The value of gas exchange as a service by rice paddies in suburban Shanghai, PR China
文献类型：SCI/SSCI论文
| 作者 | Xiao Y. |
| 发表日期 | 2005 |
| 关键词 | ecosystem services paddy rice ecosystem gas regulation O-2 emission GHGs emission methane emission ecosystem services irrigated rice fields growth flux biodiversity cultivation taiwan india |
| 英文摘要 | Valuating ecosystem services is crucial for making the importance of ecosystem functioning explicit to the public and decision makers as well as scientists. Investigations of the value of agricultural ecosystems have focused mainly on value food and fibre production and been carried out at relatively coarse scales. However, such studies may have underestimated services provided by agricultural ecosystems because they did not consider additional services such as gas regulation, pollination control, nutrient transformation, and landscape aesthetics. We present the results of a field experimental study of gas regulation services and their economic values provided by rice paddy ecosystems in suburban Shanghai, China. Two major components of gas regulation by paddy fields are O, emissions and greenhouse gases (GHGs) regulation (including the uptake Of CO2 and emissions of CH4 and N2O). Seasonal emissions of O, from experimental plots with different urea application rates ranged from 25,365 to 32,612 kg ha(-1) year(-1), with an economic value of 9549-12,277 RMB ha(-1) year(-1) (Chinese currency; I euro = 10.7967 RMB, Jan 18, 2005). The net GHGs regulation ranged from 705 to 2656 kg CO2-C ha(-1) year(-1), with an economic value ranging from 531 to 2000 RMB ha(-1) year(-1). Thus, the overall economic value of gas regulation provided by the rice paddy ecosystems ranged from 10,080 to 14,277 RMB ha(-1) year(-1). Our results refined, and in some cases, modified previous estimates of agricultural ecosystem services based mainly on coarse-scale studies. Our study also demonstrated a systematic method to valuate the gas regulation services provided by rice paddy ecosystems, which will be useful for understanding regulation of atmospheric chemistry and greenhouse effects by other agriculture ecosystems. (c) 2005 Elsevier B.V. All rights reserved. |
| 出处 | Agriculture Ecosystems & Environment |
| 卷 | 109 |
| 期 | 3-4 |
| 页 | 273-283 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0167-8809 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22740]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Xiao Y.. The value of gas exchange as a service by rice paddies in suburban Shanghai, PR China. 2005. |
入库方式： OAI收割
来源：地理科学与资源研究所
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