Journal Article10.1111/J.1461-0248.2004.00579.X
Carbon input to soil may decrease soil carbon content
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TL;DR: In this article, a negative relationship between primary production and soil carbon (C) content is found, and the authors conclude that energy available to soil microbes and microbial competition are important determinants of soil C decomposition.
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Abstract: It is commonly predicted that the intensity of primary production and soil carbon (C) content are positively linked. Paradoxically, many long-term field observations show that although plant litter is incorporated to soil in large quantities, soil C content does not necessarily increase. These results suggest that a negative relationship between C input and soil C conservation exists. Here, we demonstrate in controlled conditions that the supply of fresh C may accelerate the decomposition of soil C and induce a negative C balance. We show that soil C losses increase when soil microbes are nutrient limited. Results highlight the need for a better understanding of microbial mechanisms involved in the complex relationship between C input and soil C sequestration. We conclude that energy available to soil microbes and microbial competition are important determinants of soil C decomposition.
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Citations
Conservation Agriculture and Climate Change
Michele Pisante,Fabio Stagnari,Marco Acutis,Marco Bindi,Lorenzo Brilli,V. Di Stefano,Marco Carozzi +6 more
- 01 Jan 2015
TL;DR: In this article, the impacts and benefits of conservation agriculture (CA) with respect to climate change, and examining if there are any misleading findings at present in the scientific literature, are discussed, and the conditions that can lead to increase in soil organic matter content and improvement in soil health under CA practices which involve minimum soil disturbance, maintenance of soil cover, and crop diversity.
Simulated leaf litter addition causes opposite priming effects on natural forest and plantation soils
Maokui Lyu,Jinsheng Xie,Matthew A. Vadeboncoeur,Minhuang Wang,Xi Qiu,Yinbang Ren,Miaohua Jiang,Yusheng Yang,Yakov Kuzyakov +8 more
TL;DR: In this article, the impact of coniferous leaf-litter inputs on the soil organic matter decomposition was examined by adding 13C-labeled leaflitter of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) to soils from a natural evergreen broad-leaved forest and an adjacent Chinese fir plantation converted from a traditional broad-leafed forest 42 years ago.
58
Long-term nitrogen deposition enhances microbial capacities in soil carbon stabilization but reduces network complexity
Xingyu Ma,Tengxu Wang,Zhou Shi,Nona R. Chiariello,Kathryn M. Docherty,Christopher B. Field,Jessica L. M. Gutknecht,Qunchang Gao,Yunfu Gu,Xue Guo,Bruce A. Hungate,Jiesi Lei,Audrey Niboyet,Xavier Le Roux,Mengting Yuan,Tong Yuan,Jizhong Zhou,Yunfeng Yang +17 more
TL;DR: In this paper , the authors examined various functional traits of soil microbial communities and how these traits are interrelated in a Mediterranean-type grassland administrated with 14 years of 7 g m-2 year-1 of N amendment, based on estimated atmospheric reactive nitrogen (N) deposition in areas within California, USA, by the end of the twenty-first century.
Above- and below-ground response to soil water change in an alpine wetland ecosystem on the Qinghai-Tibetan Plateau, China
Gao-Lin Wu,Gao-Lin Wu,Guo-Hua Ren,Guo-Hua Ren,Dong Wang,Dong Wang,Zhi-Hua Shi,Zhi-Hua Shi,David N. Warrington,David N. Warrington +9 more
TL;DR: In this paper, a gradient analysis of soil water using a sequence space-series variation was conducted to determine the responses of a natural alpine wetland community to decreases in soil moisture.
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Input related microbial carbon dynamic of soil organic matter in particle size fractions
TL;DR: It is found that fresh organic matter input drives soil organic matter dynamic and microbial community preferentially assimilated fresh carbon sources but also used recycled existing soil carbon, however, the priming rate was drastically reduced under carbon limitation.
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