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Providing evidence to improve practice

Action: Use weed mats to protect planted trees Forest Conservation

Key messages

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  • One replicated, controlled study in Hong Kong found no effect of using weed mats on thick-leaved oak seedling height.


Supporting evidence from individual studies


A replicated, controlled study in 1999-2002 in a degraded tropical forest in Hong Kong (Lai & Wong 2005) found no effect of using weed mats on thick-leaved oak Cyclobalanopsis edithae seedling height. Seedling height was similar in control and weed mat treatments after 37 months (control: 58; weed mats: 57 cm) and after 44 months (control: 83; weed mats: 85 cm). Fifteen oak seedlings were planted in each of four replicates (rows) of each control (no treatment after planting) and weed mats (0.4 × 0.4 m hessian cloth around each seeding) treatments. Seedlings were planted in June 1999 and observed for approximately 3.5 years.


Referenced papers

Please cite as:

Agra H., Schowanek S., Carmel Y., Smith R.K. & Ne’eman G. (2018) Forest Conservation. Pages 285-328 in: W.J. Sutherland, L.V. Dicks, N. Ockendon, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2018. Open Book Publishers, Cambridge, UK.