permaculture       
noun [ U ] uk/ˈpɜː.mə.kʌl.tʃər/ us/ˈpɝː.mə.kʌl.tʃɚ/
 (对环境影响小的)持久农业
systems for growing crops, plants, etc. that cause little damage to the environment and can therefore continue for a long time
  Permaculture aims to develop a landscape that will be self-sustaining and productive for generations. 持久农业的目的是发展一种能够世世代代自我维持、富有成效的景象。 
 A permaculture garden can be as small as a balcony or many hectares in size. 一个持久农业园可以小到一个阳台,也可以大到占地很多公顷的土地。 
 - More examples
 - When practical permaculture principles are explained to farmers, gardening is transformed from a task to a craft.
 - He discovered an agricultural technique called permaculture that creates self-sustaining gardening designs.
 - But permaculture is all about the laid-back, low-maintenance approach, including extensive use of self-seeding plants and perennials.
 - Ultimately, permaculture offers a vision of how humanity can participate in rather than damage our planet's ecosystems.