for sustainable soil, water, agroecosystem and biodiversity conservation
https://cdn.permaculturenews.org/files/keyline_design_course_august_2012_b.pdf
http://yeomansplow.com.au/8-yeomans-keyline-systems-explained/ :
There are two facets to Keyline.
The FIRST teaches how soil fertility can be rapidly, permanently and cheaply enhanced.
The SECOND teaches how the topography of the land can be best utilized to build that fertility and additionally how to plan the farm layout.
http://crkeyline.ca/what-is-keyline-design/
http://burlingtonpermaculture.weebly.com/uploads/4/2/8/9/4289790/keylinehandout2011.pdf
https://soilandhealth.org/wp-content/uploads/GoodBooks/The%20Keyline%20Plan.pdf
https://en.wikipedia.org/wiki/Keyline_design
https://landbyhand.org/keyline-design-p-a-yeomans/
