Different types of nitrogen deposition show variable effects on the soil carbon cycle process of temperate forests

2014 ◽  
Vol 20 (10) ◽  
pp. 3222-3228 ◽  
Author(s):  
Yuhan Du ◽  
Peng Guo ◽  
Jianqiu Liu ◽  
Chunyu Wang ◽  
Ning Yang ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Soil Carbon ◽  
Nitrogen Deposition ◽  
Temperate Forests ◽  
Different Types

scholarly journals Root‐derived inputs are major contributors to soil carbon in temperate forests, but vary by mycorrhizal type

2021 ◽  
Author(s):  
Adrienne B. Keller ◽  
Edward R. Brzostek ◽  
Matthew E. Craig ◽  
Joshua B. Fisher ◽  
Richard P. Phillips
Keyword(s):  
Soil Carbon ◽  
Temperate Forests

scholarly journals Increased Litter Greatly Enhancing Soil Respiration in Betula platyphylla Forests of Permafrost Region, Northeast China

Forests ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 89
Author(s):  
Hong Wei ◽  
Xiuling Man
Keyword(s):  
Soil Respiration ◽  
Carbon Cycle ◽  
Soil Carbon ◽  
Northeast China ◽  
Stand Age ◽  
Permafrost Region ◽  
Betula Platyphylla ◽  
Litter Input ◽  
Litter Manipulation ◽  
And Control

The change of litter input can affect soil respiration (Rs) by influencing the availability of soil organic carbon and nutrients, regulating soil microenvironments, thus resulting in a profound influence on soil carbon cycle of the forest ecosystem. We conducted an aboveground litterfall manipulation experiment in different-aged Betula platyphylla forests (25-, 40- and 61-year-old) of the permafrost region, located in the northeast of China, during May to October in 2018, with each stand treated with doubling litter (litter addition, DL), litter exclusion (no-litter, NL) and control litter (CK). Our results indicated that Rs decreased under NL treatment compared with CK treatment. The effect size lessened with the increase in the stand age; the greatest reduction was found for young Betula platyphylla forest (24.46% for 25-year-old stand) and tended to stabilize with the growth of forest with the reduction of 15.65% and 15.23% for 40-and 61- year-old stands, respectively. Meanwhile, under DL treatment, Rs increased by 27.38%, 23.83% and 23.58% on 25-, 40- and 61-year-old stands, respectively. Our results also showed that the increase caused by DL treatment was larger than the reduction caused by NL treatment, leading to a priming effect, especially on 40- and 61-year-old stands. The change in litter input was the principal factor affecting the change of Rs under litter manipulation. The soil temperature was also a main factor affecting the contribution rate of litter to Rs of different-aged stands, which had a significant positive exponential correlation with Rs. This suggests that there is a significant relationship between litter and Rs, which consequently influences the soil carbon cycle in Betula platyphylla forests of the permafrost region, Northeast China. Our finding indicated the increased litter enhanced the Rs in Betula platyphylla forest, which may consequently increase the carbon emission in a warming climate in the future. It is of great importance for future forest management in the permafrost region, Northeast China.

scholarly journals The changing global carbon cycle: linking plant-soil carbon dynamics to global consequences

2009 ◽  
Vol 97 (5) ◽  
pp. 840-850 ◽  
Author(s):  
F. Stuart Chapin III ◽  
Jack McFarland ◽  
A. David McGuire ◽  
Eugenie S. Euskirchen ◽  
Roger W. Ruess ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Soil Carbon ◽  
Carbon Dynamics ◽  
Global Carbon Cycle ◽  
Soil Carbon Dynamics ◽  
Plant Soil ◽  
Global Carbon

scholarly journals The dikes of the sub-lakes change soil carbon cycle in the littoral wetland in Poyang Lake

2018 ◽  
Vol 30 (5) ◽  
pp. 1260-1270 ◽  
Author(s):  
SHEN Ruichang ◽  
◽  
LAN Zhichun ◽  
FANG Changming ◽  
CHEN Jiakuan
Keyword(s):  
Carbon Cycle ◽  
Soil Carbon ◽  
Poyang Lake

scholarly journals Responses of Carbon Dynamics to Nitrogen Deposition in Typical Freshwater Wetland of Sanjiang Plain

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yang Wang ◽  
Jingshuang Liu ◽  
Longxue He ◽  
Jingxin Dou ◽  
Hongmei Zhao
Keyword(s):  
Soil Carbon ◽  
Nitrogen Deposition ◽  
Carbon Dynamics ◽  
N Deposition ◽  
Sanjiang Plain ◽  
Carbon Accumulation ◽  
Total Biomass ◽  
Soil System ◽  
Carbon Fractions ◽  
Soil Carbon Fractions

The effects of nitrogen deposition (N-deposition) on the carbon dynamics in typicalCalamagrostis angustifoliawetland of Sanjiang Plain were studied by a pot-culture experiment during two continuous plant growing seasons. Elevated atmospheric N-deposition caused significant increases in the aboveground net primary production and root biomass; moreover, a preferential partition of carbon to root was also observed. Different soil carbon fractions gained due to elevated N-deposition and their response intensities followed the sequence of labile carbon > dissolved organic carbon > microbial biomass carbon, and the interaction between N-deposition and flooded condition facilitated the release of different carbon fractions. Positive correlations were found between CO2and CH4fluxes and liable carbon contents with N-deposition, and flooded condition also tended to facilitate CH4fluxes and to inhibit the CO2fluxes with N-deposition. The increases in soil carbon fractions occurring in the nitrogen treatments were significantly correlated with increases in root, aboveground parts, total biomass, and their carbon uptake. Our results suggested that N-deposition could enhance the contents of active carbon fractions in soil system and carbon accumulation in plant of the freshwater wetlands.

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