什么是土壤土壤是位于地球陆地表面能够生长植物的疏松表层,是联系地球大气圈、生物圈、水圈、岩石圈的重要圈层,是陆地生态系统中的重要组成部分,是人类赖以生存的重要自然资源。土壤是怎样形成的?土壤是在自然因素和人为因素作用下形成的。自然因素包括生物、气候、母质(或岩石)、地形和时间。母质是矿物岩石风化的松散多孔的固体颗粒物和可溶性 What is soil? Soil is a loose surface layer that can grow plants on the earth’s land surface. It is an important circle that connects the earth’s atmosphere, biosphere, hydrosphere and lithosphere. It is an important part of the terrestrial ecosystem and the human being’s survival Important natural resources. How the soil is formed? The soil is formed by natural and human factors. Natural factors include biology, climate, parent material (or rock), topography and time. The parent material is mineral rock weathered loose porous solid particles and soluble