Question

Третьеклассники посадили небольшой хвойный лес. Они тщательно за ним ухаживали: все тропинки заасфальтировали, каждую травинку выпалывали, выгребали и убирали всю опавшую хвою. Прошло время. Деревья перестали расти, и постепенно лес погиб. Почему?

Answer 1

Ответ:

опавшая листва, хвоя, трава после гниения возвращают почве питательные вещества, взятые ранее. Удаление хвои и травы из-под деревьев означает полную потерю питательных веществ, а это приводит к снижению плодородия почвы.

Объяснение:

Answer 2

Why did the small coniferous forest planted by third graders die?

The small coniferous forest planted by the third graders died despite their careful care and maintenance. There could be several reasons for the forest's demise. Here are some possible explanations:

1. Lack of proper soil preparation: It's possible that the soil in which the trees were planted was not suitable for their growth. Coniferous trees typically prefer well-drained soil with good organic content. If the soil lacked these qualities, it could have hindered the trees' ability to establish roots and access necessary nutrients [[1]].

2. Inadequate watering: Young trees require regular and sufficient watering to establish themselves. If the third graders did not provide enough water or if the watering was inconsistent, the trees may have struggled to survive. Insufficient watering can lead to dehydration and stress, making the trees more susceptible to diseases and pests [[2]].

3. Lack of sunlight: Coniferous trees generally require a significant amount of sunlight to thrive. If the forest was planted in an area with limited sunlight or if the trees were overshadowed by taller vegetation, they may not have received the necessary sunlight for photosynthesis and growth [[3]].

4. Pest infestation or diseases: Another possibility is that the trees were affected by pests or diseases. Insects, fungi, or other pathogens can attack and weaken the trees, making them more vulnerable to decline and death. Without proper pest control measures, the forest could have succumbed to these threats [[4]].

5. Competition from other plants: If the third graders did not adequately manage the surrounding vegetation, it's possible that other plants, such as weeds or invasive species, outcompeted the coniferous trees for resources like water, nutrients, and sunlight. This competition can hinder the growth and survival of young trees [[5]].

It's important to note that without more specific information about the conditions and care provided by the third graders, it is difficult to pinpoint the exact cause of the forest's demise. However, the factors mentioned above are common reasons for the failure of tree plantations.