本文選題：耕地分布　切入點(diǎn)：旱地　出處：《干旱區(qū)資源與環(huán)境》2017年12期

【摘要】：耕地是農(nóng)業(yè)發(fā)展的重要物質(zhì)基礎(chǔ),科學(xué)判定耕地分布變化特征,對(duì)促進(jìn)耕地保護(hù)及優(yōu)化布局等方面具有重要意義。文中以1950、1960和1976年MSS影像、1986和1996年Landsat TM影像、2005年為中巴地球資源衛(wèi)星二號(hào)星遙感數(shù)據(jù)和2013年Land Sat8 OLI遙感影像為數(shù)據(jù)源,運(yùn)用耕地利用動(dòng)態(tài)度、核密度計(jì)算等研究方法,對(duì)1950-2013年三江平原東北部耕地分布變化特征及驅(qū)動(dòng)因素進(jìn)行分析。結(jié)果表明:1950-1986年耕地增加由19.62×10~4hm~2增加至145.85×10~4hm~2,新增耕地主要源于未利用地、草地和林地,耕地轉(zhuǎn)化為其他地類的數(shù)量為3.07×10~4hm~2;1986年-2013年耕地增加了93.04×10~4hm~2,有71.70×10~4hm~2旱地轉(zhuǎn)換為水田,同時(shí)8.25×10~4hm~2水田轉(zhuǎn)換為旱地;63年間,耕地分布密度值顯著增加,水田分布密度最大值高于旱地。據(jù)此,加強(qiáng)水土資源優(yōu)化配置,通過土地整治增加有效耕地面積是三江平原東北部未來發(fā)展的必由之路。
[Abstract]:Cultivated land is an important material basis for agricultural development. It is of great significance to promote the protection of cultivated land and to optimize the layout of cultivated land. In this paper, the Landsat TM images of 1950, 1960 and 1976, Landsat TM images of 1986 and 1996, and Land Sat8 OLI remote sensing data of China and Brazil Earth Resources Satellite 2 in 2005 and 2013, respectively, are used as data sources. Using research methods such as cultivated land use dynamics, calculation of nuclear density, The characteristics and driving factors of cultivated land distribution in northeast Sanjiang Plain from 1950 to 2013 were analyzed. The results showed that the cultivated land increased from 19.62 脳 10~4hm~2 to 145.85 脳 104hmm-2 in 1950-1986, and the new cultivated land was mainly derived from unused land, grassland and woodland. The number of cultivated land converted into other land species was 3.07 脳 10 ~ (4) h ~ (-2), and the cultivated land increased by 93.04 脳 10 ~ (4) h ~ (-2) from 1986 to 2013, and 71.70 脳 10~4hm~2 dry land was converted into paddy field. During the 63 years of transformation from 8.25 脳 10~4hm~2 paddy field to dry land, the density of cultivated land distribution increased significantly, and the maximum density of paddy field was higher than that of dry land. Strengthening the optimal allocation of soil and water resources and increasing the effective cultivated land area through land regulation is the only way for the future development of the northeast Sanjiang Plain.
【作者單位】： 東北農(nóng)業(yè)大學(xué)資源與環(huán)境學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41571167) 黑龍江省自然科學(xué)基金項(xiàng)目(D201401)資助
【分類號(hào)】：F323.211
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本文編號(hào)：1683660