Forest Science and Technology最新文献

{"title":"Seasonal water temperature variations in response to air temperature and precipitation in a forested headwater stream and an urban river: a case study from the Bukhan River basin, South Korea","authors":"Sooyoun Nam, Show-Ling Jang, K. Chun, Jae Uk Lee, S. Kim","doi":"10.1080/21580103.2021.1882589","DOIUrl":"https://doi.org/10.1080/21580103.2021.1882589","url":null,"abstract":"Abstract Seasonal water temperature variations in response to air temperature and precipitation were examined in a forested headwater stream (Yeonyeop stream, YS) and an urban river (Bukhan River, BR) within the same basin. In both sites, precipitation and air/water temperatures were monitored from April to November of 2017 and 2018. The differences between air and water temperatures were 4–6 °C higher in the YS than the BR during the summer and fall seasons. Air temperature and precipitation exhibited seasonal differences with no apparent spatial variations; however, water temperature alone varied both seasonally and spatially. Mean temperature elasticity in the YS was greater than that in the BR, whereas mean precipitation elasticity in the YS was lower than that in the BR. Additionally, temperature elasticity increased with water temperature, whereas precipitation elasticity increased with decreases in water temperature, albeit only during the summer. From an elasticity standpoint, our findings suggest that water temperature in a forested headwater stream is more sensitive to air temperature changes than that in an urban river.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"R-30 1","pages":"46 - 55"},"PeriodicalIF":1.9,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84754346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The use of computer vision to estimate tree diameter and circumference in homogeneous and production forests using a non-contact method","authors":"B. Putra, Nadira Janna Ramadhani, Dedy Wirawan Soedibyo, B. Marhaenanto, I. Indarto, Yualianto Yualianto","doi":"10.1080/21580103.2021.1873866","DOIUrl":"https://doi.org/10.1080/21580103.2021.1873866","url":null,"abstract":"Abstract Tree diameter and circumference measurements are important metrics that should be monitored periodically and which can be used to determine rates of plant growth, timber production (wood), rubber tapping time, and to estimate the nutrient content of the soil in agroforestry especially for rubber and Albizia sp. trees. In this study, we evaluated the use of optical sensors, including a smartphone camera, which were analyzed by an image processing technology to estimate tree circumference of homogeneous and production forests especially rubber and Albizia forest plantations, through a real-time tree diameter measurement approach. Camera measurements were carried out for the diameter at breast height (DBH) and a certain distance of each tree (with the diameter of tree range of ∼6–50 cm). The results show that the use of smartphone camera measurements is highly correlated with manual measurements obtained using a tree caliper or meter tape in estimating tree circumference with coefficient of determination (R 2) and RMSE of 0.95 and 7.9 cm, respectively. Thus, this tool can be employed as an alternative method for measuring tree diameter and circumference.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"13 1","pages":"32 - 38"},"PeriodicalIF":1.9,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87999112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth characteristics and saponin content of mountain-cultivated ginseng (Panax ginseng C. A. Meyer) according to seed-sowing method suitable for cultivation under forest","authors":"S. Yong, Y. Seo, Hak-Gon Kim, DongJin Park, Y. Seol, E. Choi, J. Hong, M. Choi","doi":"10.1080/21580103.2020.1829098","DOIUrl":"https://doi.org/10.1080/21580103.2020.1829098","url":null,"abstract":"Abstract Mountain-cultivated ginseng (MCG) is a very important health functional material in Korea and the USA. In this study, the growth and saponin of MCG change according to the sowing method were investigated. Six methods of sowing according to the natural cultivation method that grows in the Sancheong mountain ginseng farm were investigated. Germination rate and budding rate were different according to the sowing method. The growth characteristics of the MCG were also different in the sowing method. Among the six sowing methods, the length of leaves was the widest in BFS. The width of the leaves was wide in DFS and DS. The weight of the shoot was the heaviest in BFS, and the DF was the lightest. Root diameter was highest in BFS and DFS covering both fallen leaves and soil. Total fresh weight was the highest at 4.03 g in BFS, followed by DFS. The S/R ratio of DF was lower than that of the other methods. This suggests that the S/R ratio is lowered because the growth of the ground part is worse. The treatment group with the highest crude saponin content was BF and the lowest treatment group was BS. Shoot and root growth tended to increase with growing period, saponin content increased slightly within 1–3 years, but decreased slightly after that. In particular, the ratio of PD/PT, which has a great influence on the efficacy of ginseng, was also different according to the sowing method. The seed sowing method identified in this study will greatly contribute to the improvement of the survival rate decrease over the cultivation period, and it will also contribute to the production of high-quality MCG.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"5 1","pages":"195 - 205"},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72820719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selection of dipterocarp species for enrichment planting in a secondary tropical rainforest","authors":"Widiyatno, F. Hidayati, S. Hardiwinoto, S. Indrioko, S. Purnomo, Jatmoko, N. Tani, M. Naiem","doi":"10.1080/21580103.2020.1831620","DOIUrl":"https://doi.org/10.1080/21580103.2020.1831620","url":null,"abstract":"Abstract The selection of species for enrichment planting that involves native species in a secondary lowland dipterocarps forest as one of the tropical rainforest types should be conducted to maintain the sustainable management of tropical rainforests. The research of species trial of dipterocarp species was planted under a randomized complete block design with four replications. The following parameters were examined: survival rate, diameter breast height (DBH), pilodyn penetration (PP), and stress wave velocity (SWV). The survival rate (F = 1.72; p = 0.047), DBH (F = 6.67, p < 0.0001), and pilodyn penetration (F = 14.19; p < 0.001) significantly differed at 12.5 years after planting. The survival rate of Shorea leprosula was the highest (85%) of all the species, and the survival rate of other species, namely, S. macrophylla, S. ovalis, S. johorensis, S. scaberima, and S. parvifolia, was more than 70%. The best growth of DBH parameter was observed in S. platyclados. The DBH growth of S. platyclados 12.5 years after planting were 27.62 cm (mean annual diameter increment [MADI] = 2.2 cm/year). The species whose growth in DBH was similar to those of S. platyclados were S. leprosula, S. parvivolia, and S. ovalis. However, stress wave velocity (SWV) was not significantly different among dipterocarp species (F = 1.26; p = 0.234). Pilodyn penetration (PP) was significantly correlated with DBH (Pearson’s correlations = 0.306; p < 0.001), whereas stress wave velocity was not significantly correlated with DBH and PP (p > 0.05), and their Pearson’s correlations were 0.043 and −0.012, respectively. These results suggested that each dipterocarp species varied in terms of their growth and wood properties. Thus, choosing the species for enrichment planting in secondary tropical rainforests depends on the characteristics of each species and the desired final product of forest management.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"38 1","pages":"206 - 215"},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76121878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of windbreak Forest according to tree species and planting methods based on wind tunnel experiments","authors":"S. Jeong, Sang-Hyun Lee","doi":"10.1080/21580103.2020.1823896","DOIUrl":"https://doi.org/10.1080/21580103.2020.1823896","url":null,"abstract":"Abstract To provide a basis for the effective and efficient design of windbreak forests, wind tunnel tests were conducted to analyze the protection against wind afforded by the use of various species and various structures of planted trees. Various row-based planting structures were used in an attempt to find the most effective arrangement of a windbreak forest. Four types of structures were studied: a simple structure of coniferous trees (1, 2, or 3 rows of Pinus thunbergii), a simple structure of broadleaf trees (1, 2, or 3 rows of Quercus acutissima), mixed structure 1 (3 rows: P. thunbergii, Q. acutissima and P. thunbergii) and mixed structure 2 (3 rows: Q. acutissima, P. thunbergii and Q. acutissima). The testing materials were 3-year-old P. thunbergii and 8-year-old Q. acutissima. As the height of the testing part was 2.0 m, the height of trees was cut to make it 1.5 m based. The trees were fixed in a vase of 30 cm (Width) × 30 cm (Height). The experimental simulation model was designed 3meter (Width) × 2meter (Height) × 9 meter (Length). Putting porosity between trees aside, it was appropriate with the 7.5% of black ratio. All arrangements of P. thunbergii rows decreased the wind speed at every measurement point; especially, the 3-row structure of P. thunbergii showed a wind speed reduction of more than 15% greater than the two single-row structures studied. The wind speed reduction of P. thunbergii was maximized at a distance 1 m downwind from the last row, with wind speed increasing further downwind. Also, comparing the effect of decreasing wind speed according to the height in one-layered structure, middle-height marked the best decrease and lowered as it goes far from the middle-height. This can be explained with the cone-shaped water pipe. However, observing that the same phenomenon does not happen in three-layered structures, it was found that the difference due to different shapes of the water pipe can be offset by adding a row of plants. Therefore, using the alternating structure of coniferous, broadleaf, and coniferous rows would be a better choice, offering a similar effect with less risk of loss to disease and insects.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"29 1","pages":"188 - 194"},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89161849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utilization of woody pruning residues of apple trees","authors":"N. Gilanipoor, R. Spinelli, R. Naghdi, A. Najafi","doi":"10.1080/21580103.2020.1845822","DOIUrl":"https://doi.org/10.1080/21580103.2020.1845822","url":null,"abstract":"Abstract Utilize agricultural residues from pruning brings many advantages including employment, social and economic benefit, rural development, natural forest protection, increased energy efficiency, and lower costs of raw material for the production of particleboard industry. In this study, the use of wood utilization of pruning residues from apple trees has been investigated by using chipping at the landing chipping methods (LCMs) and farm chipping methods (FCM). These methods were conducted on seven farms, totaling 9.2 ha. A time study was used to estimate operation time and cost. Transportation of chips from the study area to factories was done with semi-trailers, trucks, and pickup trucks. The residue yield was between 1.8 and 2.0 green ton per hectare. The maximum time was related to chipping and the collection of residues and the most delay was mechanical. The residues were collected, chipped, and transported to the particleboard factory at a cost between US$10.18 and US$19.46 per ton, and the profit rate between US$15.5 and US$24.8 per ton depending on chipping methods and secondary transport system. Cost and the total time of LCM were lower than the FCM, and also production rate of LCM was higher than the FCM; therefore, this method was more effective in processing residues from apple trees. Regression techniques showed that in LCM, the effect of diameter and age was significant on residue processing time and in FCM, the effect of diameter, age, residue density, and functional the area was significant in residue processing time.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"63 1 1","pages":"216 - 223"},"PeriodicalIF":1.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80874107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nutrient stocks of Japanese blue oak (Quercus glauca Thunb.) stands on different soil parent materials","authors":"Gyeongwon Baek, Eun-Ji Bae, C. Kim","doi":"10.1080/21580103.2020.1822924","DOIUrl":"https://doi.org/10.1080/21580103.2020.1822924","url":null,"abstract":"Abstract Soil parent materials originating from different geologic settings represented broad differences in the forest nutrient environment, but few studies have been conducted on the relationships between soil parent materials and nutrient stocks in forest stands. This study was performed to compare the nutrient stocks of Japanese blue oak (Quercus glauca Thunb.) stands grown on forest soils inherited from two different parent materials, basalt and sandstone, in southern Korea. A total of 29 Japanese blue oak trees were destructively sampled (15 trees on basalt and 14 trees on sandstone) to compare the nutrient content of the tree components (stem wood, stem bark, branches, and leaves). Samples of the forest floor and a soil depth of 0–30 cm were collected to measure the nutrient stocks of the two parent materials. The mean nutrient concentrations of the tree components varied significantly between the basalt and sandstone parent materials. The mean carbon and potassium concentrations of stem wood were significantly higher in sandstone than in basalt, whereas the nitrogen concentration of stem wood and stem bark were lower in sandstone than in basalt (p < .05). A significantly higher carbon, nitrogen, potassium, and magnesium stocks of the forest floor were found in sandstone than in basalt. However, the soil carbon, nitrogen, calcium, and magnesium stocks at a depth of 0–30 cm were significantly higher in basalt than in sandstone. The results demonstrate that the aboveground nutrient concentration and belowground nutrient stocks of Japanese blue oak stands can be altered greatly by different parent materials.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"14 1","pages":"180 - 187"},"PeriodicalIF":1.9,"publicationDate":"2020-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74011139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic diversity and structure of Prunus padus populations in South Korea based on AFLP markers","authors":"Ji-young Ahn, Jei-Wan Lee, Hyo-In Lim, K. Hong","doi":"10.1080/21580103.2020.1807415","DOIUrl":"https://doi.org/10.1080/21580103.2020.1807415","url":null,"abstract":"Abstract We applied seven pairs of primer-restriction enzyme combinations to investigate the genetic diversity, genetic differentiation, and genetic structure of Prunus padus populations with AFLP markers. The values obtained for average of effective alleles (A e), percentage of polymorphic loci (%P), Shannon’s diversity index (I), and expected heterozygosity (H e) were 1.38, 81.4, 0.357, and 0.223%, respectively. The expected heterozygosity (Hj) obtained by using a Bayesian method was 0.256. The level of genetic diversity obtained for P. padus was low compared to that of Prunus species and other species with a similar life history. The inbreeding coefficient (F IS) from the approximated Bayesian method was 0.767. This value was lower than that obtained for Ulmus davidiana, which undergoes both sexual and asexual reproduction. However, the value obtained was larger than that for other species that undergo sexual reproduction, such as, Carpinus laxiflora, Phellodendron amurense, and Acer pseudosieboldianum. The value of genetic differentiation was 0.245 from AMOVA (ΦST) and 0.278 from Bayesian method (θII). The obtained level of genetic differentiation was large compared to that of other Prunus species plants and other species with a similar life history. According to UPGMA and Bayesian clustering, 11 populations were divided into two genetic groups. However, some populations were detected as weak genetic structures according to the geographical distribution. It was occurred by forest succession, asexual propagation strategies to adapt local environmental change, and gene flow being gradually decreased due to population fragmentation by demographic disturbances.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"24 1","pages":"171 - 179"},"PeriodicalIF":1.9,"publicationDate":"2020-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86085631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Land cover changes and carbon storage before and after community forestry program in Bleberan village, Gunungkidul, Indonesia, 1999–2018","authors":"R. Sadono, E. Pujiono, Linda Lestari","doi":"10.1080/21580103.2020.1801523","DOIUrl":"https://doi.org/10.1080/21580103.2020.1801523","url":null,"abstract":"Abstract This study investigated the land cover changes, carbon storage dynamics and their underlying socio-economic processes before and after a community forest permit in Bleberan village, Gunungkidul, Indonesia, during 1999–2018. We used a combination of the forest canopy density model, carbon conversion and socio-economic related data to analyze land cover classes in the periods of 1999–2003, 2003–2009, and 2009–2018, representing the phases of several years before community forestry permit, initial phase of community forestry establishment and several years after community forestry permit, respectively. Results showed that at baseline (1999), where illegal logging was started on the ground, the condition of the 40 ha investigated area was dominated by non-forest in the form of open land by 54% with an amounted carbon storage of 1352.62 ton. In the phase of before community forestry permit (1999–2003), when there was continuous illegal logging, the open land rise quickly achieved to 83%, with only 312.09 ton of carbon storage remaining. In the initial phase of community forestry establishment (2003–2009), when the government issued a legalization of community forest, the mixed dryland agriculture shifted to dominate the area by 55%, with the carbon storage being increased to 1840.94 ton. The last phase, several years after community forestry permit (2009–2018), which characterized by active engagement of the community in forest rehabilitation, the area was altered to fully stocked teak plantation forest by 82%, with a carbon storage enhancement of 3379.16 ton or two times higher than that at baseline. Such results are important for the forest community authority and related stakeholder for designing appropriate forest-related policies and supporting REDD + implementation.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"106 1","pages":"134 - 144"},"PeriodicalIF":1.9,"publicationDate":"2020-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80756140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of transpiration on the physiological vitality of Zelkova serrata","authors":"Dong-Hak Kim, J. Jung, Cheul-ho Lee, Byung-Duck Park, Kwan-Ho Bae, Ki Woo Kim, P. Kim","doi":"10.1080/21580103.2020.1801525","DOIUrl":"https://doi.org/10.1080/21580103.2020.1801525","url":null,"abstract":"Abstract This study aimed to investigate the effect of suppressing transpiration on the physiological characteristics of trees and identify suitable indicators to assess tree vitality. Three seedlings of Zelkova serrata were used: a control, a unit treated on the upper sides of the leaves (TU), and a unit treated on double sides of the leaves (TD). Changes in photosynthetic rate, transpiration rate, sap velocity, and bark temperature following the suppression of transpiration were measured. The transpiration rate and other physiological characteristics of TU were not significantly different from those of the control except for photosynthetic rate. However, TD showed a significantly lower photosynthetic rate, transpiration rate, and sap velocity compared to the control. The bark temperature of TD was not significantly higher than that of the control and TU. Our findings indicate that photosynthetic rate and sap velocity were positively correlated with transpiration rate, whereas bark temperature was negatively correlated. Furthermore, photosynthetic rate showed the most significant linear relationship with transpiration rate, suggesting the photosynthetic rate is a suitable physiological indicator to evaluate the vitality of Z. serrata.","PeriodicalId":51802,"journal":{"name":"Forest Science and Technology","volume":"88 1","pages":"154 - 160"},"PeriodicalIF":1.9,"publicationDate":"2020-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90161524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}