本文關(guān)鍵詞：1998—2014年阿克蘇河流域耕地景觀時(shí)空變化研究　出處：《西南林業(yè)大學(xué)學(xué)報(bào)(自然科學(xué))》2017年02期 　論文類型：期刊論文

  更多相關(guān)文章： 耕地 景觀格局 時(shí)空變化 驅(qū)動(dòng)力分析 阿克蘇河流域

【摘要】：以新疆阿克蘇河流域?yàn)檠芯繉?duì)象,利用遙感和GIS解譯了研究區(qū)1998年、2002年、2006年、2010年、2014年5個(gè)時(shí)相的Landsat TM/ETM/OLI遙感影像數(shù)據(jù)。針對(duì)耕地信息,分別從耕地面積動(dòng)態(tài)變化、耕地重心空間遷移、耕地景觀格局變化等分析阿克蘇河流域耕地近16年的變化過(guò)程,并從人口增長(zhǎng)、社會(huì)經(jīng)濟(jì)增長(zhǎng)、水利設(shè)施建設(shè)等方面分析這些因素對(duì)該流域耕地變化的影響。結(jié)果表明:整個(gè)流域耕地面積持續(xù)增加,上、中、下游耕地面積增加幅度有所不同,下游耕地面積增幅最大,上游次之,中游最小;流域上、中、下游耕地重心坐標(biāo)在不同時(shí)段內(nèi)分別向不同方向遷移,但總體表現(xiàn)為上游向東遷移,中游向南遷移,下游向北遷移;流域內(nèi)耕地間逐漸聚攏,空間上接連成片,斑塊面積不斷增大,景觀異質(zhì)性降低;阿克蘇地區(qū)人口和社會(huì)經(jīng)濟(jì)的持續(xù)增長(zhǎng)是流域耕地面積持續(xù)擴(kuò)張的重要原因,水利設(shè)施的配套建設(shè)保證了不斷增加的耕地的用水灌溉。
[Abstract]:Taking the Aksu River Basin in Xinjiang as the research object, remote sensing and GIS were used to interpret the study area on 1998, 2002, 2006 and 2006. Landsat TM/ETM/OLI remote sensing image data of five phases in 2014. According to the information of cultivated land, the dynamic change of cultivated land area and the spatial migration of cultivated land center of gravity were carried out respectively. The change of cultivated land landscape pattern in Aksu River basin is analyzed in the last 16 years, and from the population growth, social and economic growth. The effects of these factors on the cultivated land changes in the basin are analyzed in the construction of water conservancy facilities. The results show that the cultivated land area of the whole basin continues to increase, while the increase range of the upper, middle and lower reaches of the cultivated land area is different. The increase of cultivated land area in the lower reaches is the largest, followed by the upper reaches and the middle reaches. The barycentric coordinates of cultivated land in the middle and lower reaches of the river basin migrate in different directions in different periods, but the overall characteristics are that the upper reaches migrate eastward, the middle reaches move south, and the lower reaches migrate northward. The cultivated land in the watershed gradually converges, and the patch area increases continuously, and the landscape heterogeneity decreases. The continuous growth of population and social economy in Aksu area is an important reason for the continuous expansion of cultivated land in the basin. The construction of water conservancy facilities ensures the continuous increase of water irrigation of cultivated land.
【作者單位】： 西南林業(yè)大學(xué)林學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(31460195,31660236)資助
【分類號(hào)】：F323.211;P901
【正文快照】： 土地利用/覆被變化一直以來(lái)都是國(guó)內(nèi)外研究的熱點(diǎn)問(wèn)題[1-4],耕地作為農(nóng)業(yè)活動(dòng)的載體是土地利用研究的重點(diǎn)內(nèi)容之一[5-6]。隨著人口的不斷增加、農(nóng)業(yè)現(xiàn)代化的推進(jìn),人類改變自然的能力增強(qiáng),耕地面積開始大幅度增加,對(duì)土地的開發(fā)和利用強(qiáng)度也愈發(fā)劇烈。在西部干旱區(qū),綠洲既作為人

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本文編號(hào)：1363420