• Journal of Korean Society of Forest Science
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• v.56 no.1
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• pp.93-98
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• 1982

• 산림경영
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• s.216
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• pp.46-51
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• 2015

이글은 올해 5월 한국임업진흥원에서 개최한 '나의 인생, 나의 임업도전기' 공모전에서 장려상으로 당선된 수상작입니다.

• Journal of Korean Society of Forest Science
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• v.44 no.1
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• pp.43-47
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• 1979

Increased demand for wood products and recent energy crisis have stimulated much attention over the world to the concept of intensive forestry management systems. This shows great potential of increasing biomass yields. Biomass probably will not be a major source to solve the whole problems of fiber and energy shortage but as an alternative source it will, in part, help meet the remarkable demand. In Korea, the systems are not only feasible because of available land areas, many appropriate tree and existing forestry techniques already available, but also urgently needed.

• Journal of the Korean Wood Science and Technology
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• v.31 no.4
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• pp.63-70
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• 2003

One alkaloid derivatives, one amide and two steroids were isolated from the fruit bodies of Tricholoma matsutake. The structures were determinded as adenosine, methyl trans-cinnamate, ergosterol and ergosta-4, 6, 8 (14), 22-tetraen-3-one, respectively, on the basis of spectroscopic data.

• Journal of the Korean Wood Science and Technology
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• v.31 no.5
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• pp.43-48
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• 2003

From the leaves of S. japonica, three compounds were isolated and identified as follows : hypogallic acid, kaempferol and quercetin. The free radical scavenging activities of the isolated compounds were 98.2%, 96.2% and 90.2% at 100 ㎍/ml, respectively. Compound 1 (hypogallic acid) and compound 2 (kaempferol) indicated higher antioxidative activity compared with reference compound, BHT.

• Journal of the Korean Wood Science and Technology
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• v.31 no.5
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• pp.49-56
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• 2003

Two stilbenoids and five flavonoids were isolated from wood of Pinus koraiensis (Pinaceae). The chemical structures of isolated compounds were determined as : 5-hydroxy-7-methoxyflavone, chrysin, galangin, pinocembrin, pinobanksin, 3-hydroxy-5-methoxystilbene and pinosylvin on the basis of Mass and NMR spectroscopic data.

• Journal of Korean Society of Forest Science
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• v.102 no.4
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• pp.550-559
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• 2013

This study looked over the laws and regulations related to forestry workers to analyze the safety accident rates for the past five years (2006-2010), and to suggest improvement plans to reduce the safety accident rates of forestry workers. Findings from comparing information obtained from data are outlined below. The safety accident rates had gradually increased in the forestry fields until 2010, but nowaday it is on the decline. Furthermore, the safety accident rates in the field of forestry were still serious compared to those in the other industrial fields as from 2.1 to 5.1 times. In the results, the workers were especially vulnerable to safety accidents when they fell under the following categories: when falling; within 29 to 90 days after starting the work; over 60 years old; less than one month of service; October; Wednesday; 11 a.m.; and the nether limbs of the body. In the case of Jeollabuk-do, it was reported that more than half of victims did not have any training in safety.

• Journal of Convergence for Information Technology
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• v.11 no.5
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• pp.1-8
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• 2021

In this paper, we propose the construction of an IOT that monitors foresters' physical abnormalities in real time, performs emergency measures, and provides alarms for natural disasters or heatstroke such as a nearby forest fire or landslide. Nodes provided to foresters include 6-axis sensors, temperature sensors, GPS, and LoRa, and transmit the measured data to the network server through the gateway using LoRa communication. The network server uses 6-axis sensor data to determine whether or not a forester has any signs of abnormal body, and performs emergency measures by tracking GPS location. After analyzing the temperature data, it provides an alarm when there is a possibility of heat stroke or when a forest fire or landslide occurs in the vicinity. In this paper, it was confirmed that the real-time detection of physical abnormalities of foresters and the establishment of disaster early warning IOT is possible by analyzing the data obtained by constructing a node and a gateway and constructing a network server.

• Journal of Korean Society of Forest Science
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• v.45 no.1
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• pp.37-45
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• 1979

The purpose of the study was to define the labor change in the moutainous villages, So this study analyzed the mass dram of the population from the mountainous villages created by the unequal development between the first and second under the high economic development and the large difference in the income between city and rural area. The content of the study was (1) the foundation of the production in the survey area (2) labor change in the mountainous villages (3) the supply and the demand of the labor in this area. The date were collected from 118 household of 2 villages (one with a high level of brest product, and the other with a low level of forest products) in Cheon-nam Province through a questionarie. The results of the study were as follows. 1. The mass drain in the mountainous villages started in the middle of 1970's, and the rate of drain has been very rapid and accelerated. 2. The drain of the mountainous village with a low level of forest products is more than that of the mountainous village with a high level of forest products. 3. In the mountainous village with high level of forest products, the specialization in the farmer class has begun and the farmers with a side job are now increasing. 4. Generally the major drain consisted of the young class (16-30 age), and consequently it caused a change in the composition of labor power into old age and women. 5. The character of the forest labor market is how changing from closed to open.

• Journal of Korean Society of Forest Science
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• v.96 no.6
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• pp.705-713
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• 2007

The purpose of this study was to understand the organization and the forestry household income applied the result of 2005 Forestry Census and the Economic survey of Forest household in Korea. As a result of the analysis, there are 97,108 households of a forester in korea 2005. Full time forestry household occupied 7,925 families (8.2%), part time forestry household occupied 88,183 families (91.8%). Therefore, the most household of a forester is part time forestry household in korea. The average people of the household of a forester family is 2.7 people. The age of forest manager are sixties nearly, over sixty years old forest manager occupied 51,505 people (53%). The forest management period of forestry households is more than 6 months in 39,229 families (40.4%), less than 1 month in 7,216 families (7.4%). The average area of forestry households owning forest is 4.6ha. According to the type of business, logging families possesses 19.5 ha. The mean income of forestry households is \27,148,000. One of them, forestry income is \6,529,000, which occupied 24.1%. Furthermore, forestry households less than \5,000,000 forest product sales performance occupied 51,633 families, which is 64%. Forest operating costs is \6,566,000 mean per family. In addition, the number of a forestry household resident villages is 11,829 villages, where is 32.8% of whole villages in korea. There are 2,979 villages where reside forestry household in gyeongsangbuk-do.