Responses of herbaceous plants to available understory light in chronosequence forest rehabilitation stands

Ismail A., . and Ainuddin A. N., . and Ahmad Makmom A., . (2011) Responses of herbaceous plants to available understory light in chronosequence forest rehabilitation stands. [Proceedings Paper]

Restoration and rehabilitation aim at re-establishing the selfsustaining ecosystems and a sufficient resilience to repair the ecosystems following natural or human disturbance. This study was carried out to understand the response of herbaceous understory vegetation to changes in chronosequence forest rehabilitated stands. Four rehabilitated stands with plot of 30 m x 30 m were established in each 3 age stands 19 16 4 year while a 20 m x 20 m plot was established for 10 year stand. In 30 m x 30 m plots there were 16 grid points while 20 m x 20 m plots had 9 grid points. In each plot a grid of 10m x 10m was established and only 1 grid point in the middle subplot marked static with 3m and 8 m height PVC pipes with measurement done using Li-Cor 100 and 2 sensors for this vertical PAR measurement. A mast was erected in the middle of the stand. Measurements were made hourly from 6 a.m until 6 p.m. in September October and December 2009. Herbaceous plants were surveyed in the plots. By focusing on the grasses ferns and shrubs we found that short-lived small and invasive species are important components to UPM-Mitsubishi forest rehabilitation ecosystems facilitating the formation of abundant herbaceous and affecting co-occurring perennial shrub light availability and function. The presence of these herbaceous also significantly affected by soil moisture light penetration and canopy structure.

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Abstract

Restoration and rehabilitation aim at re-establishing the selfsustaining ecosystems and a sufficient resilience to repair the ecosystems following natural or human disturbance. This study was carried out to understand the response of herbaceous understory vegetation to changes in chronosequence forest rehabilitated stands. Four rehabilitated stands with plot of 30 m x 30 m were established in each 3 age stands 19 16 4 year while a 20 m x 20 m plot was established for 10 year stand. In 30 m x 30 m plots there were 16 grid points while 20 m x 20 m plots had 9 grid points. In each plot a grid of 10m x 10m was established and only 1 grid point in the middle subplot marked static with 3m and 8 m height PVC pipes with measurement done using Li-Cor 100 and 2 sensors for this vertical PAR measurement. A mast was erected in the middle of the stand. Measurements were made hourly from 6 a.m until 6 p.m. in September October and December 2009. Herbaceous plants were surveyed in the plots. By focusing on the grasses ferns and shrubs we found that short-lived small and invasive species are important components to UPM-Mitsubishi forest rehabilitation ecosystems facilitating the formation of abundant herbaceous and affecting co-occurring perennial shrub light availability and function. The presence of these herbaceous also significantly affected by soil moisture light penetration and canopy structure.

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Item Type:	Proceedings Paper
Additional Information:	2 tables; 12 ref. QH 541.5 R27 I61 2011
AGROVOC Term:	Forest rehabilitation
AGROVOC Term:	Herbaceous plants
AGROVOC Term:	Soil moisture
AGROVOC Term:	Light
AGROVOC Term:	Forest canopy
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11576

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