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한국생태학회 / v.19, no.5, 1996년, pp.453-463 
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이소적 두 수종의 수분관계 일변화
( Diurnal changes of Tissue Water Relations in Two Allopatric Tree Species ) |
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| 초 록 |
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| Diurnal changes of microclimatic conditions and tissue water relations were measured at two sites where Carpinus laxiflora and C. cordata were allopatrically distributed. The microclimatic conditions at a site where C. laxiflora was distributed produced severe water stress condition during summer months. Daily maximum temperature reached $30.4^circC$ and the highest vapor pressure deficit was 1.31 KPa when 13 rainless days were continued. During this period soil water content decreased to below the field capacity even at a depth of 20 cm and xylem pressure potential also decreased to 2.04 MPa. However, turgor potential was maintained more than 0.4 MPa. Patterns of stomatal conductance were changed with evaporative demand and soil water availability. On the other hand, microclimatic conditions at a site where C. cordata was distributed were moderate water strees condition compared with those at a site C. laxiflora was distributed. Though soil water content was maintained above field capacity C. cordata showed a remarkable decrease in turgor potential and stomatal conductance throughout the experiment. These results indicate that there is a difference in habitat characteristics between the two species and C. laxiflora is more resistant than C. cordata to water stress. |
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| 키워드 |
| Field capacity;Habitat characteristics;Soil water content;Stomatal conductance;Turgor potential;Xylem pressure potential; |
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The Korean Journal of Ecology / v.19, no.5, 1996년, pp.453-463
한국생태학회
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611919967378)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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