Response of nutrient dynamics of decomposing pine (Pinus massoniana) needles to simulated N deposition in a disturbed and a rehabilitated forest in tropical China

2007 ◽  
Vol 22 (4) ◽  
pp. 649-658 ◽  
Author(s):  
Jiangming Mo ◽  
Sandra Brown ◽  
Jinghua Xue ◽  
Yunting Fang ◽  
Zhian Li ◽  
...  
Keyword(s):  
Nutrient Dynamics ◽  
Pinus Massoniana ◽  
N Deposition ◽  
Tropical China

scholarly journals Decomposition responses of pine (Pinus massoniana) needles with two different nutrient-status to N deposition in a tropical pine plantation in southern China

2008 ◽  
Vol 65 (4) ◽  
pp. 405-405 ◽  
Author(s):  
Jiangming Mo ◽  
Hua Fang ◽  
Weixing Zhu ◽  
Guoyi Zhou ◽  
Xiankai Lu ◽  
...  
Keyword(s):  
Southern China ◽  
Nutrient Status ◽  
Pinus Massoniana ◽  
N Deposition ◽  
Pine Plantation

scholarly journals Carbon stock density in planted versus natural Pinus massoniana forests in sub-tropical China

2016 ◽  
Vol 73 (2) ◽  
pp. 461-472 ◽  
Author(s):  
Long-Chi Chen ◽  
Meng-Jie Liang ◽  
Si-Long Wang
Keyword(s):  
Carbon Stock ◽  
Pinus Massoniana ◽  
Carbon Stock Density ◽  
Tropical China

scholarly journals Changes in coupled carbon‒nitrogen dynamics in a tundra ecosystem predate post-1950 regional warming

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
N. John Anderson ◽  
Daniel R. Engstrom ◽  
Peter R. Leavitt ◽  
Sarah M. Flood ◽  
Adam J. Heathcote
Keyword(s):  
Nutrient Dynamics ◽  
Synergistic Effects ◽  
Sediment Cores ◽  
Terrestrial Ecosystems ◽  
N Deposition ◽  
Environmental Drivers ◽  
Arctic Ecosystems ◽  
Regional Warming ◽  
The North ◽  
Tundra Ecosystem

Abstract Arctic ecosystems are changing in response to recent rapid warming, but the synergistic effects of other environmental drivers, such as moisture and atmospheric nitrogen (N) deposition, are difficult to discern due to limited monitoring records. Here we use geochemical analyses of 210Pb-dated lake-sediment cores from the North Slope of Alaska to show that changes in landscape nutrient dynamics started over 130 years ago. Lake carbon burial doubled between 1880 and the late-1990s, while current rates (~10 g C m−2 yr−1) represent about half the CO2 emission rate for tundra lakes. Lake C burial reflects increased aquatic production, stimulated initially by nutrients from terrestrial ecosystems due to late-19th century moisture-driven changes in soil microbial processes and, more recently, by atmospheric reactive N deposition. These results highlight the integrated response of Arctic carbon cycling to global environmental stressors and the degree to which C–N linkages were altered prior to post-1950 regional warming.

scholarly journals Response of soil microbial community and hydrothermal environment to nitrogen deposition in Pinus massoniana forest in Central Asia

2019 ◽  
Vol 23 (5 Part A) ◽  
pp. 2551-2559
Author(s):  
Nanjie Li ◽  
Qingping Zeng ◽  
Shuhui Jiang ◽  
Binghui He
Keyword(s):  
Microbial Community ◽  
Water Content ◽  
Nitrogen Deposition ◽  
Soil Microbial Community ◽  
Soil Microbes ◽  
Pinus Massoniana ◽  
N Deposition ◽  
Soil Microbial ◽  
Hydrothermal Environment ◽  
The Relationship

In order to demonstrate the response of soil microbial community and hydrothermal environment to nitrogen deposition (low nitrogen N20: 20 kg?hm?2; medium nitrogen N40: 40 kg?hm?2; high nitrogen N60: 60 kg?hm-2, and contrast N0: 0 kg?hm?2), a Pinus massoniana forest in Central Asia was chosen to do the nitrogen deposition simulation experiment. This research is aimed to provide a theoretical evidence for the protection of soil ecosystem under different forest types in china. The results showed that: soil microbes of Pinus massoniana forest were in seasonal changes (spring, autumn, winter, and summer). Differences in different seasons were significant: a very significant quadratic relationship was shown between soil microbes and soil temperature. However, the relationship between soil microbes and the soil water content was not closely related. The N deposition reduced the relationship between microbes and temperature but increased the correlation between microbes and water content: effects of N deposition on soil temperature and soil water content were significant, but the effects were in small scale, and the effects of N deposition on soil microbial community structure were significant.

Genetic variations and correlation analysis of N and P traits in Pinus massoniana under combined conditions of N deposition and P deficiency

Trees ◽  
2016 ◽  
Vol 30 (4) ◽  
pp. 1341-1350 ◽  
Author(s):  
Chenyang Hu ◽  
Lei Zhao ◽  
Zhichun Zhou ◽  
Guoqing Dong ◽  
Yi Zhang
Keyword(s):  
Correlation Analysis ◽  
Pinus Massoniana ◽  
N Deposition ◽  
Genetic Variations ◽  
P Deficiency

scholarly journals Responses of Litter Decomposition and Nutrient Dynamics to Nitrogen Addition in Temperate Shrublands of North China

2021 ◽  
Vol 11 ◽  
Author(s):  
Jianhua Zhang ◽  
He Li ◽  
Hufang Zhang ◽  
Hong Zhang ◽  
Zhiyao Tang
Keyword(s):  
Litter Decomposition ◽  
North China ◽  
Nutrient Dynamics ◽  
Nutrient Content ◽  
Nitrogen Addition ◽  
N Deposition ◽  
Plant Litter ◽  
N Addition ◽  
Soil C ◽  
N Input

Plant litter decomposition is a crucial ecosystem process that regulates nutrient cycling, soil fertility, and plant productivity and is strongly influenced by increased nitrogen (N) deposition. However, the effects of exogenous N input on litter decomposition are still poorly understood, especially in temperate shrublands, which hinders predictions of soil C and nutrient dynamics under the context of global change. Temperate shrub ecosystems are usually N-limited and particularly sensitive to changes in exogenous N input. To investigate the responses of Vitex negundo and Spiraea trilobata litter decomposition to N addition, we conducted a field experiment in Vitex- and Spiraea-dominated shrublands located on Mt. Dongling in Beijing, North China. Four N treatment levels were applied: control (N0; no N addition), low N (N1; 20 kg⋅N⋅ha–1⋅year–1), moderate N (N2; 50 kg⋅N⋅ha–1⋅year–1), and high N (N3; 100 kg⋅N⋅ha–1⋅year–1). The litter decomposition in V. negundo was faster than that in S. trilobata, which may be due to the differences in their nutrient content and C/N ratio. N addition increased the amount of remaining N in the two litter types but had no effect on the remaining mass, C, or P. Nitrogen treatment did not affect the litter decomposition rates (k) of either litter type; i.e., N addition had no effect on litter decomposition in temperate shrublands. The neutral effect of N addition on litter decomposition may be primarily explained by the low temperatures and P limitation at the site as well as the opposing effects of the exogenous inorganic N, whereby exogenous N inhibits lignin degradation but promotes the decomposition of readily decomposed litter components. These results suggest that short-term N deposition may have a significant impact on N cycling but not C or P cycling in such shrub ecosystems.

Effects of drought and nitrogen addition on growth and leaf physiology of Pinus massoniana seedlings

2019 ◽  
Vol 51 (5) ◽  
Author(s):  
Defu Wang ◽  
Guomin Huang ◽  
Honglang Duan ◽  
Xueming Lei ◽  
Wenfei Liu ◽  
...  
Keyword(s):  
Pinus Massoniana ◽  
Nitrogen Addition ◽  
Leaf Physiology ◽  
Effects Of Drought
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