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生态学杂志 ›› 2010, Vol. 29 ›› Issue (09): 1799-1805.

• 研究报告 • 上一篇    下一篇

沿海中小城市快速城市化过程中土地利用变化——以慈溪市为例

孟宪磊1,李俊祥1,2**,李铖1,李蓉1,沈兴华1,陈方敏1   

  1. 1华东师范大学环境科学系| 上海 200062;2上海市城市化生态过程与生态恢复重点实验室| 上海 200062
  • 出版日期:2010-09-08 发布日期:2010-09-08

Land use change of rapidly urbanized small- and medium-sized coastal cities in China: Taking Cixi City of Zhejiang Province as an example.

MENG Xian-lei1, LI Jun-xiang1,2, LI Cheng1, LI Rong1, SHEN Xing-hua1, CHEN Fang-min1   

  1. 1Department of Environmental Science, East China Normal University, Shanghai 200062, China|2Shanghai Key Laboratory of Urbanization and Ecological Restoration, Shanghai 200062, China
  • Online:2010-09-08 Published:2010-09-08

摘要: 中小城市对城市化的贡献同等甚至超过大城市,但中小城市的城市化对土地利用的影响却未引起足够的重视。本文以浙江省慈溪市为例,利用Landsat-TM/ETM和中巴资源卫星(CBERS)影像分析了慈溪1997—2007年快速城市化阶段土地利用变化,并用马尔科夫模型对2010—2020年的土地利用做初步预测。结果表明:慈溪的城市化导致城镇用地增加,农田和自然景观减少,马尔科夫模型预测显示这种状况还将继续;随着城市化加速,自然土地利用类型处于高度动态之中,沿海滩涂的围垦导致慈溪国土总面积在不断增加以满足城市化用地需求;政府决策及其鼓励下的加速工业化、城镇和农村建设城市化、农业发展市场化是慈溪市城市化过程中土地利用快速转化的主要驱动因素。

关键词: 小麦, 籽粒品质, 蛋白质组分, 基因型, 环境

Abstract: Small- and medium-sized cities contribute equally and even more to the world urbanization than large and mega-cities, but the impacts of their urbanization on land use change have been less studied. Taking Cixi, a small coastal city of Zhejiang Province, as a case, this paper studied the land use change during its rapid urbanization from 1997 to 2007, based on the land use datasets derived from Landsat-TM/ETM images and CBERS image. A Markov model was also employed to predict the land use change of Cixi from 2010 to 2020. Our findings demonstrated that the urbanization of Cixi increased the urban industrial and residential lands, and decreased its cropland and natural landscapes (e.g., wetland). Such status would be continued, according to the prediction of Markov model. The rapid urbanization made the natural land use types in highly dynamic. The reclamation of coastal tidal flats, especially wetland, induced the increasing total area of Cixi to meet the continuous land demand of urbanization. Local government
’s policies, together with the encouraged accelerated industrialization and urbanization of towns and counties, as well as the market-oriented agricultural development, were the driving forces of the rapid land use change.

Key words: Wheat, Grain quality, Protein components, Genotype, Environment