现代黄河三角洲湿地生态服务功能价值评估研究

Modern Yellow River Delta Wetland Ecosystem Service Function Value Assessment Study 1,3

确定了利用高分辨率影像对现代黄河三角洲湿地这种小尺度区域生态系统服务功能进行价值评估的技术体系,并在该体系的指导下,开展了现代黄河三角洲湿地生态服务功能价值评估的研究。首先获取了2004年和2009年现代黄河三角洲的湿地景观格局,并分析其动态变化。在此基础上,对2004年和2009年现代黄河三角洲湿地各种生态服务功能价值分别估算,并从价值构成和空间分布上对其进行了分析,分析得出物质生产功能和营养物质循环功能是研究区主要生态服务功能,其价值分别占总价值的25.22%和22.57%;而从空间上来看,整个研究区湿地生态系统服务功能价值总体的分布趋势是从内陆到浅海方向逐渐增大,芦苇-沼泽草甸湿地分布区的生态服务功能价值总体上高于其他区域。基于以上分析结果,进一步分析研究区生态服务功能价值的变化情况,得出从2004年～2009年总价值由100.30亿元减少到96.59亿元,其中除了物质生产功能价值处于增长的趋势,其余各项生态服务功能价值均有不同程度的减少;芦苇沼泽-草甸湿地的生态服务功能价值的变化最大,5年间减少了6.48亿元。

This paper determines the technology system of small-scale regional ecosystem such as the modern Yellow River Delta wetland＇s service function value assessment using high-resolution images,and under the guidance of the technology system to do the ecosystem service function value assessment of modern Yellow River Delta wetland.Firstly,it gets the wetland landscape pattern of Modern Yellow River Delta in 2004 and 2009,and analyses its dynamic changes.On this basis,it estimates a variety of ecological services value of Modern Yellow River Delta wetland in 2004 and 2009,and analyses the value from its composition and spatial distribution.The analysis result reveals that material producing function and nutrient circling function are the main ecological service functions of the study area,and they are respectively 25.22% and 22.57%;from space,the trend of the overall distribution of the wetlands ecosystem service value of the entire study area is increasing gradually from inland to the shallow water,and the services value of swamp meadow wetland ecosystem is generally higher than other regions.Based on the results of the above analysis,it analyses the changes of the value of ecosystem of the study area,revealing that the total value reduced to 9.659 billion yuan from 10.03 billion yuan during2004 to 2009;In addition to that the service value of material producing function grows,the remaining ecological service function value all reduced in varying degrees;the service function value of reed swamp-meadow wetland ecosystem changes mostly,decreasing 648 million yuan during the 5 years.