How does temperature and precipitation affect NPP?

In areas where the elevation is higher than 4000 m, temperature and precipitation will both decrease with the increase of elevation, so the NPP will decrease. In addition, for the region located in 4000–4500 m, the sensitivity of NPP to elevation is higher than that in the region located above 4500 m.

How does temperature affect net primary productivity?

The effect of temperature change is generally positive to increase the productivity by enhancing the photosynthesis as long as the temperature is in a range of optimum level. When temperature exceeds the optimum level, it will increase the rate of respiration causing the NPP continuously declined.

How does precipitation affect net primary productivity?

The results showed that: (1) a 50\% reduction in natural precipitation significantly decreased NPP; a 50\% increase in precipitation did not significantly increase NPP, but it decreased the importance value of L. chinensis because more water promoted the growth of competing species.

What is the relationship between temperature precipitation and productivity in an ecosystem?

In general, productivity has a positive linear relationship with temperature in cold regions16 and with precipitation in dry ecosystems17,18. Biodiversity usually increases with temperature and precipitation19,20.

How does temperature impact terrestrial ecosystems?

Changing climate affects ecosystems in a variety of ways. For instance, warming may force species to migrate to higher latitudes or higher elevations where temperatures are more conducive to their survival. For instance, climate change may exacerbate the stress that land development places on fragile coastal areas.

How do temperature and precipitation affect an ecosystems?

We found that experimental warming and increased precipitation generally stimulated plant growth and ecosystem C fluxes, whereas decreased precipitation had the opposite effects. For example, warming significantly stimulated total NPP, increased ecosystem photosynthesis, and ecosystem respiration.

How does temperature control primary production?

Increasing temperatures may affect macroalgal assemblages in three ways: 1) higher respiration rates can change the ratio of photosynthesis to respiration, decreasing long-term net primary productivity; 2) the combination of high temperature and high irradiance may increase photoinhibition, thereby decreasing NPP …

What is NPP and ANPP?

PRAIS. Net Primary Productivity is the net amount of carbon assimilated after photosynthesis and autotrophic respiration over a given period of time. It is typically represented in units such as kg/ha/year (annual NPP or ANPP).

How does precipitation affect ecosystem?

Heavy rainfall negatively affects grassland ecosystem biomass and C sink function because excess soil water content suppresses plant growth. Such negative effects of heavy rainfall may weaken with annual repeated occurrence, because plants adjust physiologically and/or morphologically.

How does precipitation affect an ecosystem?

Does temperature control primary production in terrestrial or aquatic systems?

Temperature: terrestrial and aquatic; higher temperatures increase primary production (think about how temperature increases chemical reaction rates).