نتایج جستجو برای: aboveground weight

تعداد نتایج: 353811  

Journal: :Remote Sensing 2016
Patricio Xavier Molina Gregory Asner Mercedes Farjas Abadía Juan Carlos Ojeda Manrique Luis Alberto Sánchez Diez Renato Valencia

Mapping aboveground carbon density in tropical forests can support CO2 emission monitoring and provide benefits for national resource management. Although LiDAR technology has been shown to be useful for assessing carbon density patterns, the accuracy and generality of calibrations of LiDAR-based aboveground carbon density (ACD) predictions with those obtained from field inventory techniques sh...

2012
Dunmei Lin Jiangshan Lai Helene C. Muller-Landau Xiangcheng Mi Keping Ma

The subtropical forest biome occupies about 25% of China, with species diversity only next to tropical forests. Despite the recognized importance of subtropical forest in regional carbon storage and cycling, uncertainties remain regarding the carbon storage of subtropical forests, and few studies have quantified within-site variation of biomass, making it difficult to evaluate the role of these...

2005
THOMAS J. BRANDEIS ROCÍO SUÁREZ ROZO

—Total aboveground live tree biomass in Puerto Rican lower montane wet, subtropical wet, subtropical moist and subtropical dry forests was estimated using data from two forest inventories and published regression equations. Multiple potentially-applicable published biomass models existed for some forested life zones, and their estimates tended to diverge with increasing tree diameter at breast ...

2016
Tao Zhang Xue Yang Rui Guo Jixun Guo

To examine the influence of elevated temperature and nitrogen (N) addition on species composition and development of arbuscular mycorrhizal fungi (AMF) and the effect of AMF on plant community structure and aboveground productivity, we conducted a 5-year field experiment in a temperate meadow in northeast China and a subsequent greenhouse experiment. In the field experiment, N addition reduced ...

Journal: :Ecology 2009
Bert Hidding Bart A Nolet Thujs De Boer Peter P De Vries Marcel Klaassen

The degree to which vertebrate herbivores exploitatively compete for the same food plant may depend on the level of compensatory plant growth. Such compensation is higher when there is reduced density-dependent competition in plants after herbivore damage. Whether there is relief from competition may largely be determined by the life-history stage of plants under herbivory. Such stage-specific ...

Journal: :Ecology 2009
Holger Bessler Vicky M Temperton Christiane Roscher Nina Buchmann Bernhard Schmid Ernst-Detlef Schulze Wolfgang W Weisser Christof Engels

We investigated effects of plant species richness in experimental grassland plots on annual above- and belowground biomass production estimated from repeated harvests and ingrowth cores, respectively. Aboveground and total biomass production increased with increasing plant species richness while belowground production remained constant. Root to shoot biomass production ratios (R/S) in mixtures ...

2016
Jun-Tao Wang Yuan-Ming Zheng Hang-Wei Hu Jing Li Li-Mei Zhang Bao-Dong Chen Wei-Ping Chen Ji-Zheng He

The belowground soil prokaryotic community plays a cardinal role in sustaining the stability and functions of forest ecosystems. Yet, the nature of how soil prokaryotic diversity co-varies with aboveground plant diversity along a latitudinal gradient remains elusive. By establishing three hundred 400-m(2) quadrats from tropical rainforest to boreal forest in a large-scale parallel study on both...

2004
Michelle S. Lett Alan K. Knapp John M. Briggs John M. Blair

The clonal shrub Cornus drummondii C.A. Mey. is rapidly increasing in cover and displacing mesic grassland species in the central USA as a consequence of fire suppression. We assessed the impact of C. drummondii on carbon (C) and nitrogen (N) pools and C fluxes in a tallgrass prairie in eastern Kansas, USA, through a comparison of both burned and unburned C. drummondii islands with open grassla...

2007
CHRISTA R. SCHWINTZER

SCHWINTZER, C. R. 1983. Primary productivity and nitrogen, carbon, and biomass distribution in a dense My)-ica gale stand. Can. J. Bot. 61: 2943-2948. Aboveground vascular vegetation was harvested in twenty 0.25-m' plots at the end of the growing season in a weakly minerotrophic, central Massachusetts peatland. The materials were separated by species and component and the Myrica gale fractions ...

2013
Andrew R. Smith Martin Lukac John R. Healey

Elevated CO2 enrichment induces a differential biomass response in a mixed species temperate forest plantation. The NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. Acknowledgements: 89 words 29 Number of Figures: 6 30 Number of Tables: 7 31 32 33 Su...

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