선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
문제 정의
- including water reuirements. The purpose of this was to provide basic data required for developing the landscaping and tro, urban forest and forest managing technologies to improve the water tolerance of trees.
제안 방법
- Hence, in order to analyze the speial growth characteristics that fluctuate defend on moisture environment, the study focused its analysis on Fraxinus rhynchophylla and Fraxinus mandshurica which its value is expanding thmiks to broad-leaved tree resource.
- In order to investigate photosynthesis characteristics in accordance with moisture process of F. rhynchophylla and E mandshurica, the study adjusted the moisture condition of soil to A, B, C, and D treatments. It also analyse! and compared the photosynthesis characteristics by the species, time and moisture process again다 grown nursery stock (Table 4).
- 9 days increments. The soil moisture contents were calculated as following method after drying fixed amount of wet soil in an oven at 100- 105℃ temperature and the measuring was carried out 10 times per each treated area(KFS, 2000).
- The water treatments were executed in four steps starting from the early part of June in 1 day, 3 days, 6 days and 9 days increments. The soil moisture contents were calculated as following method after drying fixed amount of wet soil in an oven at 100- 105℃ temperature and the measuring was carried out 10 times per each treated area(KFS, 2000).
- This study also performed a recession analysis and obtained photosynthesis curves using SigmaPlot (SPSS Inc.) to estimate precise light-photosynthesis curves and light compeieation points.
- This study analyzed the impact of artificial water treatment on the chlorophyll contents and photosynthesis by seasonal changes with the seedlings of 2 hardwood species in order to find out the physiological ctaacteristics of each speies including water reuirements. The purpose of this was to provide basic data required for developing the landscaping and tro, urban forest and forest managing technologies to improve the water tolerance of trees.
- mandshurica seedlings were obtained from Northern Regional Forest Service and transplant the seedling into an ordinary plastic container(15 cmx 18 cmx 12 cm). To exclude growth affect of seedlings in accordance with nutrient, the study used vermiculite, peat moss and perlite of culture soil of early April by mixing them up in a 1:1:1 ratio as growing media. And to minimize stress accompany by the transplanting, the seedling have been rooted until the early part of June to reinstate their normal physiological condition and selected 80 seedlings respectively for exjerimental measure.
- treated in 4 levels. Tree seedlings were randomly selected for three periods; June which was before water treatment, August when the leaves were maturing during the water treatment and September when the tree's physiological metabolic activities slowed down, and the chlorophyll contents were analyzed 3 times for each seedling, total 9 times, in order to analyze the seasonal changes of chlorophyll contents accordin응 to the level of chlorophyll contents according to the level of water treatment. For the extraction of chlorophyll contents, the method using Dimethylsulfbxide (DMSO) conforming to Hiscox and Israelstam(1978) method was applied.
대상 데이터
- The study was carried out in greenhouse ofW)nkwang University, college of natural science during early of April to September 2(X)6.
데이터처리
- zMeans with the same letter within a column are not significantly different at 5% level by Duncan's multiple range test.
이론/모형
- Tree seedlings were randomly selected for three periods; June which was before water treatment, August when the leaves were maturing during the water treatment and September when the tree's physiological metabolic activities slowed down, and the chlorophyll contents were analyzed 3 times for each seedling, total 9 times, in order to analyze the seasonal changes of chlorophyll contents accordin응 to the level of chlorophyll contents according to the level of water treatment. For the extraction of chlorophyll contents, the method using Dimethylsulfbxide (DMSO) conforming to Hiscox and Israelstam(1978) method was applied.
- And to minimize stress accompany by the transplanting, the seedling have been rooted until the early part of June to reinstate their normal physiological condition and selected 80 seedlings respectively for exjerimental measure. The analysis of used growing media was analyzed by soil chemical analyzing method. The element contained in growing media essentially required for a tree to grow is the minimum.
성능/효과
- In this study, the control treatment with plenty of water had shown the higher content of chlorophyll. Several reasons were determined for this outcome in which first, the moisture stress in the soil affectol nutrient supply to the young nursery stock second, normal synthesis and protection on chlorophyll was not carried out and third, there was no new chlorophyll creation that would substitute the destroyed chlorophyll.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.