Chena cultivation

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Chena is oldest cultivation method in Sri Lanka, it's far back as more than 5,000 years. (Before the Anuradhapura Kingdom)[1] This is an extreme level of forest destruction resulting in almost complete destruction of the natural plant diversity.[2] it the dry zone, the recovery of a chenea plot proceeds through various stages of succession, (active chena, abandoned chena, chena re-growth, scrub with pioneer three species, scrub with secondary tree species, secondary forest, secondary forest with primary tree species and finally, the climax or steady-state forest. The smooth progress of their recovery process depends on the absence of further disturbances, such as a re-cultivation of active or abandoned chena plots, fire and human development activates such as settlements. However, in the wet zone, the process of vegetational succession and recovery take more complex routes. In moderately degraded site where the soil surface is nit servery exposed, vegetation succession can be relatively rapid with the appearance of pioneer species and then secondary species which are eventually replaced by primary species, if left intact. In contrast, highly degraded sites, (e.g:- exposed to elements of weather, the vegetation will nit recover up to the level of a forest, but remain as fenlands or grasslands for a very long time. The sensitive Red-Yellow podzolic soil, on exposure, transforms into a hard laterite and becomes impoverished due to erosion of its human layer.[3] This edaphic transformation is least conductive to the appearance of afforest vegetation, but usually supports inly a low-stature vegetation such as fenland dominated by kekilla (Dicrnopteris linearis)[4]

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References[]

  1. ^ "Chena Cultivation in Sri Lanka | Traditional Agriculture Practices of Sri Lanka". www.dilmahconservation.org. Retrieved 2021-03-06.
  2. ^ "Chena cultivation as traditional slash and burn practice". www.geo.fu-berlin.de. 2020-06-10. Retrieved 2021-03-06.
  3. ^ C.S. Weeraratna and P.A. Weerasinghe (2009). Agriculture of Sri Lanka. Dehiwala: C.S. Weeraratna. pp. 9–10. ISBN 978-955-51646-0-3.
  4. ^ "SRI LANKAN WOMEN AND MEN AS BIORESOURCE MANAGERS". www.fao.org. Retrieved 2021-03-06.
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