A comparative vegetational analyses between natural and disturbed grasslands

• Main Author: Valencia, Romulo Z.
• Format: text
• Language: English
• Published: Animo Repository 1997
• Subjects: Grasslands; Vegetation boundaries; Plant communities
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/1475
• Institution: De La Salle University

Vegetation analyses in a natural grassland in Mt. Palay-palay, Cavite and in a disturbed grassland in Pulilan, Bulacan were conducted. A line intercept measuring 100 m in length by 5 m in width was laid out along the southeast orientation in the natural grassland and northeast orientation in the disturbed grassland. The species found in the natural grassland were: Saccharum spontaneum, Pennisetum polystachyum. Cardiospermum halicacabum and Chromolaena odorata. On the other hand the species found in the disturbed grassland were: Axonopus compressus, Amaranthus spinosus and Lindermia crustacea. The following ecological parameters were measured: density, relative density, dominance, relative dominance, frequency, relative frequency, coverage, relative coverage and importance value. In the natural grassland, the species Saccharum spontaneum had the highest density (40.8%), relative density (50.8%), dominance (17.24%), relative dominance (44.7%), frequency (100%), relative frequency (27.4%), coverage (.36), relative coverage (27.27%) and importance value (35.16%). In the disturbed grassland the species Axonopus compressus had the highest density (8.4%), relative density (38.5%), dominance (7.68%), relative dominance (55.7%), frequency (98%), relative frequency (35%), coverage (1.3%), relative coverage (64.3%), and importance value (46%). The species observed in the natural grassland were taller and the number of species was greater than that in the disturbed grassland.