suggset any 3 major points for nautral vegetataion
Answers
Answered by
1
The naturally growing plant cover; without human aid; is called natural vegetation. The vegetation which has been left undisturbed by humans for a long time is called virgin vegetation.
Different types of soil are fit for different types of vegetation. For example; sandy soil is fit for cactus and thorny bushes, while wet and marshy soil is fit for mangrove vegetation.
Temperature and humidity are the main factors which determine the character and extent of vegetation. An area with high temperature and high humidity supports evergreen forest, while an area with high temperature and low humidity supports thorny bushes
Different types of soil are fit for different types of vegetation. For example; sandy soil is fit for cactus and thorny bushes, while wet and marshy soil is fit for mangrove vegetation.
Temperature and humidity are the main factors which determine the character and extent of vegetation. An area with high temperature and high humidity supports evergreen forest, while an area with high temperature and low humidity supports thorny bushes
Answered by
0
1. Most studies of the potential for
natural habitat to improve
agricultural productivity have been
conducted in transformed, temperate
regions, but little is known of the
importance of agroecosystem
services in biodiverse developing
countries.
2. Natural vegetation may promote the
density and/or diversity of natural
enemies of crop pests, but the
strength of the effect varies, and few
studies directly measure concurrent
impacts on pest density. Considering
multiple pest species within the
same agroecosystem may help
explain why some pests are more
affected than others by landscape
complexity. Here, we investigated
multiple pest species (three species
of Tephritidae fruit fly, leaf galling
flies and pathogenic fungi Fusarium
spp.) and their enemies in cultivated
mango Mangifera indica, in north‐
eastern South Africa.
3. The density of generalist Tephritidae
fruit flies increased with distance
from natural vegetation during
harvesting months, and predation
rate of pupae sharply decreased
from ~50% at the edge with natural
vegetation to 0% at 250 m into the
crop. Parasitism rates of the cryptic,
gall‐forming fly increased with
proximity to natural vegetation, but
pest density was unrelated to
distance from natural vegetation.
Incidence of the fungal pathogen
disease increased with distance from
natural vegetation, possibly due to
decreased predation of commensal
mites.
natural habitat to improve
agricultural productivity have been
conducted in transformed, temperate
regions, but little is known of the
importance of agroecosystem
services in biodiverse developing
countries.
2. Natural vegetation may promote the
density and/or diversity of natural
enemies of crop pests, but the
strength of the effect varies, and few
studies directly measure concurrent
impacts on pest density. Considering
multiple pest species within the
same agroecosystem may help
explain why some pests are more
affected than others by landscape
complexity. Here, we investigated
multiple pest species (three species
of Tephritidae fruit fly, leaf galling
flies and pathogenic fungi Fusarium
spp.) and their enemies in cultivated
mango Mangifera indica, in north‐
eastern South Africa.
3. The density of generalist Tephritidae
fruit flies increased with distance
from natural vegetation during
harvesting months, and predation
rate of pupae sharply decreased
from ~50% at the edge with natural
vegetation to 0% at 250 m into the
crop. Parasitism rates of the cryptic,
gall‐forming fly increased with
proximity to natural vegetation, but
pest density was unrelated to
distance from natural vegetation.
Incidence of the fungal pathogen
disease increased with distance from
natural vegetation, possibly due to
decreased predation of commensal
mites.
Similar questions