http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 노희명 (검색결과 185 건)
- 무료
- 기관 내 무료
- 유료
-
-
적정 토양 양분 및 수분 상태에서 대기 CO₂농도 상승에 따른 사과나무의 최적 광합성 온도 증가
노희명 서울대학교 농업개발연구소 2001 농업생명과학연구 Vol.5 No.-
Grwoth and photosynthetic responses of apple saplings (Malus domestica Borkh. cv. Fuji) acclimated to 3-years of exposure to contrasting atmospheric CO_2 concentrations (360 and 650 ppm) in combination with current ambient or elevated (ambient+5℃) temperature patterns were determined. Soil moisture regimes were automatically controlled by drip-irrigation scheduled at 50 kPa of soil moisture tension. For the elevated CO_2 concentration alone, overall tree growth was suppressed. However, tree growth was slightly enhanced when warmer temperatures were comnbined with the elevated CO_2 concentration. The elevated CO_2 concentration increased starch accumulation, but the elevated temperature reduced starch accumulation. Light-saturated rates of leaf photosynthesis were suppressed due to the elevated CO_2 concentration, but this effect was removed or enhanced with warmer temperatures. The elevated CO_2 concentration increased optimum temperature for photosynthesis by ca. 4℃, while the warmer temperature did not.
-
노희명,최우정,이은주,윤석인,최영대 한국생태학회 2002 Journal of Ecology and Environment Vol.25 No.5
This study was conducted to examine the seasonal pattern of N and P uptake by reeds (Phragmites australis) planted in newly constructed Shihwa tidal freshwater marshes. Reed and soil samples were collected from the wetland periodically from June 2000 to May 2002. Reed samples were analyzed for dry weight and content of N and P Soil organic matter content and salinity were also determined. Dry matter content of reed increased during the growing season but decreased in the fall and winter. However, this seasonal pattern was not so evident in the second year. In particular, throughout the measurement period, dry matter content of reed was lowest at a site showing high soil salinity. Regression analyses between dry matter content of reed and soil EC(1:5) suggested that dry matter content per unit square meter would decrease by 1.5 kg with every 1 dS m/sup -1/ increase in soil EC(1:5). The amount of N and P assimilated by reed significantly decreased from the fall and was lowest in the spring. Net decrease in N content from reed during the fall and next spring was calculated as 34.5 and 24.6 g m/sup -2/ in the first and second years, respectively, while the corresponding P loss was 4.0 and 1.8 g m/sup -2/. Soil organic mailer content increased in the fall and winter, but decreased in the spring and summer. The results of this study suggested that the removal of N and P by reed would be considerable during the growing season but the nutrients taken up by reeds would return as detritus to the marshes in the fall and winter. Based on the results of the study, therefore, the harvest of the reed at the latter part of the growth would be recommended to prevent further water quality degradation. However, the long-term effects of reed harvest needs further study.
-
-
-
노희명,최효정,윤석인,박지석 한국원예학회 2018 Horticulture, Environment, and Biotechnology Vol.59 No.6
To test the hypothesis that humic acid (HA), anaerobically digested pig slurry fi ltrate (APS), and their combination woulddiff erently aff ect the chemical speciation and extractability of metals (cadmium, copper, and zinc) and their uptake by plants,we conducted a pot experiment using wormwood in two texturally contrasting soils (sandy loam and clay loam) collectedfrom a fi eld near an abandoned Cu mine. Four treatments were laid out: HA at 23.5 g kg −1 (HA), APS at 330 mL kg −1 (APS),HA at 23.5 g kg −1 and APS at 330 mL kg −1 (HA + APS), and a control. Each treatment aff ected the chemical speciationand mobility of the metals, and thereby resulting in variable patterns of plant biomass yield and metal uptake. The APSsupported plant growth by increasing nutrient availability. HA supported or hindered plant growth by impacting the soil’swater and nutrient retention capacity and aeration, in a soil texture-dependent manner, while consistently enhancing theimmobilization of heavy metals. Temporal increases in whole-plant dry matter yield and metal accumulation suggested thatthe plants were capable of metal hyperaccumulation. The results were discussed in terms of the mobility of metals and plantgrowth and corroborated by the 15 N recovery of soil- and plant-N pools under H and HS treatments. Therefore, for eff ectivephytoremediation of polluted soils, an appropriate combination of plant growth promoters (APS) and chelating agents (HA)should be predetermined at the site where chemical stabilization of pollutants is desired.
-
노희명,윤석인,최우정 한국원예학회 2005 Horticulture, Environment, and Biotechnology Vol.46 No.2
To investigate the effects of elevated CO2 and temperature on plant biomass production and N uptake, Chinese cabbages (Brassica campestris cv. Jangmi) were grown at two rates of N (350 and 700 mgkg-1) under contrasting atmospheric CO2 (360 and 650 mmolmol-1) in combination with current ambient or elevated (ambient +5C) temperature for 70 days. Temperature, CO2, and N rate significantly affected dry-mass of Chinese cabbage. Elevated CO2 suppressed dry-mass accumulation of the plants receiving N at 350 mgkg-1 irrespective of temperature, but the degree of suppression was significantly reduced for the plants receiving N at 700 mgkg-1 only when coupled with elevated temperature. Temperature and CO2 significantly affected N content of Chinese cabbages, while N rate did not. Irrespective of temperature and CO2 levels, N uptake efficiency was reduced with increasing N rates. However, N uptake efficiency of the plants receiving high N rates grown at elevated-temperature regimes increased at elevated CO2 levels whereas that of their counterparts grown at ambient-temperature regimes decreased, suggesting that the N rate of 700 mgkg-1 would be insufficient to ensure optimum growth of Chinese cabbages under elevated temperature and CO2. Our results suggested that an alternative N fertilization for Chinese cabbages should be tested if a doubling of atmospheric CO2 level leads to elevated temperatures.
-
-
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
