SOME ADVANCE IN THE MAIN FACTORS CONTROLLING SOIL RESPIRATION
SOME ADVANCE IN THE MAIN FACTORS CONTROLLING SOIL RESPIRATION
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DOI：
10.11867/j.issn.1001-8166.2005.07.0778
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发表时间：
2005-07
期刊：
影响因子：
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通讯作者：
Zhang Dong-qiu;Shi Peili;Zhang Xianzhou
中科院分区：
文献类型：
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作者：
Zhang Dong-qiu;Shi Peili;Zhang Xianzhou
土壤呼吸受多种因素的影响，在不同的时空生态系统中，这些因素是不同的。本文从土壤温度、土壤水分、降雨量、土壤C/N等非生物因子和植被类型、生物量、叶面积指数、凋落物、人类活动等生物因子等方面综述了影响植被恢复的主要因素。在总结的基础上，讨论了土壤呼吸的Q10、关键控制因子以及各因子之间的交互作用。土壤温度、土壤水分是控制土壤呼吸的关键因子。因此，在这些因子模型的基础上估算土壤呼吸量是很有帮助的。然而，该预测在低温和高温或潮湿条件下分别存在低估和高估的局限性。为了获得准确的土壤呼吸估算，进一步研究的主要建议是：将室内土壤呼吸测量与生态系统碳通量的涡动协方差测量相结合，同步测量生物因子和非生物因子，特别要注意生物因子的修饰对非生物因子控制器性能的影响，在典型的植物物候期和不同的天气条件下进行更多的测量，加强实验操作和建模。综上所述，土壤呼吸是一个复杂的生化过程，虽然受多因素相互作用的影响，但受一定的模型控制。为了获得准确的建模和预测，需要寻找关键因素并估计交互因素的综合影响。
Soil respiration is influenced by many factors, which are different in a variety of spatio-temporal ecosystems. The objective of this paper is to review the main factors including abiotic factors such as the soil temperature, soil moisture, rainfall, soil C/N,biotic factors such as vegetation types, biomass, leaf area index, litter, and human activities as well. Based on the summarization, the Q10 of soil respiration, key controlling factors and interaction among different factors were discussed. Soil temperature, soil moisture are the key factors controlling soil respiration. So it is helpful to estimate the amount of soil respiration on the basis of modeling by these factors. However, the prediction has a limitation of underestimation and overestimation at low and high temperature or moisture conditions respectively. In order to acquire accurate estimation of soil respiration, main suggestions for further study are to: combine measurement of soil respiration by chamber with carbon flux of ecosystem by eddy covariance, measure synchronously the biotic and abiotic factors, especially pay more attention to the role of modification of biotic factors on the performance of abiotic controllers, make more measurement in typical plant phenology phase and different weather conditions, and strengthen experimental manipulation and modeling. In conclusion, soil respiration is a complex biochemical process, which is controlled by certain models although regulated by interactions among multi-factors. In order to get accurate modeling and prediction, key factors need to be sought and estimate synthetic influence of interactive factors.