Arizona's Declining Groundwater

Would semi-circular bunds help fight desertification in Arizona and along the Colorado River and in the Southwestern US, as they do on the Sahel?

From https://news.ycombinator.com/item?id=39927538 :

> Agricultural Bunds (and buried unglazed water vessels) would probably work in NM, too; but which agricultural resources can process bunds instead of rows?

From https://news.ycombinator.com/item?id=40361034 :

> Water bunds look like they work to prevent water from flashing off, but probably initially disturb the mycorrhizae in the topsoil:

Semicircular bund: https://en.wikipedia.org/wiki/Semicircular_bund

> "Inoculating soil with mycorrhizal fungi can increase plant yield: study" (2024) https://news.ycombinator.com/item?id=38526579#38527264

From https://news.ycombinator.com/item?id=43190710 :

> Half Moon Bunds look like they are working to regreen the Sahel. Bunds would require different farm machines than rototilling tractors that cause erosion.

> "Mastering the Art of Half Moon Bunds" https://youtube.com/watch?v=XyH6dFlv9dk

> Andrew Million's light board videos are a great resource, as a software dev with no real experience in hydrological engineering for sustainable agriculture.

> "Inside Africa's Food Forest Mega-Project" https://youtube.com/watch?v=xbBdIG--b58&

Desert Control now has offices in Arizona. They specialize in water bags that catch silt for use as fertilizing soil amendments.

Mycorhizzae are essential to healthy soil. Plant residue can keep moisture in soil that you're trying to reestablish Mycorhizzae in so that roots establish so that the soil holds water. Geotextiles can also keep moisture in soil.

Chitosan-Alginate and/or plasma-fluffed hemp aerogel would make great geotextiles for erosion control, soil remediation, water bags, gauze, and diapers.

I've seen videos about how it's actually legal and recommended to cut the curb to harvest rainwater from the street for landscaping in Texas and Arizona now FWIU?

	▲	westurner 13 hours ago \| parent [-]
		Does the Miyawaki method also work in the Southwest; planting a whole grove of things that co-respirate and share roots? > Akira Miyawaki and the Miyawaki method of forest cultivation for reforestation to fight desertification by regreening: https://en.wikipedia.org/wiki/Akira_Miyawaki Pocket forest: https://en.wikipedia.org/wiki/Pocket_forest : > The area to be planted is first covered with a layer of cardboard which is then covered with 3–6 in (7.6–15.2 cm) of compost or wood chips and allowed to acclimate to local moisture conditions for several months. The covered area is then planted with year-old plant nursery saplings spaced approximately 2 ft (0.6 m) apart. The entire surface area should be planted at the same time with a variety of native species so no saplings of the same species are adjacent to each other. Watering is unnecessary for native plants acclimated to the local environment; although watering for the first few years after planting, and during drought periods, will reduce mortality of individual plants [...] > Three is the minimum number of different species of nursery saplings for planting a pocket forest