江西师范大学学报（自然科学版）
江西師範大學學報（自然科學版）
강서사범대학학보（자연과학판）
JOURNAL OF JIANGXI NORMAL UNIVERSITY（NATURAL SCIENCES EDITION）
2014年
6期
645-649
,共5页
沉水植物%水深%苦草%黑藻%光合作用
沉水植物%水深%苦草%黑藻%光閤作用
침수식물%수심%고초%흑조%광합작용
submerged plant%water depth%vallisneria natans%Hydrilla verticillata%photosynthesis
以沉水植物较为丰富的洪湖凹沟子作为采样区域，利用水下调制荧光仪研究洪湖常见的2种高耐污、高吸污水鳖科沉水植物黑藻（ Hydrilla verticillata（ L. f.）Royle）与苦草（ vallisneria natans（ Lour.）Hara）分别在100 cm及50 cm水深条件下光合作用的差异.结果表明：在100 cm水深条件下，当PAr值稳定为342μmol·m-2·s-1时，黑藻（Hydrilla verticillata）的ETr值趋近25.10μmol·m-2·s-1，而苦草（vallis-neria natans）的ETr值趋近10.10μmol·m-2·s-1；当PAR渐强时，黑藻在PAr值为219μmol·m-2· s-1时其ETr达到峰值21.76μmol·m-2·s-1，苦草在PAr值为515μmol·m-2·s-1时其ETR达到峰值12.65μmol·m-2·s-1；在50 cm水深条件下，当PAr值稳定为342μmol·m-2·s-1时，黑藻的ETr值趋近26.20μmol·m-2·s-1，而苦草的ETr值趋近11.90μmol·m-2·s-1；当PAr渐强时，黑藻在PAr值为219μmol·m-2·s-1时其ETr达到峰值25.27μmol·m-2·s-1，苦草在PAr值为1042μmol· m-2·s-1时其ETr达到峰值4.80μmol·m-2·s-1.综上所述，在100 cm或50 cm水深条件下，黑藻的光合作用强度皆强于苦草.
以沉水植物較為豐富的洪湖凹溝子作為採樣區域，利用水下調製熒光儀研究洪湖常見的2種高耐汙、高吸汙水鱉科沉水植物黑藻（ Hydrilla verticillata（ L. f.）Royle）與苦草（ vallisneria natans（ Lour.）Hara）分彆在100 cm及50 cm水深條件下光閤作用的差異.結果錶明：在100 cm水深條件下，噹PAr值穩定為342μmol·m-2·s-1時，黑藻（Hydrilla verticillata）的ETr值趨近25.10μmol·m-2·s-1，而苦草（vallis-neria natans）的ETr值趨近10.10μmol·m-2·s-1；噹PAR漸彊時，黑藻在PAr值為219μmol·m-2· s-1時其ETr達到峰值21.76μmol·m-2·s-1，苦草在PAr值為515μmol·m-2·s-1時其ETR達到峰值12.65μmol·m-2·s-1；在50 cm水深條件下，噹PAr值穩定為342μmol·m-2·s-1時，黑藻的ETr值趨近26.20μmol·m-2·s-1，而苦草的ETr值趨近11.90μmol·m-2·s-1；噹PAr漸彊時，黑藻在PAr值為219μmol·m-2·s-1時其ETr達到峰值25.27μmol·m-2·s-1，苦草在PAr值為1042μmol· m-2·s-1時其ETr達到峰值4.80μmol·m-2·s-1.綜上所述，在100 cm或50 cm水深條件下，黑藻的光閤作用彊度皆彊于苦草.
이침수식물교위봉부적홍호요구자작위채양구역，이용수하조제형광의연구홍호상견적2충고내오、고흡오수별과침수식물흑조（ Hydrilla verticillata（ L. f.）Royle）여고초（ vallisneria natans（ Lour.）Hara）분별재100 cm급50 cm수심조건하광합작용적차이.결과표명：재100 cm수심조건하，당PAr치은정위342μmol·m-2·s-1시，흑조（Hydrilla verticillata）적ETr치추근25.10μmol·m-2·s-1，이고초（vallis-neria natans）적ETr치추근10.10μmol·m-2·s-1；당PAR점강시，흑조재PAr치위219μmol·m-2· s-1시기ETr체도봉치21.76μmol·m-2·s-1，고초재PAr치위515μmol·m-2·s-1시기ETR체도봉치12.65μmol·m-2·s-1；재50 cm수심조건하，당PAr치은정위342μmol·m-2·s-1시，흑조적ETr치추근26.20μmol·m-2·s-1，이고초적ETr치추근11.90μmol·m-2·s-1；당PAr점강시，흑조재PAr치위219μmol·m-2·s-1시기ETr체도봉치25.27μmol·m-2·s-1，고초재PAr치위1042μmol· m-2·s-1시기ETr체도봉치4.80μmol·m-2·s-1.종상소술，재100 cm혹50 cm수심조건하，흑조적광합작용강도개강우고초.
Chosen the Wagouzi site with abundant submerged population in the Honghu Lake as a sampling region, the difference of photosynthesis of submerged macrophytes Hydrilla verticillata( L. f. )Royle and vallisneria natans ( Lour. )Hara which are high resistance and obsorption to the dirty water in Honghu Lake was designed to research their response in the 100 cm and 50 cm water depth by Diving-PAM apparatus. The results showed that the value of External Transfer Rate(ETR)of Hydrilla verticillata and vallisneria natans separately approached to 25. 1 μmol· m-2 · s-1 and 10 . 1 μmol · m-2 · s-1 when the value of Photosynthetic Active Radiation( PAR )was stable for 342 μmol·m-2 · s-1 under the condition of 100 cm water depth. With the PAr intensity gradually becoming strong,ETr of Hydrilla verticillata reached its peak 21. 76 μmol·m-2 ·s-1 when the PAr value was 219 μmol· m-2 ·s-1 ,as well as ETr of vallisneria natans reached its peak 12. 65 μmol·m-2 ·s-1 when the PAr value was 515 μmol·m-2 ·s-1 . On the other hand,the value of ETr of Hydrilla verticillata and vallisneria natans separately approached to 26. 2 μmol·m-2 ·s-1 and 11. 9 μmol·m-2 ·s-1 when the value of PAr was stable for 515 μmol· m-2 ·s-1 under the condition of 50 cm water depth. With the PAr intensity gradually becoming strong,ETr of Hydrilla verticillata reached its peak 25. 27 μmol·m-2 ·s-1 when the PAr value was 219 μmol·m-2 ·s-1 ,as well as ETr of vallisneria natans reached its peak 4. 80 μmol·m-2 ·s-1 when the PAr value was 1 042 μmol· m-2 ·s-1 . In summary,no matter in 100 cm or 50 cm water depth condition,photosynthesis intensity of Hydrilla verticillata is stronger than that of vallisneria natans.
