Iforest - Biogeosciences and Forestry最新文献_第7页

Predictive capacity of nine algorithms and an ensemble model to determine the geographic distribution of tree species 九种算法和一个集合模型的预测能力，以确定树种的地理分布

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-10-31 DOI: 10.3832/ifor4084-015

JC Montoya-Jiménez, J. Valdez-Lazalde, G. Ángeles-Pérez, HM De Los Santos-Posadas, G. Cruz-Cárdenas

引用次数: 2

Physiological dormancy and dormancy release of Sassafras tzumu, a colored-leaf tree species with high landscape and economic value 具有较高景观和经济价值的彩叶树种黄樟的生理休眠与休眠释放

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-10-31 DOI: 10.3832/ifor4031-015

H. Chen, J. Jiang, J. Liu, Z. Tan, Y. Li

引用次数: 1

Light availability influences the invasion of Teline monspessulana (L.) K. Koch in a temperate fragmented forest in Central Chile 光效对柽柳入侵的影响在智利中部的温带破碎森林中

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-10-31 DOI: 10.3832/ifor4026-015

P. Gómez, S. Espinoza, N. Cuadros, E. Goncalves, R. Bustamante

{"title":"Light availability influences the invasion of Teline monspessulana (L.) K. Koch in a temperate fragmented forest in Central Chile","authors":"P. Gómez, S. Espinoza, N. Cuadros, E. Goncalves, R. Bustamante","doi":"10.3832/ifor4026-015","DOIUrl":"https://doi.org/10.3832/ifor4026-015","url":null,"abstract":"The Maulino forest is a temperate ecosystem of the Mediterranean zone of Chile classified as one of the 34 biodiversity hot-spots of the world; however, there is still limited information about the ecological factors that make this native forest prone to be invaded. We assess to what extent forest attributes such as light availability and native species diversity control the invasion process of Teline monspessulana (L.) K. Koch, an aggressive weed, into the Maulino forest, an endemic forest ecosystem of Central Chile. We examined whether the seedling density of this exotic plant is related to forest attributes such as cover, incoming photosynthetically active radiation, litter depth, and native species density and richness. We found that a decrease of light availability reduces T. monspessulana invasion. No relationships were observed between native species diversity and the abundance of T. monspessulana plants. Increasing the forest cover will recover forest structure but at the same time, it will prevent the invasion of T. monspessulana and other exotic plants with similar regeneration niche requirements.","PeriodicalId":13323,"journal":{"name":"Iforest - Biogeosciences and Forestry","volume":"57 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85467451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Do different indices of forest structural heterogeneity yield consistent results? 不同的森林结构异质性指标是否得出一致的结果?

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-10-31 DOI: 10.3832/ifor4096-015

KF Reich, M. Kunz, AW Bitter, G. von Oheimb

{"title":"Do different indices of forest structural heterogeneity yield consistent results?","authors":"KF Reich, M. Kunz, AW Bitter, G. von Oheimb","doi":"10.3832/ifor4096-015","DOIUrl":"https://doi.org/10.3832/ifor4096-015","url":null,"abstract":"Forest management with a focus on high structural heterogeneity is a major goal in modern forestry to increase multifunctionality. The assessment and quantification of forest structures has, therefore, gained much attention in recent years. However, there is no standardized approach to surveying forest heterogeneity; instead, a variety of structural indices, which have been developed over past decades, are used. This makes it difficult to interpret the results of different studies and to base management decisions on such data. In this study, we compared six structural indices that differ in terms of their complexity and the method of data acquisition. These included the Gini coefficient of the diameter at breast height and of tree height, the Shannon index of tree species diversity, two complex indices of structural heterogeneity, one based on conventional inventory data and one on terrestrial laser scanning (TLS) data, and a simple-holistic TLS-based stand structural complexity index. For the comparison of these six indices, we used data from 84 plots in 12 different forest stand types in two study areas in Germany. The stand types con-sisted of different dominant tree species and included different age classes. The degree of correlations among the different indices was highly variable. In addition, we did not find a clear age-dependency of the indices. We conclude that the choice of a specific index plays an important role in the evaluation and interpretation of forest structural heterogeneity. Because TLS data offer multiple benefits in terms of precision, reproducibility and comprehensive-ness, we recommend to use TLS-based indices of structural heterogeneity.","PeriodicalId":13323,"journal":{"name":"Iforest - Biogeosciences and Forestry","volume":"40 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87008665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effects of functional traits on the spatial distribution and hyperdominance of tree species in the Cerrado biome 功能性状对塞拉多生物群系树种空间分布和超优势的影响

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-10-31 DOI: 10.3832/ifor3920-015

HJ De Souza, E. Miguel, RT Resende, Eat Matricardi, AV Rezende, F. Leal, M.S. dos Santos

{"title":"Effects of functional traits on the spatial distribution and hyperdominance of tree species in the Cerrado biome","authors":"HJ De Souza, E. Miguel, RT Resende, Eat Matricardi, AV Rezende, F. Leal, M.S. dos Santos","doi":"10.3832/ifor3920-015","DOIUrl":"https://doi.org/10.3832/ifor3920-015","url":null,"abstract":"The ecological influence of functional traits on species persistence as well as on their role over the organization of forest communities in the Brazilian Cer-rado biome have not been fully understood yet. In this study, we assessed the effects of six functional groups, characterized by three seed dispersal syndromes ( i.e. , anemochory, autochory, and zoochory) and three wood density classes ( i.e. , hardwood, lightwood, and softwood), on tree spatial distribution patterns, habitat occupancy, and ecosystem services (biomass hyper dominance and abundance) provided by a forest community located in the “Parque do Lajeado”, state of Tocantins, Brazil. The similarity among study sites was characterized by applying the tree dominant height approach and the environmental and soil variables as input. The floristic similarity was assessed by applying the Bray-Curtis index. The zoochoric species showed more aggregated spatial pattern at local scale, which indicates that it is more sensitive to environmental gradients than other dispersal syndromes. Meanwhile, hardwood density species were more established in the community, being more persistent to environmental filters. We observed that a small number of species contributed with about 50% of the abundance and biomass of the community, whose functional traits (wood density and dispersal syndrome) indirectly affect the relationship among the community species richness and their ecosystem functions. We observed that the functional traits related to seed dispersal and wood density functional groups resulted in different spatial distribution patterns of those tree species. Therefore, functional traits and environmental factors combined have substantially affected the structure and composition of forest communities at local scale","PeriodicalId":13323,"journal":{"name":"Iforest - Biogeosciences and Forestry","volume":"43 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80967216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variability of tolerance of Wild cherry clones to PEG-induced osmotic stress in vitro 野生樱桃无性系对peg诱导的渗透胁迫的耐受性变异

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-08-31 DOI: 10.3832/ifor4033-015

V. Vuksanović, B. Kovačević, S. Stojnić, M. Kebert, L. Kesić, V. Galović, S. Orlović

引用次数: 5

Seed germination traits of Pinus heldreichii in two Greek populations and implications for conservation 希腊两个居群黑松种子萌发特性及其保护意义

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-08-31 DOI: 10.3832/ifor4045-015

EN Daskalakou, K. Koutsovoulou, S. Oikonomidis, CA Thanos

{"title":"Seed germination traits of Pinus heldreichii in two Greek populations and implications for conservation","authors":"EN Daskalakou, K. Koutsovoulou, S. Oikonomidis, CA Thanos","doi":"10.3832/ifor4045-015","DOIUrl":"https://doi.org/10.3832/ifor4045-015","url":null,"abstract":"Seed germination traits were assessed on Pinus heldreichii H. Christ, a Tertiary relict, high-elevation Mediterranean pine, endemic in the western Balkan Peninsula and southern Italy; it is naturally grown at the northern Greece mountains, but also found in shrubby form above the timberline. Closed and mature cones were collected (October) for three consecutive years from Pindos Range and Mt. Olympus populations. Cone and seed morphological traits were recorded along with the seedling cotyledon number. Seed germination tests were performed under various ecologically meaningful temperatures and light regimes; climate change effects on seed germination and seedling development were assessed based on two climate scenarios. Final seed germination was moderate (~55%) on both, untreated seed lots at most favourable conditions (15 and 20 °C). Although cold stratification is not an absolute requirement, seed germination rate and final percentage are promoted by both a month of cold stratification (at least 30 or 45 days) and white light. The predicted climate change suggests that a prolonged drought period (>3 months) might turn out by the end of the century in the populations studied. Although the temperature increase might not have significant effects in the germination window of the species. The rainfall decrease will inevitably expose the young seedlings to the summer drought, thus increasing the potential mortality rate. Both ex situ ( e.g. , germplasm conservation) and in situ measures of conservation are recommended for the species survival in Greece, with a particular fo-cus on the populations established at lower altitudes.","PeriodicalId":13323,"journal":{"name":"Iforest - Biogeosciences and Forestry","volume":"67 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80904474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring of the incidence of Dutch Elm Disease and mortality in experimental plantations of French Ulmus minor clones 法国小榆无性系试验林荷兰榆病发病率及死亡率监测

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-08-31 DOI: 10.3832/ifor3820-015

É. Collin, T. Pozzi, C. Joyeau, S. Matz, M. Rondouin, C. Joly

{"title":"Monitoring of the incidence of Dutch Elm Disease and mortality in experimental plantations of French Ulmus minor clones","authors":"É. Collin, T. Pozzi, C. Joyeau, S. Matz, M. Rondouin, C. Joly","doi":"10.3832/ifor3820-015","DOIUrl":"https://doi.org/10.3832/ifor3820-015","url":null,"abstract":"The results of 16 experimental plantations of Ulmus minor clones of the French national collection are presented as a complement to a previous work (Collin et al. 2020) on the outcome of the French Programme for the Conservation of Native Elm Genetic Resources. A total of 710 elms from 38 clones were planted in three different regions of France using two types of experimental designs and exposed to natural infection by Dutch Elm Disease (DED). DED infection and subsequent mortality were monitored in rectangular monospecific plantations (“plot-tests”), comprising at least 100 elms (10 clones). Linear plantations of 15 to 36 elms intermixed with other trees and shrubs (“hedge-tests”) investigated the feasibility of using native field elm clones in hedge reconstruction projects. After at least 9 (up to 17) years of experimentation, overall DED infection frequency was 33%, with scores above 63% in the oldest plantation and in two fast-growing tests. The overall mortality in the 232 diseased trees was 21%, reaching 29% in the oldest plantation and 64% in a hedge-test on high quality soil, suggesting a possible effect of the very fast growth of the trees. A few clones showed an interesting lower infection frequency or some ability to recover, whereas some others were found quickly infected in several tests and could serve in future experiments on clone attractiveness for DED vectors. Practical conclusions for genetic resources conservation consist of recommendations for the establishment of conservation plantations using regional clones.","PeriodicalId":13323,"journal":{"name":"Iforest - Biogeosciences and Forestry","volume":"57 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82548815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Reversible and irreversible effects of mild thermal treatment on the properties of wood used for making musical instruments: comparing mulberry to spruce 温和热处理对乐器用木材性能的可逆和不可逆影响:桑树和云杉的比较

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-08-31 DOI: 10.3832/ifor4074-015

E. Karami, I. Brémaud, S. Bardet, T. Alméras, D. Guibal, P. Langbour, K. Pourtahmasi, J. Gril

{"title":"Reversible and irreversible effects of mild thermal treatment on the properties of wood used for making musical instruments: comparing mulberry to spruce","authors":"E. Karami, I. Brémaud, S. Bardet, T. Alméras, D. Guibal, P. Langbour, K. Pourtahmasi, J. Gril","doi":"10.3832/ifor4074-015","DOIUrl":"https://doi.org/10.3832/ifor4074-015","url":null,"abstract":"Thermal treatments can be considered as an accelerated ageing, bringing partly similar changes in properties as naturally aged wood. Thermal treatment was applied on white mulberry ( Morus alba L.), a dominant species for making musical instruments from middle-East to Far-East, to investigate the effects on the vibro-mechanical and physical properties of this wood, and the results compared to previously published data on spruce ( Picea abies Karst.) as a reference for the soundboard of Western string instruments. Thermal treatment (TT) at 150 °C and 0% of relative humidity was applied to five anal-ogous groups of specimens with five different durations (2.5, 8, 24, 72, 261 hours). Humidity re-conditioning of specimens was done to explore the reversibility of TT effects. Physical and vibrational properties such as specific gravity ( γ ), equilibrium moisture content (EMC), CIELab colorimetric values, specific modulus of elasticity ( E ’/ γ ) and damping coefficient (tan δ ) in longitudinal (L) and radial (R) directions, have been measured after stabilisation of samples in standard conditions (20 °C, 65% RH), before and after TT and then after re-conditioning. Untreated mulberry had a low EMC, very low L/R anisotropy and low E ’ L / γ , and relatively low tan δ . Weight loss (WL) and CIELab values evolved similarly during TT for mulberry and for previous results on spruce, however, their EMC and vibrational properties were affected differently. This could be explained in part by the low anisotropy of mulberry, and in part by its particular extractives. The parts of irreversible effects, linked to chemical modification or degradation, and of reversible effects, linked to physical con-figuration, were different between mulberry and spruce. The applied treatments did not bring permanent “improvements” in vibrational properties of mulberry, yet its colour appearance was enhanced.","PeriodicalId":13323,"journal":{"name":"Iforest - Biogeosciences and Forestry","volume":"17 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76010933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Afforestation monitoring through automatic analysis of 36-years Landsat Best Available Composites 通过对36年Landsat最佳可用复合材料的自动分析进行造林监测

IF 1.7 4区农林科学

Iforest - Biogeosciences and Forestry Pub Date : 2022-08-31 DOI: 10.3832/ifor4043-015

A. Cavalli, S. Francini, G. Cecili, C. Cocozza, L. Congedo, V. Falanga, GL Spadoni, M. Maesano, M. Munafò, G. Chirici, G. Scarascia Mugnozza

引用次数: 6