monitoring area, thus predicts the development and change trend of desertification land in the future, and puts forward some local suggestions for combating desertification. Through this investigation and study, the conclusions are as follows: (1) the total area of desertification monitoring area of XingUNITA is 409765.22 hm2,. The desertification land area of 271654.44 hm2, accounts for 66.30% of the total desertification monitoring area, and only wind erosion and salinization are distributed in the whole monitoring area. The area of wind erosion was 213344.32hm2, which accounted for 78.54 of the total area monitored. The salinized land was less distributed, with an area of 58310.12hm2, accounting for 21.46hm2 of the total area monitored. Non-desertification land amounts to 138110.78hm2, which accounts for 33.700.The desertification monitoring area of XingUNITA is 1772111.04hm2.The sandy land under investigation is 410635.12hm2, accounting for 23.1717% of the total area of the monitoring area. Land with a clear trend of desertification is an early warning ground between non-desertification land and desertified land, A total of 162865.36 hm2, accounting for 9.19 of the total area under monitoring, and a total of 1198610.56hm2 of non-desertified land and 66.45hm2 of the total area under monitoring. (3) through comparative analysis of desertification data from 2009 to 2014 in the XingUNITA Monitoring area, The desertification land area increased from 252637.46hm2to 271654.44hm2.The desertification land in the monitoring area increased from 61.650% of the total land area last time to 19016.98hm2in the current 66.30.5 year, with an average annual increase of 3803.40hm2with an annual increase rate of 0.02%. As a whole, the desertification land area of the monitoring area has shown an overall increasing trend. But the expansion of land desertification has slowed down. (4) the total desertification land in the monitoring area of XingUNITA is 410638.81hm2.Compared with the previous period, less land was reduced by 1735.89hm2, the annual decrease was 347.18hm2, and the reverse rate was 0.08cm ~ (2).
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X171
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