本文選題：土地利用 + 土地整治　； 參考：《農(nóng)業(yè)工程學(xué)報(bào)》2017年19期

【摘要】：為研究三峽庫區(qū)(重慶段)2005—2020年土地覆蓋和生物多樣性功能演化情況,對景觀格局進(jìn)行動態(tài)分析,該文結(jié)合重慶市生態(tài)保護(hù)紅線劃定成果,綜合運(yùn)用CA-Markov模型和In VEST模型對區(qū)域2005-2020年的土地覆蓋和生物多樣性功能的演化及趨勢進(jìn)行研究,在運(yùn)用CA-Markov模型對2020年土地覆蓋進(jìn)行模擬預(yù)測的基礎(chǔ)上,運(yùn)用In VEST模型進(jìn)行生物多樣性功能的定量計(jì)算。結(jié)果表明:1)2005—2010年和2010—2015年,各類土地覆蓋面積和土地覆蓋動態(tài)度分別呈現(xiàn)"四增二減"和"三增三減"的狀態(tài);2)CA-Markov模型模擬預(yù)測時(shí)Kappa系數(shù)達(dá)到0.92,表明模型的普適性較好;3)4期生境退化指數(shù)最高值變化為:0.168 1→0.207 1→0.190 9→0.181 2,城區(qū)周邊和長江、嘉陵江、烏江沿岸區(qū)域的生境退化指數(shù)高,東北部大巴山區(qū)域的生境退化指數(shù)較低;4)大巴山、武陵山、四面山等區(qū)域的生境質(zhì)量較好,長江、嘉陵江沿岸生物多樣性功能較差,4期生境質(zhì)量總得分和平均得分分別為34 337 710、36 829 020、36 345 590、35 530 500和0.513 9、0.551 2、0.543 9、0.531 7;5)15年間生物多樣性功能出現(xiàn)不斷上升的趨勢,由大范圍的波動轉(zhuǎn)為小區(qū)域變化,整個(gè)區(qū)域的生物多樣性功能逐漸趨于穩(wěn)定。
[Abstract]:In order to study the evolution of land cover and biodiversity in the Three Gorges Reservoir Area (Chongqing section) from 2005 to 2020, the dynamic analysis of landscape pattern was carried out. This paper combined with the red line of Chongqing ecological protection, and comprehensively applied the CA-Markov model and the In VEST model to the evolution and evolution of the land cover and biodiversity function of the region for 2005-2020 years. On the basis of the simulated prediction of land cover in 2020 by using the CA-Markov model, the In VEST model is applied to the quantitative calculation of biodiversity function. The results show that 1) 2005 - 2010 and 2010 - 2015, all kinds of land cover area and land cover dynamic attitude show "four two minus" and "three three minus". State; 2) the Kappa coefficient of the CA-Markov model is 0.92, indicating that the model is universally suitable; 3) the highest value changes of the habitat degradation index in the 4 period are 0.1681, 0.2071, 0.1909 to 0.1812, and the habitat degradation index in the surrounding area of the city and the Yangtze River, the Jialing River and the Wujiang coastal region is high, and the habitat degradation index of the Dabashan area in the northeast is low; 4) The habitats of dababan, Wuling Mountain and simian mountain are of good quality, and the biological diversity of the Yangtze River and the Jialing River is poor. The total score and average score of the 4 stage habitat quality are 34337 710,36 829 020,36 345 590,35 530500 and 0.513 9,0.551 2,0.543 9,0.531 7; 5) the trend of biodiversity function rising continuously during the 15 years. The large scale fluctuation has changed to the small area, and the biodiversity function of the whole region has gradually stabilized.
【作者單位】： 吉林師范大學(xué)旅游與地理科學(xué)學(xué)院;重慶市環(huán)境科學(xué)研究院;
【基金】：吉林省科技發(fā)展計(jì)劃項(xiàng)目(20150204047SF)
【分類號】：P901;Q16

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