Similar to a sieve, the willows allow water to flow through but trap the sediment back. Within a year, these structures can trap up to 10cm of sediment. Over time, this increases as the willows become more established and more sediment can be kept back. After 20 to 30 years, the vegetation will have complete cover and sediment erosion is almost completely stopped.
Who will help maintain our environment when the word reaches 9 billion people? Get your students engaged by exploring a career in soil and water conservation through this web quest.This would be a great sub planned activity, station activity, or homework assignment or project.
The best way for Self-Watering Use 2-litre bottles with Aqua Cones to keep your plants and flowers watered. Aqua Cones work with any soil type because they were designed with punch-out holes near the top for sandy soil, near the middle for loam, and near the bottom for heavy soils. The Aqua Cones collects rain and stores it so that it can provide continuing water to your thirsty plants.