chandel
发表于 2025-3-26 21:27:50
More is less: agricultural impacts on the N cycle in Argentina,le scales, from the global impact on atmospheric chemistry to the impact of human activities on soil organic matter and fertility at the scale of square meters. Nevertheless, anthropogenic loading of nitrogen cycling in natural and managed ecosystems can be seen most directly at the regional scale,
Neuropeptides
发表于 2025-3-27 01:59:45
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GULLY
发表于 2025-3-27 06:01:32
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召集
发表于 2025-3-27 09:26:21
Urban influences on the nitrogen cycle in Puerto Rico, the Northern hemisphere, where experimental data are available. In tropical developing countries, however, experimental studies are lacking. This paper summarizes available data and assesses the impacts of human activities on N fluxes in Puerto Rico, a densely populated Caribbean island that has ex
假装是我
发表于 2025-3-27 14:21:00
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闪光你我
发表于 2025-3-27 19:35:23
The influence of climate on average nitrogen export from large watersheds in the Northeastern Unitendscape, with on average 20 to 25% of these inputs exported in rivers and 75 to 80% of the nitrogen retained or denitrified in the landscape. Here, we use data for average riverine nitrogen fluxes and anthropogenic inputs of nitrogen over a 6-year period (1988–1993) for 16 major watersheds in the no
Common-Migraine
发表于 2025-3-28 01:44:02
Coastal eutrophication assessment in the United States,oastal pollution problem includes impacts including increased areas and severity of hypoxic and anoxic waters; alteration of food webs; degradation and loss of sea grass beds, kelp beds and coral reefs; loss of biodiversity; and increased incidences and duration of harmful algal blooms. In this pape
杂色
发表于 2025-3-28 03:53:09
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CAPE
发表于 2025-3-28 09:37:09
Nutrient-chlorophyll relationships in tropical-subtropical lakes: do temperate models fit?,192 lakes from tropical and subtropical regions we examine the relationship between total P (TP) and chlorophyll (Chl). The lakes are all located between 30° S to 31° N include systems in Asia, Africa, and North and South America but are dominated by Brazilian (.=79) and subtropical N. American (.=6
Demonstrate
发表于 2025-3-28 12:46:31
The stable carbon and nitrogen isotopic composition of vegetation in tropical forests of the Amazonlitter from four sites in the Amazon region, Brazil. Samples were collected in Manaus (3° 06′07″ S; 60°01′30″ W), Ji-Paraná (10°53′07″ S; 61°57′06″ W), and Santarém (2°26′35″ S; 54°42′30″ W) with mean annual precipitation of 2207, 2040 and 1909 mm respectively. The overall average for all leaf sampl