【摘要】：在對(duì)延安市生態(tài)退耕特征分析的基礎(chǔ)上,闡釋了其對(duì)生態(tài)系統(tǒng)服務(wù)功能的影響,并借助STIRPAT模型探究了生態(tài)退耕過程中耕地面積變化與其人文驅(qū)動(dòng)因素的定量關(guān)系。研究表明:2000—2013年延安市以耕地、林地、草地為主要景觀類型,而耕地面積大幅度減少,林地、草地面積穩(wěn)步增加,且耕地主要轉(zhuǎn)化為林地、草地,分別占其轉(zhuǎn)出量的28.627%,66.664%;延安市2000—2013年生態(tài)服務(wù)價(jià)值穩(wěn)步增加,增長(zhǎng)率為7.624%,年均增長(zhǎng)量為1.416億元,而耕地、草地、林地生態(tài)系統(tǒng)服務(wù)價(jià)值貢獻(xiàn)率依次遞增,建設(shè)用地比重逐漸增大,水域及荒漠則波動(dòng)變化,且單項(xiàng)生態(tài)系統(tǒng)服務(wù)功能值變異系數(shù)逐漸降低,各項(xiàng)生態(tài)服務(wù)功能呈現(xiàn)均衡化發(fā)展趨勢(shì);人口數(shù)量增加、社會(huì)經(jīng)濟(jì)增長(zhǎng)、產(chǎn)業(yè)結(jié)構(gòu)調(diào)整對(duì)耕地面積減少具有積極作用,而非農(nóng)業(yè)人口數(shù)量增加及農(nóng)村經(jīng)濟(jì)水平提升能夠促進(jìn)耕地面積的增加,各驅(qū)動(dòng)因素綜合影響著耕地面積變化及生態(tài)退耕過程與生態(tài)系統(tǒng)結(jié)構(gòu),并對(duì)區(qū)域生態(tài)系統(tǒng)服務(wù)功能影響顯著。
[Abstract]:Based on the analysis of the characteristics of ecological conversion of cropland in Yan'an City, this paper explains its influence on the service function of ecosystem, and probes into the quantitative relationship between the change of cultivated land area and its human driving factors in the process of ecological conversion of cropland with the help of STIRPAT model. The results showed that cultivated land, forest land and grassland were the main landscape types in Yan'an City from 2000 to 2013, while the area of cultivated land decreased greatly, the area of forest land and grassland increased steadily, and the cultivated land was mainly transformed into forest land and grassland. It accounted for 28.627% and 66.664% of the total, respectively. From 2000 to 2013, the value of ecological service in Yan'an City increased steadily, with a growth rate of 7.624% and an average annual growth rate of 141.6 million yuan, while the contribution rate of ecosystem service value of cultivated land, grassland and forest land increased in turn, and the proportion of construction land increased gradually. The water area and desert fluctuate, and the coefficient of variation of the service function value of the single ecosystem decreases gradually, and the ecological service function shows the trend of balanced development. The increase of population, social and economic growth and the adjustment of industrial structure play a positive role in the decrease of cultivated land area, while the increase of non-agricultural population and the improvement of rural economic level can promote the increase of cultivated land area. The driving factors affect the change of cultivated land area, the process of ecological conversion of farmland and the structure of ecosystem, and have a significant impact on the service function of regional ecosystem.
【作者單位】： 東北農(nóng)業(yè)大學(xué)資源與環(huán)境學(xué)院;中國科學(xué)院地理科學(xué)與資源研究所;
【基金】：國家“十二五”科技支撐計(jì)劃項(xiàng)目“空心村快速調(diào)查識(shí)別與整治關(guān)鍵技術(shù)研究”(2014BAL01B01)
【分類號(hào)】：S181
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本文編號(hào)：2488067