资源与生态学报 ›› 2011, Vol. 2 ›› Issue (4): 328-337.DOI: 10.3969/j.issn.1674-764x.2011.04.006

• 论文 • 上一篇    下一篇

中国10类典型稻田生态系统服务评价

肖玉, 安凯, 谢高地, 鲁春霞   

  1. 中国科学院地理科学与资源研究所,北京 100101
  • 收稿日期:2011-06-27 修回日期:2011-10-21 出版日期:2011-12-30 发布日期:2011-12-22
  • 通讯作者: XIAO Yu. Email: xiaoy@igsnrr.ac.cn.

Evaluation of Ecosystem Services Provided by 10 Typical Rice Paddies in China

XIAO Yu, AN Kai, XIE Gaodi, LU Chunxia   

  1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2011-06-27 Revised:2011-10-21 Online:2011-12-30 Published:2011-12-22
  • Supported by:

    Strategic Priority Research Program of the Chinese Academy of Sciences (XDA05050203); National Natural Science Foundation of China (31140048, 30770410 and 31070384); Innovation Project of Institute of Geographic Sciences and Natural Resources Research, CAS (200905010).

摘要: 在公开发表数据基础上,本研究评价了全国6大稻作区10类稻田提供的生态系统服务。研究的服务包括稻田初级产品生产、气体调节、氮素转化、土壤有机质累积以及水调节和洪水控制等5项生态系统服务。研究结果显示,稻田谷物产量为4.71-12.18 t ha-1 y-1,稻草为4.65-9.79 t ha-1 y-1;O2调节量为8.27-19.69 t ha-1 y-1,温室气体调节量为-2.13-19.24 t ha-1 y-1 (CO2 当量);氮素输入量为209.70-513.93 kg N ha-1 y-1,输出量为112.87-332.69 kg N ha-1 y-1;土壤有机质库变化为0.69-4.88 t C ha-1 y-1;水调节量为-19 875-6430 m3 ha-1 y-1,洪水控制量为1500 m3 ha-1 y-1。研究结果还显示,10类稻田的生态系统服务价值为8605-21 405 美元 ha-1 y-1,除了初级产品生产以外的其他生态系统服务价值仅占74%-89%。在施氮量为275-297 kg N ha-1时,稻田生态系统服务价值相对较高。目前仅以农产品生产来计算稻田生态系统的价值显著低估了稻田生态系统对人类社会的重要性。随着越来越多的森林、草地等转为城市和工业用途,农田特别是稻田生态系统将具有越来越高的生态重要性。农田生态系统农产品生产以外的生态系统服务将受到越来越多的关注。

关键词: 稻田, 生态系统服务, 气体调节, 土壤有机质累积, 氮素转化

Abstract: Based on reference review, this study investigated ecosystem services supported by 10 typical rice paddies in six rice planting regions of China. The services were primary production, gas regulation, nitrogen transformation, soil organic matter accumulation, and water regulation and flood control. The results indicated that grain production of the 10 rice paddies was between 4.71 and 12.18 t ha-1 y-1; straw production was 4.65 to 9.79 t ha-1 y-1; gas regulation was calculated to emit O2 ranging from 8.27 to 19.69 t ha-1 y-1 and to assimilate greenhouse gases ranging from -2.13 to 19.24 t ha-1 y-1 (in CO2 equivalent); nitrogen transformation was estimated as nitrogen input ranging from 209.70 to 513.93 kg N ha-1 y-1 and nitrogen output of 112.87 to 332.69 kg N ha-1 y-1; soil organic matter accumulation was calculated to be between 0.69 and 4.88 t C ha-1 y-1; water regulation was estimated to consume water resources of 19875 m3 ha-1 y-1 and to support water resources of 6430 m3 ha-1 y-1; and flood control of several of the rice paddies was calculated to be 1500 m3 ha-1 y-1. The integrated economic value of ecosystem services of these rice paddies was estimated at USD 8605-21 405 ha-1 y-1, of which 74%-89% of the value can be ascribed to ecosystem services outside primary production. The results also indicated that the integrated economic value of the ecosystem services of the 10 rice paddies was higher when nitrogen fertilizer was applied in the range of 275 to 297 kg N ha-1. Until now, the economic value of the rice paddy ecosystem has been underestimated as only the economic value of grain and straw production was previously calculated. As more and more forest land and grassland is lost to urban and industrial use, cropland and especially rice paddies, will become more ecologically important to society. The economic value of ecosystem services supplied by rice paddies, outside primary production, are worthy of increased research attention.

Key words: rice paddy, ecosystem services, gas regulation, soil organic matter accumulation, nitrogen transformation