INTERVIEW FOR CSE 2019
All ForumIAS members selected for CSE 2019 Personality Test must submit their details and DAF and register below to receive further instructions and guidance from ForumIAS. Click here to register now
INTERVIEW 2020 CHANNEL
ForumIAS Channel for Interview Preparation is now Active! Please join the channel by clicking here
We are hiring!

Why Savanna grasslands are not fertile ?

@All Gyaanis

@Babur @trying_tobawesm @Neyawn @Wolverine8997 @Etat @hummingbird

Why Savanna grasslands are not fertile ?

Easy question to start with ?
«1

Comments

  • Savannah grasslands are actually fertile enough but the constraints that they face due to which they have low productivity are-
    1. Irregular and low rainfall and that too in winters. Close to no rainfall in the dry season when plants need water the most.
    2. Frequent fires due to high temperatures that don't allow the saplings to grow.(only trees that grow in savannah have adapted themselves through evolution and are now fire resistant species)
    I hope it helps.
  • Savannah grasslands are actually fertile enough but the constraints that they face due to which they have low productivity are-
    1. Irregular and low rainfall and that too in winters. Close to no rainfall in the dry season when plants need water the most.
    2. Frequent fires due to high temperatures that don't allow the saplings to grow.(only trees that grow in savannah have adapted themselves through evolution and are now fire resistant species)
    I hope it helps.
    political instability and fragmentation among various countries has also led to low productivity in agriculture although there is huge potential if govt collaborate and also put in more scientific tecniques in agriculture
  • They are called Grassland , so how can you say they are not fertile ;))
  • guys got the answer attempt other 2 sets of geography questions I have recently posted on Mediterranean climate and Subtropical Ridge ?
  • They are called Grassland , so how can you say they are not fertile ;))
    i dont think grasslands are naturally fertile for crops..mostly extensive agriculture is practised in these areas with lot of external inputs..if u compare them to river valleys in china india they are not that fertile..
  • They are called Grassland , so how can you say they are not fertile ;))
    i dont think grasslands are naturally fertile for crops..mostly extensive agriculture is practised in these areas with lot of external inputs..if u compare them to river valleys in china india they are not that fertile..

    Fertility is not a relative concept. :)
  • Why Savanna grasslands are not fertile ?

    Savanna biome is found on the fringe of the topical rain forest regions and due the migration of the ITCZ these areas experience Prolonged wet and dry season . Such grassland biomes are found in south-central african countries like Kenya , Uganda, Tanzania ,Madagascar, north and south american countries like Venezuela ,argentina , northern australia .

    These area contains diverse type of soil and the main reason for the infertility of the area is the climate .
    In the wet season rainfall is high up to 180-200 cm and in dry season its almost nil .
    accompanied with the heat all year round the soil is subjected to intense leaching , and the nutrients are washed away very quickly during the rainy season .

    Also the high heat and ground moisture in the wet season intensifies the aerobic bacterial activity in the soil , which decomposes material far more quickly then they are produced.

    Forest fire in the dry season causes major damages to the vegetation , and prevents any humus to build up ,and simultaneously killing all the decomposes in the ground .

    But owing to abundance in rainfall the grassland in rainy season takes a completely different look , and attracts the wildlife and birds which migrates away during the summer.
    Only shrubs and trees grows in the region which have adapted to the change in weather as well as protection from forest fire like growing deep roots to gain access to ground water, or coating the seeds to protect from fire.

    With help of modern agri techniques like irrigation, fertilizers etc can bring change in the fertility , but primitive lifestyle of the people leaving here and political instability had created road blocks.
  • Savannah grasslands are actually fertile enough but the constraints that they face due to which they have low productivity are-
    1. Irregular and low rainfall and that too in winters. Close to no rainfall in the dry season when plants need water the most.
    2. Frequent fires due to high temperatures that don't allow the saplings to grow.(only trees that grow in savannah have adapted themselves through evolution and are now fire resistant species)
    I hope it helps.
    Savannah me winter rainfall kab se hone lagi?
    It's winter dry, summer rainy.
  • @TinTin pardon me please. Dry and wet season ka distinction likh raha tha, galti se winter rain likh diya. Yes you are correct, it is winter dry \m/
  • It's OK. We are here to learn from each other.
Sign In or Join to comment.

Welcome!

We are a secret self-moderated community for Civil Services preparation. Feel free to join, start a discussion, answer a question or just to say Thank you.

Just dont spread the word ;)

Sign in or join with Facebook or Google