ANALISIS VEGETASI LANTAI SEBAGAI PENAHAN LIMPASAN AIR DI SEKITAR MATA AIR
Abstract: Water resources is
essential for life. One of potential source is ground water springs. Floor
vegetation act as rainwater retention,therefore rainfall does not become runoff
instead infiltrate as ground water that is important.The purpose of this study
was to analyze of floor vegetation (growth form shrubs, herbs, and grasses)
around springs and study its role in the retention of water infiltration. The study was conducted in
June-October 2013 in Umbul Nila’s spring, Tulung, Klaten, Central Java and
Mudal’s spring, Purwosari, Gunungkidul, D.I.Yogyakarta. The simple random
sampling of 1m x1m quadrate method was used, for vegetation analyzes with a 15
samples of each springs. The results of analysis in Umbul Nila’s springs, was
obtained 8 families, 17 species of vegetation floors and 5 families with 18
species around Mudal’s spring. The results of calculation, the highest INP
value of 5 species vegetation in Umbul Nila: Heliotropium indicum 33,5%, Bidens
pilosa 32%, Ischaemum triticeum 30,9%, Paspalum conjugatum 16,7%, dan Eleusine
indica 11,6%. whereas in Mudal:
Ischaemum triticeum 28,6%, Elephantopus scaber 27,7%, Paspalum conjugatum 26%,
Chromolaena odorata21,4%, Flemingia macrophylla16,9%. Diversity index (H ') in
Umbul Nila (0,90) with low category and Mudal (1.02) includ of medium category.
An index of similarity in both locations by 45,71%, meaning that a low floor
vegetation similarity. The results of infiltration rate experiment using rain
simulation, showed that the ability of water infiltration in Umbul Nila on
herbs-covered land was 73% is higher than the land covered with grasses,
shrubs, and base land. While in Mudal, shrub land covered by 97.17% compared to
the land covered herbs, grasses, and base land.
Penulis: Fatimatuzzahra
Kode Jurnal: jpbiologidd140218
