CAJ | 학술논문

对广东天井山自然分布的国家保护植物粗齿桫椤和金毛狗，以及邻近生长的狗脊叶片进行了生理生态特性测定；用温湿度自动记录仪监测了2013年其生境的温湿度，测定了土壤的理化特性、光照强度，以期为它们的生存和发展提供参考.结果表明：生境年均气温17.896℃，年均相对湿度91.703%；土壤pH4.46，有机质含量2.20%.林内光照强度不足旷地的18%.叶片SPAD值和平均的净光合速率粗齿桫椤<金毛狗<狗脊，蒸腾速率则为粗齿桫椤>狗脊>金毛狗，3种植物均对低光照有较好的适应性.粗齿桫椤表现出低光合速率高蒸腾速率，有可能导致其生长较缓慢.
대엄동천정산자연분포적국가보호식물조치사라화금모구，이급린근생장적구척협편진행료생리생태특성측정；용온습도자동기록의감측료2013년기생경적온습도，측정료토양적이화특성、광조강도，이기위타문적생존화발전제공삼고.결과표명：생경년균기온17.896℃，년균상대습도91.703%；토양pH4.46，유궤질함량2.20%.림내광조강도불족광지적18%.협편SPAD치화평균적정광합속솔조치사라<금모구<구척，증등속솔칙위조치사라>구척>금모구，3충식물균대저광조유교호적괄응성.조치사라표현출저광합속솔고증등속솔，유가능도치기생장교완만.
The leaf eco-physiological characteristics of national key protected species of Gymnosphaera hancockii, Cibotium barometz and Woodwardia japonica nearby were determined at nature growing habitat in Tianjingshan, Guangdong. Using an automatic onset HOBO mini-weather station,the air temperature,and the air relative humidity were monitored for one year(2013)at the field site. The soil physic-chemical characteristics,the light intensity of inner and open outside of the forest were also measured in order to provide basic data for protecting and enhancing the plant population. Results showed that the mean annual air temperature was 17.896℃,and the mean annual air relative humidity was 91.703%. Soil pH was 4.46 with organic matter content of 2.20%. The light intension inner the forest was 18%less than that of open outside of the forest. The leaf SPAD values and mean net photosynthesis rate showed that of G. hancockii<C. barometz<W. japonica,meanwhile the transpiration rate showed that of G. hancockii>W. japonica>C. barometz. All of the three species were adapted to the low light intension. The results of lower photosynthesis rate and higher transpiration rate of G. hancockii suggested that the lower growth speed.