Korea Forest Service

About: Korea Forest Service is a government organization based out in Daejeon, South Korea. It is known for research contribution in the topics: Environmental science & Ecosystem. The organization has 52 authors who have published 56 publications receiving 1122 citations.

Method for quantifying plant resources using GIS

Abstract: A method for quantifying plant resource using a GIS is disclosed, in which it is possible to more efficiently quantify plant resources with less manpower, time and cost using a GIS when quantifying plant resources in a certain region. In the method, a sample group is extracted from mother groups having a plurality of distribution maps having a plurality of environment factors including IMI as attribute data, the IMI being obtained through a GIS preprocess. A relative model formula is obtained between a plant resource real measurement value of the sample group and an environment factor real measurement value and is related with the distribution map of the mother group, and the distribution maps are overlapped for thereby forming a plant resource estimation distribution map of the mother group.

Response of forest soil respiration to nutrient addition depends on site fertility

Abstract: Flux of CO2 from the forest soil surface ( $${\text{F}}_{{{\text{CO}}_{ 2} }}$$ ) reflects the activity of roots and microbes responding to plant and soil properties that are influenced by global changes such as nitrogen deposition and increasing temperature and atmospheric CO2. We added low levels of N (3 g/m2-year), P (1 g/m2-year) or N + P to thirteen northern hardwood stands of different age and soil N cycling and measured soil respiration, microbial respiration and fine root turnover. We hypothesized that soil respiration would decline in response to nutrient addition, but that this response would vary depending on forest age and N cycling rate. Soil respiration was significantly higher in successional ( 90-year-old). Overall, no significant treatment effects or age x treatment interactions were observed. However, on an individual stand basis, significantly lower soil respiration was observed in nutrient addition plots at four of the most infertile sites. Over half of the variation in the response ratio (fertilized-control/control) of soil respiration to fertilization was explained by using pre-treatment N cycling rate as a predictor: i.e., the greatest reduction in soil respiration on N and N + P fertilized plots occurred on the sites with lowest pre-treatment soil N mineralization and litterfall N flux. Nutrient additions did not significantly affect either fine root turnover (minirhizotrons) or microbial respiration (laboratory incubations). Perhaps responses of fine root biomass or rhizosphere C flux influenced the response of soil respiration to increasing soil fertility.

Somatic embryogenesis in leaf tissue culture of Soapberry (Sapindus mukorossi Gaertn.)

Abstract: Leaf explants formed embryogenic calluses at a frequency of 53.9% when cultured on B5 media supplemented with 0.1 mg l �1 2,4-dichlorophenoxyacetic acid (2,4-�) and 0.01 mg l �1 6-benzyladenine (BA) for 6 weeks. Upon transfer onto media with 5 mg l �1 abscisic acid, embryogenic calluses yielded somatic embryos at 73%. Somatic embryos developed into plantlets on media without plant growth regulators at 90%. Embryogenic calluses proliferated and maintained embryogenic capacity when subcultured on media with 0.1 mg l �1 2,4-� and 0.01 mg l �1 BA at 4-week intervals. �is culture system is a n eective means for clonal propagation and genetic manipulation of soapberry because it ensures taproot development required for tree stability.

An Analysis of Spectral Pattern for Detecting Pine Wilt Disease Using Ground-Based Hyperspectral Camera

Abstract: 본 연구에서는 소나무재선충병이 확산되어 있는 거제도를 대상으로 소나무재선충병 감염목 특성분석을 위하여 지상용 초분광 카메라를 활용하여 2012년과 2013년에 걸쳐 대상 임목을 촬영하였다. 영상 촬영은 소나무재선충병이 확산되는 시기인 6~9월 기간에 개체목 단위와 임분 단위로 구분하여, 개체목은 인위적으로 소나...

Comparative wood anatomy of Taxaceae

Abstract: Comparative wood anatomy of Taxaceae s.l. was examined to elucidate the differences in wood features among genera. In total, 25 samples, comprising three varieties and seven species from five genera (Pseudotaxus was not included), were examined. Sliding microtome, wood maceration and scanning electron microscopy methods were used for the study. The growth rings are well developed and early and late wood are distinguishable in a cross-section. In general, there is remarkable uniformity in the characteristics of the five genera of Taxaceae, although some differences in quantitative traits were found. Wood of Taxaceae s.l. differs from that of most conifers by having helical thickening in the tracheid inner walls, with the exception of Austrotaxus spicata R.H.Compton. All genera are characterised by the absence of resin canals, predominantly uniseriate pits on the radial wall of the axial tracheids, and the presence of pits on the tangential walls of the axial tracheids. The rays are composed solely of parenchyma cells and are uniseriate (occasionally biseriate in Torreya nucifera (L.) Siebold et Zucc.), with a height of 1–22 cells. The genus Taxus shares more characteristics with Torreya than with Amentotaxus, Austrotaxus and Cephalotaxus. Correspondingly, Amentotaxus and Cephalotaxus resemble each other, marked by the presence of either diffuse or sparse axial parenchyma with nodulated transverse walls. Austrotaxus spicata is the sole species that lacks helical thickenings in the tracheid walls and has sparse axial parenchyma with smooth transverse walls. These two features, namely, the absence of helical thickenings and axial parenchyma with smooth transverse walls, are plesiomorphic and might be considered a more primitive character in wood anatomy. Among the other four genera, Amentotaxus appears to have an annular type of wall thickening that could be considered plesiomorphic to the spiral thickenings found in Taxus, Torreya and Cephalotaxus.