https://www.reddit.com/r/arborists/comments/1axgs8z/do_trees_dry_out_land_or_keep_it_damp/
Do Trees Dry Out Land or Keep it Damp?
https://siwi.org/latest/more-trees-can-boost-groundwater-recharge/
More trees can boost groundwater recharge
The article was a game changer since the results indicated that many waterscarce tropical regions could, in fact, benefit from having more trees. Research carried out in Burkina Faso shows that when a certain number of trees are present, the amount of groundwater recharge is maximized. Trees turned out to be crucial for maintaining the large pores that characterize the soil in the area and which lead water into the ground. If there were no trees, the water would just run off or evaporate. But if the trees were too many, the water they consume would override the benefits they bring to soil improvement. “It is important to recognize that this issue is very complex. We are now continuing studies to understand different types of conditions – for example, the impact of different kinds of soils, trees, and climate management systems. With that knowledge, it will be possible to manage landscapes more wisely to protect both soils and groundwater recharge,” Ulrik Ilstedt says.
The new findings do not mean that the old way of looking at the relationship between trees and groundwater is necessarily wrong, only that it is not relevant everywhere. So far, most tree-water research has been carried out in northern, temperate regions where conditions are very different to the arid tropics. It is also more common to study forests than trees that are scattered in a landscape, which for example is the case when agroforestry is practiced. The “optimal tree cover theory”, suggested by Ulrik Ilstedt and others, argues that in tropical drylands there is an ideal level of tree coverage in the landscape that maximizes groundwater recharge. If that optimal tree-cover can be identified in specific contexts, and improved through better management, this could mean an important breakthrough in sustainable landscape management, according to Ulrik Ilstedt: “Better landscape management can be life-changing for hundreds of millions of people in water scarce areas. With improved access to water, women and children especially will lead healthier lives and have more time to earn money or get an education. And people everywhere can then enjoy the many benefits of trees,” he says.
This article originally appeared in Waterfront in 2020. Read full issue
The 2022 theme for World Water Day, set by UN Water, is Groundwater.
https://www.quora.com/Which-tree-helps-to-increase-ground-water-table
Moderate tree cover can increase groundwater recharge and that tree planting and various tree management options can improve groundwater resources.
Some of the trees that can raise ground water level are:
- Neem tree.
- Ashok tree.
- Tamarind/Imli tree and
- Jamun tree.
1. Neem tree.
2. Ashok tree.
3. Tamarind/Imli tree.
4. Jamun tree.
These above mentioned trees can help to hold the ground water level.
Thanks and regards.
Several tree species are known to help increase the groundwater table through their root systems and water uptake. Here are some notable examples:
- Willow (Salix spp.): Willows have extensive root systems that can help stabilize soil and promote water infiltration, benefiting groundwater recharge.
- Poplar (Populus spp.): Similar to willows, poplars are fast-growing trees with deep root systems that can draw up water and improve soil structure.
- Pine (Pinus spp.): Certain pine species can enhance groundwater recharge by allowing water to percolate through their needle litter, which helps maintain soil moisture.
- Oak (Quercus spp.): Oaks can contribute to groundwater recharge through their leaf litter, which improves soil quality and water retention.
- Moringa (Moringa oleifera): In arid regions, moringa trees can help improve soil moisture and promote water retention.
- Teak (Tectona grandis): Teak trees can also contribute to groundwater recharge, especially in tropical regions.
Planting these trees in strategic locations, such as along riverbanks or in watersheds, can help enhance groundwater recharge and improve local water availability. Additionally, maintaining healthy forests and tree cover is crucial for sustaining groundwater levels.
Usually all trees help the rain water from running away into streams. by letting the water drip slowly and get absorbed into the soil, which in turn help restore / increase the ground water level. The Neem and JAMUN tree is said too be the best along with Tree Ashoka, Indica Tamarindus. the PEPAL and the BANAYAN tree which is a wide spread tree. By not letting the mud get washed away, even normal grass helps in reducing the ( Eroding the soil ) and absorbing the water slowly in the earth. Jai BHARAT.
https://www.quora.com/What-are-the-possible-methods-to-restore-ground-water-table
Restoring the groundwater table is crucial for ensuring sustainable water resources, especially in areas facing depletion due to over-extraction, drought, or urbanization. Here are several methods that can be employed to restore the groundwater table:
1. Rainwater Harvesting
- Description: Collecting and storing rainwater for direct use or recharge.
- Methods: Rooftop collection systems, surface runoff collection, and percolation tanks.
2. Recharge Pits and Trenches
- Description: Excavated areas filled with permeable material to allow water to percolate into the ground.
- Application: Often used in urban areas where impermeable surfaces prevent natural infiltration.
3. Check Dams
- Description: Small barriers built across streams or riverbeds to slow water flow and promote infiltration.
- Benefits: Helps to recharge the aquifer and reduces soil erosion.
4. Percolation Tanks
- Description: Large depressions or reservoirs designed to hold water temporarily, allowing it to seep into the ground.
- Purpose: Enhances groundwater recharge in areas with high runoff.
5. Borewell Recharge
- Description: Directing excess surface water into borewells or recharge wells.
- Technique: Involves drilling borewells and using them specifically for recharge.
6. Wetlands Restoration
- Description: Restoring or creating wetlands to enhance natural groundwater recharge.
- Function: Wetlands act as natural sponges, absorbing and slowly releasing water.
7. Afforestation and Reforestation
- Description: Planting trees and vegetation to improve soil moisture and reduce runoff.
- Impact: Increases infiltration rates and promotes a healthier water cycle.
8. Sustainable Agricultural Practices
- Description: Implementing techniques like contour farming, cover cropping, and reduced tillage.
- Benefits: Enhances soil structure and increases water retention, leading to better groundwater recharge.
9. Managed Aquifer Recharge (MAR)
- Description: Deliberate enhancement of natural recharge processes through various techniques.
- Methods: Includes using stormwater, treated wastewater, or surface water to recharge aquifers.
10. Soil Moisture Management
- Description: Practices aimed at improving soil moisture retention.
- Techniques: Use of mulch, organic matter, and soil amendments to enhance infiltration and retention.
11. Regulation of Water Extraction
- Description: Implementing policies and regulations to limit groundwater extraction.
- Objective: Ensures that withdrawal rates do not exceed recharge rates.
12. Public Awareness and Education
- Description: Educating communities about the importance of groundwater conservation.
- Outcome: Encourages sustainable practices and community involvement in groundwater management.
Conclusion
Restoring the groundwater table requires a combination of these methods tailored to local conditions, hydrology, and community needs. Successful implementation often involves collaboration between government agencies, local communities, and environmental organizations.
https://www.quora.com/Do-planting-more-trees-help-groundwater-to-increase
Yes planting help in this it absorb the water and prevent flooding too and the tree remove his excess water by transpiration so is water vapour will help in precipitation (rain) and this will lead to increase water table
https://www.quora.com/What-are-the-possible-methods-to-restore-ground-water-table
Ground Water Table is the life for life. It's the best source of sweet water. It's becoming scarce and contaminated. The need of the hour is not only to restore it but also prevent its contamination.
Methods for recharging ground water table -
- First thing first, allow more rainfalls. If the current level of madness for development continues without appropriate thought and clean technology, the day is not far when all the resources and researches will be directed towards how to convert seawater into drinking water and how to prevent mankind from the onslaught of overflowing seawater. The best ways to get good rains is to stop tree felling and to plant more.and more trees. Afforestation to be followed with mission and zeal. It will serve three purposes - to attract more rainfall, to cleanse air and to regulate the temperature.
- Save our ponds. The small water bodies present in and around habitation have to be supported and prevented from extinction. Trees are one solution, plant more trees around ponds, prevent siltation. The ponds shouldn't be used as receiving drains.
- Establishment of green lungs of appox 50000 sq ft for every 2 kms of area. It will again serve all the three purposes of cleaning the air, attracting more clouds and regulating temperature.
- All the high-rise building can adopt water harvesting methods as they het lots of water during the rainfall. If properly follow the water harvesting techniques, the can have sufficient water which can serve them for at least 6 months.
- Recycling of water. Not all water is needed for drinking. The used water can be recycled for non drinking purposes. The recycling technology is very cheap and simple. It will save millions of gallons of water every year.
- The development of crop varieties which need less quantity of water. There are crops where water requirement is huge. There is a need for more research in this field. In the meantime, the farmers have to be educated about the methods like drip irrigation which saves lot of water.
- Stop dams are other simple and very cheap ways to recharge water table. Every rural area can make lots of small stop dams which can be sufficient for their consumption plus it will keep supporting the water table. The wells may have pits near by which can store water for recharging them.
- A cannal channel system can be developed in such a way that the water is drained out from river, circulated in 8/10 kms long channels for purposefully recharging water table and finally the channel is again drained out in the same river. It will cover more area of circulation, will contact more area so as to allow more water to percolate inside the soil.
- These we're the positive ways to improve water table. However, negative wYs have to be adopted to prevent water waste. The chemical insecticide used as fertilizers must be stopped immediately. It contaminates ground water.
- Desiltation of rivers, cleaning of rivers to be done so that they carry more water for recharging water table.
https://kids.frontiersin.org/articles/10.3389/frym.2021.589362
Can Trees Help Put Water Back Into the Soil?
An excerpt from the article:
How Trees Help to Recharge Aquifers
Plant roots take up lots of water from the Cerrado’s aquifers during the dry season. But they also help to put lots of water back into these aquifers later.
Read more here: https://kids.frontiersin.org/articles/10.3389/frym.2021.589362
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