The rice field has a surprisingly great biodiversity, perhaps the greatest of any tropical rainfed system, where Heckman (1979) recorded a total of 589 species of organisms in a rice field in Thailand.
What are the biotic components of a rice field?
Biotic stresses include insect pests, fungus, bacteria, viruses, and herbicide toxicity. Abiotic stresses include such as drought, high salinity, high or low temperatures, flooding, high light, ozone, low nutrient availability, mineral deficiency, heavy metals, pollutants, wind, and mechanical injury.
What type of ecosystem is paddy field?
The ecosystem of paddy field can be described as having two major characteristics: landscape and temporal change. Paddy fields are a part of a Satoyama landscape. This landscape is a mosaic of fallow fields, grasslands, woodlands, ponds and irrigation ditches (Fig.
What do rice plants perform in the ecosystem?
Rice fields provide habitats for wildlife species that include fish, plants, amphibians, reptiles, molluscs, crustaceans and insects, many of which can be captured, collected or farmed as sources of food and medicine.
Which of these is a field for growing rice?
paddy, also called rice paddy, small, level, flooded field used to cultivate rice in southern and eastern Asia.
What is the meaning of rice field?
(ˈraɪsfiːld) a field where rice is grown.
Is paddy field is a natural ecosystem?
Paddy field is an example of artificial ecosystem not natural ecosystem. This is because it is maintained by humans. … In such artificial ecosystems every component is provided externally.
Which ecosystem has high biodiversity low biodiversity?
Estuarine areas (where rivers meet seas and oceans) have high biodiversity compared to other areas. Trophical rainforests are rich in terms of biodiversity. Arid and semiarid areas have low biodiversity. Deserts, for example, contain limited numbers of species.
Which organism is predominant in rice ecosystem?
Both communities were dominated by Gammaproteobacteria. In the vegetative stage, Alphaproteobacteria and Betaproteobacteria were more abundant and, in contrast, Bacilli and Clostridia were the more dominant classes in the reproductive stage.
Why are rice fields plowed?
Plowing breaks up the blocky structure of the soil which can aid in drainage and root growth. Plowing fields can also turn organic matter into soil to increase decomposition and add nutrients from the organic matter to the soil. Many farmers spread manure from cattle and swine onto their fields.
Is low biodiversity?
Low biodiversity is when there are a few prominent species and a low number of other species within the habitat. High biodiversity is a habitat or ecosystem that has a high number of different species.
Is an agricultural farmland an ecosystem?
A typical example of artificial ecosystem is a cultivated field or agro-ecosystem. It’s different from a natural ecosystem for four main characteristics: … simplification: a farmer favours a plant species removing all other animal or plant species which could damage it.
What is an ecosystem with low biodiversity?
Low biodiversity is characteristic of an unhealthy or degraded environment. A mown lawn in a city park is an example of an ecosystem with low biodiversity. There will be two or three kinds of grasses, some dandelions, of course, and maybe a robin or some starlings poking about for worms or bugs.
What is lowland rice?
Lowland rice is grown in fields that can be flooded and they are either rain-fed or irrigated. Rice is grown in large quantities for markets and fertilisers are used.
Which type of crop is rice?
Rice is a Kharif crop that requires high temperature, heavy rainfall and high humidity for proper growth. The areas with less rainfall use irrigation for rice cultivation. Wheat: It is the most important cereal crop in the north and north-western parts of the country.
Why rice fields are flooded?
The main reason for flooding the rice fields is that most rice varieties maintain better growth and produce higher yields when grown in flooded soils, than when grown in dry soils. The water layer also helps to suppress the weeds.