快速城镇化对杭州湾南岸慈溪市土地利用及生态系统服务价值的影响

doi:10.16843/j.sswc.2018.05.013

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摘要快速城镇化因大量城镇建设用地的形成而导致其他土地类型减少，并影响着区域生态系统服务价值，对其进行研究可为区域的可持续发展和政策决策提供信息。作者以位于杭州湾南岸的慈溪市为研究对象，利用2005、2010和2015年3期遥感数据，提取不同时期土地利用信息，分析慈溪市快速城镇化导致的土地利用变化及其引起的生态系统服务价值变化。结果表明：1）2005-2015，慈溪市的土地利用变化主要体现在滩地面积的大量减少、建设用地大幅增加，建设用地增幅来源主要是由滩地与旱地转变而来，快速城镇化使得其他土地的破碎程度增加；2）快速城镇化对该区域生态系统服务价值的影响显著，2005-2015慈溪市生态系统服务价值下降10.02亿元，其中快速城镇化影响占73%；3）围垦滩地造成的生态系统服务价值损失最大，损失量达4.6亿元，其次是建设过程中对水体的占用。

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	黄日鹏
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关键词 ：快速城镇化, 土地利用变化, 生态系统服务价值, 慈溪市

Abstract：[Background] Rapid urbanization has resulted in the reduction of other types of land due to the large number of urban construction sites, and has an impact on the value of regional ecosystem services. Relevant research may provide information for regional sustainable development and policy decision-making.[Methods] Taking Cixi county on the south shore of Hangzhou Bay in China as the study area, this work utilized 3 periods' (in the year of 2005, 2010,and 2015) remote sensing data and extracted the information of land use in the 3 periods to analyze the change of land use as well as the change of ecosystem services value (ESV) due to the rapid urbanization in Cixi county. ESV was calculated by the modified model from R. Costanza.[Results] 1) From 2005 to 2015, land use changes in Cixi county showed a large decrease in tidal flats, and its area decreased by nearly 40.4%. Most of the tidal flats were transformed into dry lands, and a few were converted into paddy fields. The increase in construction land was the most significant, with an average annual increase of 11.3 km². The expansion of construction land increased the fragmentation of other land types. 2) Among the various types of land use in Cixi county, the ESV of tidal flat was much higher than that of other land types. In 2005, the ESV of tidal flats accounted for 60.2% of the entire Cixi area. In the past 10 years, the ESV in Cixi County has continued to decline, reaching 10.02×10⁸Yuan. The main reason for this was the sharp drop in tidal flats. 3) Over the past 10 years, the ESV lost due to the expansion of construction land up to 7.30×10⁸ Yuan, accounting for 73% of the total ESV reduction, and the ESV loss from various land use types during 2005 to 2010 was higher than that of 2010-2015. Regarding the structure of ESV loss, the amount of lost ESV due to the conversion of tidal flats into construction land amounted to 4.60×10⁸ Yuan, accounting for 62.9%, followed by occupied water area, the loss ESV accounted for 23.6%, and the remaining land types had a relatively small impact on ESV.[Conclusions] Overall, there is a negative correlation between the urbanization level and the ESV in Cixi County. The expansion of construction land and the reduction of tidal flats affected by urbanization is the main reason for the ESV loss.

Key words： rapid urbanization change of land use ecosystem services value Cixi county

收稿日期: 2017-10-21

PACS:

X826

基金资助:国家自然科学基金"人工地貌建设对港湾海岸地貌景观演化的影响比较研究——以中国浙江象山港与美国佛罗里达坦帕湾为例，围垦影响下的象山港潮汐汊道潮盆系统沉积动力学研究"（41471004，41171073）；NSFC-浙江两化融合联合基金"基于多源/多时相异质影像集成的滨海湿地演化遥感监测技术与应用研究"（U1609203）；宁波市社科规划项目"海洋生态经济学学科体系构建研究"（G16-ZX19）。

通讯作者: 李加林(1973-),男,博士,教授,博士生导师。主要研究方向:海岸带环境与资源开发。E-mail:nbnj2001@163.com E-mail: nbnj2001@163.com

作者简介: 黄日鹏(1994-),男,硕士。主要研究方向:海岸带环境与生态。E-mail:hrp826170256@163.com

引用本文:

黄日鹏^1,2, 李加林^1,2, 段义斌³, 冯佰香^1,2, 何改丽^1,2. 快速城镇化对杭州湾南岸慈溪市土地利用及生态系统服务价值的影响[J]. 中国水土保持科学, 2018, 16(5): 105-113.
HUANG Ripeng, LI Jialin, DUAN Yibin, FENG Baixiang, HE Gaili. Effects of rapid urbanization on land use and ecosystem service value in Cixi county, the south shore of Hangzhou Bay. SSWC, 2018, 16(5): 105-113.

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http://journal12.magtechjournal.com/Jweb_stbc/CN/10.16843/j.sswc.2018.05.013 或 http://journal12.magtechjournal.com/Jweb_stbc/CN/Y2018/V16/I5/105

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