Transmission Mediums Based Ecosystem Services Classification System

WU Shuyao, LI Shuangcheng†

ACTA Scientiarum Naturalium Universitatis Pekinensis - - Contents -

Key Laboratory for Earth Surface Processes (MOE), College of Urban and Environmental Sciences, Peking University, Beijing 100871; † Corresponding author, E-mail: scli@urban.pku.edu.cn

Abstract After reviewing some current common ecosystem service classification systems, it is found that current classification systems were not able to reflect the fact of different ecosystem types often produce different services due to their unique components, structures and environments. The authors used ecosystem components to create a new ecosystem service classification system based on transmission medium. Ecosystem services are classified into water-transmitted, rock and soil-transmitted, air-transmitted, organism-transmitted and whole ecosystemtransmitted services. Some water-transmitted services include water yield, water purifying, water regulation etc.; rock and soil-transmitted services include soil retention, soil formation, geologic hazard prevention etc.; airtransmitted services include carbon sequestration, air purifying, climate regulation etc.; organism-transmitted services include food production, pollination, pest bio-control etc.; last but not least, whole ecosystem-transmitted services include aesthetic information, recreation, education etc. The proposed classification system may help differentiating services provided by different ecosystem types and identifying some common services provided by the same ecosystem type. Key words ecosystem services classification; transmission medium; service cascade

生态系统服务是目前综合地理学、生态学与经济学等学科的研究热点之一。Costanza 等[1]1997 年发表的“The value of the world’s ecosystem services and natural capital” 以及 2005 年的联合国千年生态

系统评估(Millennium Ecosystem Assessment, MA)[2]推动了大量相关研究。对不同生态系统服务进行科学且实用的分类, 是深入研究生态系统服务不可缺少的前提。由于生态系统结构的复杂性、提供服务

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