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Assessing the impacts of droughts on net primary productivity in China
Journal of Environmental Management, 2013Frequency and severity of droughts were projected to increase in many regions. However, their effects of temporal dynamics on the terrestrial carbon cycle remain uncertain, and hence deserve further investigation. In this paper, the droughts that occurred in China during 2001-2010 were identified by using the standardized precipitation index (SPI ...
Fengsong, Pei +3 more
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Net Primary Productivity in Coral Reef Sponges
Science, 1983Nine of the ten most common sponge species on the fore-reef slope of Davies Reef(Great Barrier Reef) contain symbiotic cyanobacteria. Six of the ten are net primary producers, with three times more oxygen produced by photosynthesis than is consumed during respiration.
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The Effects of Urbanization on Net Primary Productivity in Southeastern China
Environmental Management, 2010Net primary productivity (NPP) is one of the major ecosystem products on which human societies rely heavily. However, rapid urban sprawl and its associated dense population and economic conditions have generated great pressure on natural resources, food security, and environments.
Dengsheng, Lu +5 more
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Net Primary Production in the Shortgrass Steppe
2008Net primary production (NPP), the amount of carbon or energy fixed by green plants in excess of their respiratory needs, is the fundamental quantity upon which all heterotrophs and the ecosystem processes they are associated with depend. Understanding NPP is therefore a prerequisite to understanding ecosystem dynamics.
William K. Lauenroth +1 more
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Global climate change and terrestrial net primary production
Nature, 1993A process-based model was used to estimate global patterns of net primary production and soil nitrogen cycling for contemporary climate conditions and current atmospheric CO2 concentration. Over half of the global annual net primary production was estimated to occur in the tropics, with most of the production attributable to tropical evergreen forest ...
Jerry M. Melillo +5 more
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TURC: A diagnostic model of continental gross primary productivity and net primary productivity
Global Biogeochemical Cycles, 1996TURC, a diagnostic model for the estimation of continental gross primary productivity (GPP) and net primary productivity (NPP), is presented. This model uses a remotely sensed vegetation index to estimate the fraction of solar radiation absorbed by canopies, and an original parameterization of the relationship between absorbed solar radiation and GPP ...
Anne Ruimy +2 more
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Net primary production and net ecosystem production of a boreal black spruce wildfire chronosequence
Global Change Biology, 2004AbstractNet primary production (NPP) was measured in seven black spruce (Picea mariana(Mill.) BSP)‐dominated sites comprising a boreal forest chronosequence near Thompson, Man., Canada. The sites burned between 1998 and 1850, and each contained separate well‐ and poorly drained stands.
Ben Bond‐Lamberty +2 more
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Geographical dimensions of terrestrial net and gross primary productivity
Radiation and Environmental Biophysics, 1978The paper presents a comparative summary of previous attempts by the author to assess and map global primary productivity using environmental parameters as predictors. The individual components of the productivity process, net production, gross production, dark respiration as well as their regional rates are computed for 10 degree latitudinal belts.
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Soils as biotic constructs favouring net primary productivity
Geoderma, 1993Abstract Many, if not most, physical and chemical properties of soils required for plant growth are affected strongly by biotic processes. Feedback processes involving primary producers and decomposers may be involved in the development of properties that favour net primary productivity in terrestrial ecosystems.
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Biomass and Net Primary Productivity of Portuguese Forests
1981In Portugal, as elsewhere, after the energy crisis, forests started to be regarded with a new interest. Due to this attitude arose the necessity of more information concerning our forest resources and we have recently begun an effort to acquire this knowledge. The present paper reflects the first steps in this direction.
Luís S. Barreto, António D. Fabião
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