Mulches
Mulches can influence soil temperatures in two important ways. The first way is through absorbing or reflecting incoming light. Dark mulches, such as solid black or woven plastic, absorb solar radiation and can transfer this energy to warm the soil below. Lighter mulches, such as white plastic or straw and hay mulches, reflect more light and do not warm soil temperatures as much. Under warm summer conditions lighter mulches can be a benefit because they may keep soil temperatures lower and less variable, which can be an advantage to plants.
The second way that mulches alter soil temperatures is by reducing heat loss. Heat can be lost from soil through the evaporation of water or when air temperatures are lower than soil temperatures (such as at night). Mulches, both plastic and natural, can retain heat by reducing both of these losses. Using mulches can also require attention to watering because irrigation is needed when impermeable plastic mulches are used. Natural mulches must also be carefully chosen to avoid the potential for introduction of weed seeds or herbicides (for more information on these topics, see W-346D: The TN vegetable garden: Plant management practices).
Floating row covers
Also known as direct covers, floating row covers are usually nonwoven plastic films or agricultural fabrics that can be applied directly over crops. These covers can be installed in large sections that cover many rows in the garden. The edges are usually secured with soil,
6. It influences how much of the sun’s energy is absorbed and released, thereby affecting temperature. Plants release water vapor and influence regional precipitation patterns.
Temperatures can vary widely between regions (such as the mountains and valleys), and between seasons.
Temperature influences the distribution of plants and this is another abiotic factor. In the Lions club tower I could feel the difference in temperature. Bottom at being cold and moist whereas the top is warm and dry. This is shown clearly on the average table. Temperatures such as snow or frost determines the distribution of plants as most plants cannot prevent freezing because of their tissues and this abiotic factor affects the plantae group. Other effects that could cause an establishment to particular plants due to temperature is the gemination of biennial plants, and this is during spring or summer known as vernalization. This is the cooling of seed in order to quickly adapt to the environment and the abiotic factors. As of the forest
Soil turnover - as soil is moved around by digging animals, organic matter is mixed through which distributes nutrients throughout the soil
2. What are the various methods used to protect sensitive crops from damaging low temperatures? Explain why each method works.
It's hard to imagine that global warming would have much effect on the world’s already hottest deserts. Global warming increases the area of deserts. Global warming increases the incidence of drought, which dries up water holes. The temperatures may produce an increasing number of wildfires that alter desert landscapes by slow growing trees and Mojave Desert shrubs and replace them with grass. Grazing animals can destroy many desert plants and animals.
In North America, the boreal forest is known to be one of the largest carbon storage systems. A boreal forest is a biome that is made up of trees such as pines, spruces and another conifer species, the Black Spruce being one of the most essential species of the boreal forest. Fires may be a significant element to the ecosystem in terms of maintaining an ideal community by selecting for species and their traits that, in return, shape the environment, however forest fires are causing the Black Spruce species to deteriorate in population size due to the effects of the fires, caused by a rise in temperature. Clearly, temperature is the leading factor causing constant wildland fires across North America. This concludes the degree of heat intensity in the environment is
In fact, stone mulches can actually change the soil’s pH decreasing acidity and increasing alkalinity, which can be detrimental when growing acid-loving plants. They cover a smaller area per bag, can be more labor intensive to install and lighter colored stones can actually increase the soil’s heat and reduce moisture retention. Applied too thick, stone mulches can impede water getting to the plant’s roots.
In this investigation I will be using two different climates, The Desert and The Arctic
This research looks to understand how microscale differences in soil and plant canopy surface temperatures, rather than macroscale differences, can affect a plant’s photosynthetic output, its ability to survive in a given environment, and the general ecological processes within the alpine fellfield ecosystem. This ecological research was conducted in the White Mountains of eastern California: an alpine fellfield ecosystem with rich plant diversity. From the first to the third of August in 2005, the researchers measured changes in surface temperature on a spatial scale by measuring variances within a few centimeters of soil and a time-based scale by measuring differences within the span of a few minutes. The results showed a tremendous variation in temperature on both spatial and time-based scales based on the respective locations of different plant environments in the alpine fellfield. Models predict that the alpine fellfield will experience a higher range of
Soil respiration is a process which results in the production of carbon dioxide and can be affected by several factors including plant litter and temperature (Biology 208 Lab Manual 2017). With increasing temperatures, the amount of carbon dioxide released during soil respiration will increase (Schlesinger and Andrews 1999). The presence of plant litter in the soil results in increased soil respiration, and results in increased rates of carbon dioxide production (Xiao et al. 2014). This experiment is looking at the effects of temperature and type of plant litter on the rate of soil respiration. For the abiotic factor, we hypothesize that increasing the temperature will positively affect soil respiration rate as it will increase the rate of metabolism of the microorganisms. Soil placed in 30°C chamber will produce more carbon dioxide than the soil placed in the 15°C chamber. For the biotic factor, decreasing the carbon:nitrogen ratio in plant litter will positively affect soil respiration rate by speeding up the rate of decomposition of the plant litter. Therefore, soil with grass will decompose faster and have higher carbon dioxide production than soil with pine needle litter. The interaction between temperature and type of plant litter indicates that soil with grass litter and in a 30°C chamber will have the highest carbon dioxide production.
Temperature plays an important role in how nature works, and even a small change in average temperature can have a noticeable impact on plants, animals, and other natural processes. For example, just a one- to two-degree increase in global temperature can lead to a much greater risk of wildfires. Some parts of the world are warming a lot more than average, which means the effects are much more dramatic.
1 day- As the Earth rotates on its axis that creates seasonal variability, other factors that may impact the climate systems are volcanic aerosols which cool climate and shorten growing seasons. As the global radiation increased, so did the erythemal dose rate. As the hours the day began surface temperature would slowly rise and as the day ended the temperature went down. Climate is measured by devices used to track annual variability and climate patterns include thermometers, rain gauges, and stream gauges.
Compost is a valuable resource for lawns and gardens. When used, compost improves the soil's moisture management, regulates the soil's pH, provides nutrients on a slow-release basis and suppresses certain plant diseases. In addition, it can bind and degrade some pollutants in the plant's growing environment, reduce the need for pesticides and help control erosion. Compost restores soil structure after natural soil microorganisms have been reduced by the use of chemical fertilizers; compost is a soil innoculant. More compost use means less chemical fertilizers; less chemical fertilizers means less run off into the water table. Not only that but it also minimizes odors from agricultural areas. Along with being a valuable alternative to chemical fertilizers, it provides another way for schools to save money and a better understanding of certain aspects of
Seasonal influences may also significantly affect the position of the shoreline indicator relative to the land–water interface (Moore, 2000; Smith et al., 1990). Storminess and short-term shoreline variability are also significant factors that need to be taken into account when assessing longer-term trends of shoreline change (Crowell et al., 1993; Fenster et al., 2001; Honeycutt et al., 2001; List et al., 1999; Morton, 1991; Smith et al., 1990; Zhang et al., 2002). Historical land-based photographs provide general background information to the coastal investigator, such as the presence of a specific morphological feature such as a sand spit or channel entrance. However, most land-based photos are by definition very oblique, with limited information