本文選題：庫布齊沙地 + 3S技術(shù)��； 參考：《內(nèi)蒙古大學(xué)》2017年碩士論文

【摘要】：庫布齊沙地地處鄂爾多斯高原,毗鄰黃河,具有獨(dú)特的水熱條件,且沙地中存在諸多河流亦是黃河重要的補(bǔ)給水源。本文基于3S技術(shù)和野外實(shí)地植被調(diào)查,對庫布齊沙地1979年、1992年、2002年和2013年四期遙感影像進(jìn)行人工目視解譯,解譯精度為90.38%,據(jù)此,通過空間分析,研究35年間庫布齊沙地景觀空間分布格局和沙地中濕地的動態(tài)變化,以期為庫布齊沙地的治理提供理論依據(jù)和基礎(chǔ)資料。研究結(jié)果表明:(1)1979年～2013年,庫布齊沙地濕地面積減少1244.5km2,降幅為34.29%。固定沙地和裸沙地的面積減少量分別為304.95km2和1021.11km2,半固定沙地、人工植被和城建用地的面積增加量分別為901.89km2、1413.69km2和159.17km2。(2)35年間,湖泊和庫塘減少的速度最快,動態(tài)度為-1.56%,城建用地增加的速度最快,動態(tài)度為72.92%。(3)從景觀類型轉(zhuǎn)化來看,濕草甸、沼澤、湖泊和庫塘、河流、裸沙地是主要轉(zhuǎn)出類型,固定沙地、半固定沙地、人工植被、城建用地是主要轉(zhuǎn)入類型。(4)庫布齊沙地中濕地主要為鹽化草甸、濕草甸和河流,多分布在研究區(qū)北部,1979年濕地呈現(xiàn)大斑塊分布;2013年,濕地面積減少,且呈小斑塊離散分布,水體和濕草甸破碎化嚴(yán)重。(5)根據(jù)空間分析的結(jié)果可知,到2013年,庫布齊沙地北部由外到內(nèi)逐漸形成了濕草甸、固定沙地、人工植被、半固定沙地、裸沙地的分布現(xiàn)狀。
[Abstract]:Kubuqi sandy land is located in the Ordos Plateau, adjacent to the Yellow River, with unique water and heat conditions, and there are many rivers in the sandy land are also an important source of water supply for the Yellow River.Based on the 3s technique and field vegetation survey, this paper makes artificial visual interpretation of four remote sensing images of Kubuqi sandy land in 1979, 1992, 2002 and 2013. The interpretation accuracy is 90.38. Based on this, the spatial analysis is carried out.The spatial distribution pattern of landscape and the dynamic changes of wetlands in the sandy land of Kubuqi during the past 35 years were studied in order to provide theoretical basis and basic data for the management of the sandy land in Kubuqi.The results show that from 1979 to 2013, the wetland area of Kubuqi sandy land decreased by 1244.5km2, the decrease was 34.29km2.The area reduction of fixed sandy land and bare sandy land were 304.95km2 and 1021.11km2, respectively. The increase of land area of artificial vegetation and urban construction land was 901.89km21413.69km2 and 1021.11km2, respectively. During the period of 159.17km2.(2)35, lakes and ponds decreased most rapidly.The dynamic degree is -1.56, the rate of increase of urban construction land is the fastest, and the dynamic degree is 72.92. According to the transformation of landscape types, wet meadow, swamps, lakes and reservoirs, rivers, bare sandy land are the main types of transfer, fixed sandy land, semi-fixed sandy land, artificial vegetation,The wetland in Kubuqi sandy land is mainly salinized meadow, wet meadow and river, mostly distributed in the northern part of the study area. In 1979, the wetland showed a large patch distribution; in 2013, the wetland area decreased, and the small patch dispersed distribution.According to the results of spatial analysis, by 2013, the distribution of wet meadow, fixed sandy land, artificial vegetation, semi-fixed sandy land and bare sandy land had gradually formed in the northern part of Kubuqi sandy land from outside to inside.
【學(xué)位授予單位】：內(nèi)蒙古大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X37;P901

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭彩，

本文編號：1753165