摘要
利用遥感定量测量,采用Landsat-5的NDVI数据和TM数据及其他辅助数据,结合生态学方法,对长江三角洲地区的4个省市1995年和2005年的生态资产进行了测量,并对生态资产分布格局及其驱动因素进行了分析。结果表明:该地区的生态资产分布不均衡,表现为由南向北逐渐递减的趋势。1995—2005年,生态资产减少量达1 273.35亿元,减少率达23.37%。从生态资产构成来说,湿地和水体的生态资产减少的幅度最大,分别为58.42%和41.78%;耕地、灌丛和林地的减少量也在20%左右。长三角地区生态资产发生变化既是自然因素作用的结果,也是人为活动直接作用的结果。在这一地区城市化不断扩大的情况下,应大力提倡生态环境的保护,构建人与自然的和谐发展。
Annual survey of ecological assets in 1995 and 2005 of 4 provinces located in the Yangtze River Del ta region was selected, and their ecological asset distribution patterns and its driving factors were analyzed through the methods of the remote sensing quantitative measurement, NDVI data Landsat-5 and TM data, other secondary data, combining with the ecological methods. The results showed that the ecological capital of the Yangtze River Delta region was unevenly distributed gradually decreased from the south to the north. The ecological assets amounting capital of Yangtze River region reduced to 1. 273 × 1011 Yuan in decade, which decreased by 23.37%. From the ecological asset composition, reduction magnitudes of wetland and water ecological asset were maximum, which were 58.42% and 41.78%, respectively; reduction volume of arable land, shrubland and woodland was about 20%. Yangtze River Delta ecological changes in assets were the result of natural factors, and also a direct result of human activities; with the development of economy and city enlargement situation, we should vigorously advocate the protection of the ecological environment, and construct the harmonious development of human and nature.
出处
《水土保持研究》
CSCD
北大核心
2013年第1期182-185,192,共5页
Research of Soil and Water Conservation
基金
国家科技支撑计划课题(2008BAC44B03)
国际科技合作计划项目(2009DFA91710、2010DFA22770)
吉林省自然科学基金项目(201215224)
四平市社会科学基金项目(201118)
关键词
长江三角洲
生态资产
空间格局
驱动力
Yangtze River Delta ecological capital
spatial pattern
driving force
