Pengaruh Kandungan Air Tanah Terhadap Pertumbuhan dan Transpirasi Semai Shorea leprosula Miq.

Abstract

The Dipferocarp forest ecosystems is habitat for hundreds of'hoI/sands 0/plant species, especially species ofDiplerocmpaceae. During fhe laslfew decades. DipterocaJpJorest have been exploited at unprecedented rates, and cOl/cem aboul the ecological and economical impacts is growing. As the most imporralll original free family, DipferOCOIpaceae will play all imporralll role ill rehabilitation of log over area. Considering the large number ofdipterocalp species alld the variety ofsite cOllditions in planting area. continued eJ}orts i/l research alld development all dipterocmp seedling production should be given high priority. Generally, plant growth researcher main(v siluly only on measurement ofheighl growth, diameter, !lumber ofleaves, brcmches. or biomass. 0" the other hand, eco- physiological needed to be considered, especially on seedling Slage. This reseach sludiedsome effecls ofdifferent soil moiSlure cOlllem to growlh oJShorea leprosula Miq. seedling. Research \lias carried 0111 in l1urselY oJ Tropical Rain Forest Research eenler Mulawarman University Samarinda. Completely RandomizedDesign (CRD) was used as research deSign. Growlh a/height and diameler, lIumber oJleaves, leaJare(l, and lrallspiration rale were collected as primmy parameters. Watering treatment carty highly Significant impact to height growth, number ofleaf transpiralioll rate; and Significant impactta diameter growlh andleafarea. Treatment ofl00% watering bring the bes! e}fect 10 all parameters.