Land, Water, Soil & Wildlife - Natural Resources Video Lecture - Class 9 | Best Video for Class 9

the topic today is land soil water
natural vegetation and Wildlife
Resources geography Class A in the
previous chapter we studied about
different kind of resources now in this
chapter we are specifically going to
study about the natural resources first
of all we should define what is the
natural resource a natural resource is a
resource which is he directly derived
from nature now nature gives us many
kind of resources like the topic itself
says land soil water vegetation wildlife
all these resources which are provided
by nature are then defined under there
is definition of natural resources now
to begin the chapter with we are going
to study all these resources one by one
so let's start with the first resource
land now to talk about land here what is
line land is the surface or the ground
where we stand where all the vegetation
grows where all the wildlife States so
land describes us a very impulsive very
important source provided by the nature
now as we are all aware that in on our
earth more than 70% of the portion is
covered with water and only 30 and only
30 percent of the area is land
now from this 30 percent area of the
land from the 30 percent land areas 90
percent of world's population occupies
roughly 30 percent and the rest 70
percent is sparsely inhabited by 10
percent population for example like
areas where it is very hard to live on
mountain areas areas like then where we
have dense forests where like we have
desert areas where it is not easy to
survive there people usually do not
prefer to live so we 30% of the land is
occupied by ninety percent of the
population the rest in person
is sparsely inhabited because of the
different living conditions people
usually do not reference to live in
areas where the facilities are not
available or where it is difficult to
survive
so now areas like Antarctica Africa
forests of South America etcetera are
regions where life is not so easy so
people do not prefer to live in these
regions so that is why is a 30% line out
of the 30% total land available on the
earth is inhabited by people that is the
people live on this region now this
distribution of land is we can see that
very uneven now there are regions like
the subtropical regions or the mid
latitude zones where most of the
population survive lives because there
is the presence of arable land there is
presence of water so people usually live
in these areas whereas as we move
further to the latitudinal regions the
people or the population we can say
decreases with the increase in the
number of the latitude because as we
move up the temperature falls down and
it gets extreme to live in these regions
so moving on is the land-use pattern
next heading here in this land use
pattern I would like to show you a table
which can give you an idea how land is
used in different countries in different
areas here we are taking example of
three countries India America and Japan
now as you can see in this table that
when we come to India we see the kind in
50% of the land is engaged in cropping
or agricultural activities 4% in
pastures 22 percent in forest and 17 for
other units now if we come to
in country like Japan the the number of
Falls occupying the land area is 67
which is far more in comparison to India
now then again we have the comparison
with American countries that they have
21 percent area engaged in agriculture
26 percent area engaging pastures and 32
percent of their aan forests now these
differences occurs because of different
conditions prevailing in these countries
also now if we talk about Japan we all
know that the land area in Japan is very
less but still they have evolved to
technology that they are encouraging the
you the spread of plantation and then
encouraging the forest area in these
regions if we talk about America it
already has a very wide amount of light
area so it can plus the population here
is very less so it can divide the
division here we can see is almost even
but when we talk about India here the
division is kind of uneven we have the
partial land of only 4% here but on the
contrary we have the highest population
of cattle in our country also which is
then again dependent on this 4 percent
of partial and only also the forest area
which is supposed to be 25 percent is
less and it is only ready to person so
here we can see that the land-use
pattern in different areas is very
different then these differences
occurred because of different conditions
prevailing in the country and different
speed of development of these countries
now in the land-use pattern we can also
add about how the land use has changed
from the past to the present condition
in the earlier period the land was
basically used for agriculture only and
the land was divided in private line and
community land private land was land
which was owned by a person and
community land was the land which was
owned by the voice community now with
the development with the increase in
population the number of community lands
started decreasing because
the demand of the people started rising
and to fulfill that demand people
started occupying the areas in the
community land so slowly and gradually
the community land started decreasing
and also with the increase of the demand
the intensity of the use of the land
also increased and urban area started
evolving up and rural area started going
down but still the basic requirements
were failed by the rural areas only and
today the vast changes in the land use
pattern also reflect the cultural
changes in our society with the excess
use of land we have found a lot of
effects EXOR the adverse effects on land
also now what are the adverse effects is
that the land is facing here because of
the excess use the distribution of land
is here uneven so the use could not be
done in a proper manner if the
distribution is even then we can say
that the use can be in a very proper
manner but here the distribution of land
in to definitely use this is very uneven
so this uneven distribution is causing a
lot of adverse effect on the use of land
only now here we are emphasizing on
building of all factories roads and the
commercial things whereas we should be
where we are using the rich land not
against it for Thailand for these
purposes which is not beneficial for
land also now land because of fixed
resource it is not going to increase or
it is not going to decrease now what is
required here is that we should be using
land in a very proper manner also
because of this uneven distribution
there are other problems like shortage
of cropland soil erosion degradation of
land because of excess use of pesticides
and fertilizers so these are the adverse
effects that effects that the land is
because of uneven on we can say improper
utilization now now what will be the
consequences of this uneven or we can
say disturbed use of land now as a
consequence we can say that the quality
of land will decrease also we see that
the nature is going to show its adverse
effects in the form of landslides and
the soccer the quality of the soil is
going to degrade
so all these adverse effects are
ultimately going to affect the human
beings only so what is required here
that with the limited availability of
land we should be using it in a proper
manner and utilizing all its capability
to its exchange and not spoiling its
quality now moving on to the other
natural resource is soil soil is a very
important resource as we all know that
because the soil provides us all the
vegetation which we which are required
by human beings
and it also is called mother soil is
termed as mother because it gives us all
our it fulfills our all our requirements
now the soil is closely linked back to
land landfill usually determine what
will be the quality or the type of the
soil is going to be now first of all we
are going to study the definition of
soil a thin layer of grainy substance
covering the surface of the earth is
called or its down - soil now soil is
made up of organic matter that is it
contains humans plus minerals and
weathered rocks or grainy particles of
rocks and stones now in the formation of
soil a lot of factors get a minor effect
the quality or the type of the soil
first of all here
the soil we are going to study about
what are the major factors that affect
soil formation we can explain this topic
with the help of a chart the first
factor that affects the formation of
soil is the parent rock as we all know
that soil comes out from weathering of
rocks only and the type of the dog
determines what will be the car type of
the soil baby if the rock suppose is
igneous information so it will produce
black soil and suppose if the dog is
shale then if we produce k if the rock
is sandstone then it may produce and
sandy grains so the condition or the
type of the parent rock determines the
color texture mineral content and
chemical properties of soil the second
factor that affects permission of
Soilers the relief relief here is
referred as the soil which we are
talking about is present at what
altitude at what height or in what
region a worktop topography is found in
that region if it is plain it is implied
- it is mountain areas mountain then
again at the what height we are talking
about of the soil so all these factors
all these little features they affect
the quality of the soil or the type of
this soil if suppose we are talking
about soil and plain region so the soil
will be eroded or weathered a lot of
time by the bend and we can say labour
or different sources but if the soil is
found in mountain region it is usually
grainy or it is rocky with a hard
texture so the relief also then decides
what will be the condition
what will be the type of this soil the
next factor that affects the formation
of soil is the climate the climate is a
very important factor because in the
climate becomes temperature rainfall
these kind of grammatical activities
which affect this weathering and erosion
of the soil now if suppose NRI there is
a region where there is a lot of
rainfall then the soil will be turned to
a lot of weathering and will be usually
very clean your we can save much chigney
material gives region may but if there
is a region where there is very high
temperature and very low rainfall then
in that region we usually find sandy
soil like we can take the example of
Rajasthan the next factor that affects
the formation of soil is flora fauna and
microorganism all in a single word we
can say them humans which is present in
the soil the amount of you must present
in the soil will affect will decide the
fertility of the soil the more amount of
humans will give more air ability to the
soil and then the soil will be more for
time and the last factor is time of
course time is a very important factor
as we all know that it takes a lot of
time to in the formation of soil and
form forming a very thin layer of soil
it takes a lot of millions and millions
of years so the world of the soil will
be then will find more of the qualities
in that soil also so time plays a very
important factor in the determination of
thickness of the soil and the quality of
the Sun now as we studied in land also
that
is degraded because of their it's excess
use the same condition is happening with
soy in here sorry is a very important
part of land cause it is found on land
so because of excess use of soil or we
can say wrong use of soil the soil is
also getting degraded or getting low in
quality
now the degradation of soil is happening
because of many activities the first is
as we study in land also excess use of
fertilizers and pesticides is giving bad
we can say if is given is not adding to
the fertility to the land or it is
degrading the quality of the land also
the erosional work of nature and human
activities also is also degrading the
condition of the soil by nature the
ocean is done due to the rainfall most
of the soil or the upper layer of the
soil is washed off from the surface and
has washed into the water bodies and
once the soil is reaches has reached the
water bodies and the bottom of whatever
it is it is of no use for us and also
human activities we can say that because
of excess irrigation the soil tends to
get flowed out from the farm areas and
the most fertile the top layer it gets
eroded now next the factor of
degradation here is deforestation
deforestation as we all know because of
excess cutting of trees in the forest
the soil is getting loose and because
there are no trees to who is the soil
the soil is getting eroded due to
different sources of nature also
colonization of the soil that is the
salt content of the soil is increasing
because of over irrigation the water we
are giving to the crops or in the farms
is the Salah
it is degrading the quality of the land
so this is how we can say that the
degradation of soil is happening what is
it go area is conservation of soil for
soil conservation the first and foremost
thing that needs to be done is of course
of our station that is planting more and
more plants also the conservation of
soil in different region can be done
with different methods also here we are
going to show you what will be the
different methods in different region
first we'll talk here about in any areas
in Haiti agents first is the first
method that can be used as shifting
agriculture that is moving farms this
after the usage to different areas
intercropping interlocking is mixing
different kind of crops in one farm it
gives a more hold to the soil terrace
farming that is growing of crops on the
level steps constructed on hillsides we
can show this like this also that
suppose it is not really region 2 we can
grow crops on little steps like which is
easier to irrigate and use control
flowing control knowing is blowing with
the contours of DL only this again can
be shown within with a diagram instead
of flowing this way against this load we
should flow the land like this so that
it is easier to firstly flow the land
and then hold the crop and it will also
facilitate an irrigation also contour
barriers and block dance
in this control forming we can also add
rocks as performing a man-made a barrier
to hold the water or irrigation which is
done by human beings to lead to
degradation of our flowing of the soil
away from the mountain region or the
farm or the area so when we are doing
irrigation in this region these rock
dams will hold the soil and will not
allow it to flow out the next is in
plane region in plane region methods
that can be used is first strip cropping
that is using or planting different
crops on parallel narrow strips it will
help in welding the soil and it will
also give lesser space for to the soil
to get loaded when we have plants or
crops growing at such close distances
then it there will be less space for
soil to get eroded by the mediums of
water and wind up when again the second
method that can be used in pain areas is
binding of fields that is if we provide
a boundary to the field then there will
be less possibility that the soil which
is inside the boundary is going to get
eroded whereas if we have open fields
without any boundaries and these
boundaries can be natural also made of
wood or other things then if we have
will bind foundries in the face then
these boundaries will hold the soil and
may not allow it to get eroded from that
area off of that field the next method
here is mulching in the mother method of
merging mulching the bare ground between
plant is covered with a layer of
organic matter like stock or sometimes
they also used
gunny bags which are full of store he
was a soil which is then kept in the gap
between the plants so when we put we are
putting this job or he's gonna bags in
that gap
they hold or they put a pressure on the
soil and well they do not allow the soil
to get eroded later on this show gets
degraded in the soil only and it
provides fertility to the soil so this
mulching method is also very interesting
and it also help in stopping a
degradation of the soil and in the
lastest coastal and added religions in
coastal and arid region logos of trees
are planted which are known as shelter
bed to protect the soil from getting
eroded because these trees they are
planted in this region they also are
planted in the direction from where the
people know that the wind is going to
blow are they the wind usually blows so
the trees are mounted against the wind
root so that the erosion can be stopped