Chinese Journal of Ecology. 2012, (03) Core

Spatiotemporal variability of soil nitrous oxide emission and its study methods: A reviewChinese Full Text

FU Xiao-qing1,2, LI Yong1 (1Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; 2Graduate University of Chinese Academy of Sciences, Beijing 100125, China)

Abstract: Nitrous oxide （N2O） is one of the greenhouse gases with great potential of increasing temperature, and its concentration in atmosphere continues to rise steadily. Terrestrial ecosystems, especially agro-ecosystem, are one of the important sources of N2O emission. The soil N2O emission of terrestrial ecosystems not only shows great temporal variability, but also has strong spatial variability. To investigate the spatial variability of soil N2O emission under different land uses is of significance to accurately estimate the soil total N2O emission at regional scale. Based on the comprehensive analysis on the spatial variability of soil N2O emission, this paper expatiated the main driving factors of soil N2O emission, such as climate, topography, soil properties, and human activities, and summarized the characteristics of the spatial variability of soil N2O emission of different terrestrial ecosystems and related study methods. It would be necessary to unceasingly improve and develop related methods, and use innovative methods such as wavelets method for studying the spatial variability of soil N2O emission, integrating the temporal dimension. In addition, more attention should be paid to the spatiotemporal variability of soil N2O emission of different land use types, and to the accuracy of the estimation of soil total N2O emission.

Keywords：

nitrous oxide; spatiotemporal variability; driving factor; study method.;

DOI：
10.13292/j.1000-4890.2012.0141
Series：
Subject：
Classification Code：
X131.3

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Spatiotemporal variability of soil nitrous oxide emission and its study methods: A reviewChinese Full Text

FU Xiao-qing1,2, LI Yong1 (1Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; 2Graduate University of Chinese Academy of Sciences, Beijing 100125, China)

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