Forest Systems最新文献_第5页

Resource Communication: ForestAz - Using Google Earth Engine and Sentinel data for forest monitoring in the Azores Islands (Portugal) 资源交流：ForestAz-使用谷歌地球引擎和哨兵数据监测亚速尔群岛的森林（葡萄牙）

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-07-11 DOI: 10.5424/fs/2022312-18929

Manuel Fernández-Urrutia, A. Gil

{"title":"Resource Communication: ForestAz - Using Google Earth Engine and Sentinel data for forest monitoring in the Azores Islands (Portugal)","authors":"Manuel Fernández-Urrutia, A. Gil","doi":"10.5424/fs/2022312-18929","DOIUrl":"https://doi.org/10.5424/fs/2022312-18929","url":null,"abstract":"Aim of study: ForestAz application was developed to (i) map Azorean forest areas accurately through semiautomatic supervised classification; (ii) assess vegetation condition (e.g., greenness and moisture) by computing and comparing several spectral indices; and (iii) quantitatively evaluate the stocks and dynamics of aboveground carbon (AGC) sequestrated by Azorean forest areas. \u0000Area of study: ForestAz focuses primarily on the Public Forest Perimeter of S. Miguel Island (Archipelago of the Azores, Portugal), with about 3808 hectares. \u0000Material and methods: ForestAz was developed with Javascript for the Google Earth Engine platform, relying solely on open satellite remote sensing data, as Copernicus Sentinel-1 (Synthetic Aperture Radar) and Sentinel-2 (multispectral). \u0000Main results: By accurately mapping S. Miguel island forest areas using a detailed species-based vegetation mapping approach; by allowing frequent and periodic monitoring of vegetation condition; and by quantitatively assessing the stocks and dynamics of AGC by these forest areas, this remote sensing-based application may constitute a robust and low-cost operational tool able to support local/regional decision-making on forest planning and management. \u0000Research highlights: This collaborative initiative between the University of the Azores and the Azores Regional Authority in Forest Affairs was selected to be one of the 99 user stories by local and regional authorities described in the catalog edited by the European Commission, the Network of European Regions Using Space Technologies (NEREUS Association), and the European Space Agency (ESA).","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45491646","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

Using inventory variables for practical biodiversity assessment in plantation stands 利用清单变量进行人工林生物多样性评价

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-07-05 DOI: 10.5424/fs/2022312-18856

Marijana Cosovic

{"title":"Using inventory variables for practical biodiversity assessment in plantation stands","authors":"Marijana Cosovic","doi":"10.5424/fs/2022312-18856","DOIUrl":"https://doi.org/10.5424/fs/2022312-18856","url":null,"abstract":"Aim of study: Practically and simply assessing biodiversity by using inventory variables in four types of forest plantation stands (mixed and pure) including species such are chestnut, blue gum and maritime pine. \u0000Area of study: Northwest Portugal in Vale do Sousa (14,840 ha), which is 97% covered with plantation forests. \u0000Material and methods: Simulated data, from 90-year stand-level forest management planning, were considered using three indicators: tree species (number of different species and species origin—native or exotic), mean diameter at breast height (DBH), and shrub biomass. Two shrub regeneration types (fully regeneration by seed and fully regeneration by resprouting), and three site quality conditions were also considered. \u0000Main results: Mean biodiversity scores varied between very low (10.13) in pure blue gum stands on lowest-quality sites with shrub regeneration by seed, and low (29.85) in mixed stands with a dominance of pine, on best-quality sites with shrub regeneration by resprouting. Site quality and shrub regeneration type significantly affected all biodiversity scores in mixed stands dominated by pine and pure chestnut stands, while less affected pure blue gum stands and mixed stands dominated by blue gum. \u0000Research highlights: The considered biodiversity indicators cover the major biodiversity aspects and allow biodiversity assessment over time. The findings are relevant for biodiversity conservation and fire protection management.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46506137","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

Significant impact of allochthonous nutrient loads on microarthropods in forest soils 外来养分负荷对森林土壤微节肢动物的显著影响

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-07-05 DOI: 10.5424/fs/2022312-19008

Audrone Petrauskiene, R. Iršėnaitė, R. Taraškevičius, D. Matuleviciute, J. Motiejūnaitė

{"title":"Significant impact of allochthonous nutrient loads on microarthropods in forest soils","authors":"Audrone Petrauskiene, R. Iršėnaitė, R. Taraškevičius, D. Matuleviciute, J. Motiejūnaitė","doi":"10.5424/fs/2022312-19008","DOIUrl":"https://doi.org/10.5424/fs/2022312-19008","url":null,"abstract":"Aim of study: The aim of this study was to investigate the impact of allochthonous material from piscivorous birds on forest soil microarthropod communities. \u0000Area of study: Six study zones were designated in Pinus sylvestris stands with nesting sites of the great cormorant, taking into account the relief and the duration of the ornithogenic impact. \u0000Materials and methods: The total abundance of mites and Collembola and the species richness and diversity of Oribatida and Gamasina mites were assessed and compared. \u0000Main results: The abundance of Collembola, Tarsonemidae and Acaridae mites positively correlated with ornithogenic activity, while Oribatida and Gamasina mites decreased significantly. The structure of microarthropod communities was similar in most of the studied zones, except for the active nesting zone and the abandoned part of the colony on the dune slope. The greatest species richness of Oribatida and Gamasina was found in the unaffected forest in the dune hollow, whereas the lowest value was found in the active nesting area and in the abandoned part of the colony on the dune slope. Of the environmental parameters studied, soil pH (r = - 0.725) and tree layer (r = 0.827) were those most significantly related to the changes of microarthropod communities. \u0000Research highlights: We found that cormorant colonies have a strong impact on forest ecosystems and soil properties, leading to significant changes in soil microarthropod communities. Birds thus create a natural disturbance experiment that can help reveal the factors that determine the diversity and composition of natural microarthropod communities.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43094674","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

Longitudinal analysis of Pinus caribaea var. hondurensis full-sibling progenies based on multivariate analysis 基于多变量分析的加勒比松全同胞子代纵向分析

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-06-29 DOI: 10.5424/fs/2022312-19312

Vanessa Ishibashi, Paulo-C. Flôres-Junior, D. T. Martinez, A. S. Coelho, A. Higa

{"title":"Longitudinal analysis of Pinus caribaea var. hondurensis full-sibling progenies based on multivariate analysis","authors":"Vanessa Ishibashi, Paulo-C. Flôres-Junior, D. T. Martinez, A. S. Coelho, A. Higa","doi":"10.5424/fs/2022312-19312","DOIUrl":"https://doi.org/10.5424/fs/2022312-19312","url":null,"abstract":"Aim of study: To define an early selection strategy based on tests applied to full-sibling progenies of Pinus caribaea var. hondurensis grown in the Cerrado Biome. \u0000Area of study: Prata region (MG), Brazil. \u0000Material and methods: Progeny tests were cultivated in 2006; the study followed a completely randomized design, with 79 families of full-siblings and 15 repetitions, with one plant per plot. Thinning was carried out at the age of 6 and 8 years; 615 individuals and 44 families were included in the test. The following quantitative variables were used in the statistical analysis of data on the remaining individuals: diameter at breast height (DBH) in cm, total height (H) in m, and volume in dm³ at the age of 3, 4, 5, 6, 7, 8 and 11 years. BLUP multi-trait multivariate model, with non-structured covariance structure matrix, was adopted for calculations. \u0000Main results: There were strong additive genetic correlations (above 90%) between variables DBH and H, in all analyzed ages. Strong volume correlations were estimated based on the age group over four years; volume selection efficiency reached its peak at the age of five years. Selection based on volume at the age of 5 years leads to genetic gains in this variable; selection intensity values can range from 7.8% to 6.4% and 5.4%, and from 10% to 20% and 30%. \u0000Research highlights: The best strategy lies on carrying out the selections at the age of five years, based on 30% selection intensity.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43870216","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

VIS/NIR spectra and color parameters according to leaf age of some Eucalyptus species: influence on their classification and discrimination 部分桉树品种叶龄的VIS/NIR光谱及颜色参数对其分类和判别的影响

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-06-28 DOI: 10.5424/fs/2022312-19242

I. P. Migacz, Jane Manfron, P. Farago, V. Raman, G. I. D. de Muñiz, S. Nisgoski

{"title":"VIS/NIR spectra and color parameters according to leaf age of some Eucalyptus species: influence on their classification and discrimination","authors":"I. P. Migacz, Jane Manfron, P. Farago, V. Raman, G. I. D. de Muñiz, S. Nisgoski","doi":"10.5424/fs/2022312-19242","DOIUrl":"https://doi.org/10.5424/fs/2022312-19242","url":null,"abstract":"Aim of study: The aim of this study was to verify the differences in VIS/NIR spectra and leaf color parameters of leaves of Eucalyptus badjensis, E. benthamii, E. dunnii, E. grandis, E. globulus and E. saligna, at four ages, and their influence on species discrimination. \u0000Area of study: São Mateus do Sul, Paraná, Brazil. \u0000 Material and methods: Seedlings of the six species, with four replicates for each, were acclimatized in the same environment, in October 2015, in an entirely randomized design. Leaf samples were collected from plants that were 6, 8, 10 and 12 months old. Three leaves from each of four plants at each age were analyzed. Five parameters were recorded referring to the adaxial surface of each leaf, with a total of 15 records from repetitions and 60 per species at each age. The evaluation was performed in the spectral ranges from 360-740 nm (VIS) and 1000-2500 nm (NIR). Principal component analysis and linear discriminant analysis were performed. \u0000Main results: The influence of age differed within each species. In color data, the parameter with most variation among all samples was chromatic coordinate b*. In reflectance spectra (VIS), age of 12 months provided the best discrimination of species. Second derivative NIR spectra produced the best results of external prediction of Linear Discriminant Analysis models based on leaves of 12-month-old trees. \u0000Research highlights: Observation of color parameters and VIS/NIR spectroscopy have potential utility for discrimination of Eucalyptus species based on their green leaves.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":"1 3-4","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41304154","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

Prescribed burning in Pinus cubensis-dominated tropical natural forests: a myco-friendly fire-prevention tool 在以松为主的热带天然林中进行规定的焚烧：一种对真菌友好的防火工具

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-06-23 DOI: 10.5424/fs/2022312-19318

Francisco Durán-Manual, J. Espinosa, Edelmys Pérez-Pereda, Olaya Madiavilla, Gretel Geada-López, T. Dejene, Ignacio Sanz-Benito, P. Martín-Pinto, Luis W. Martínez-Becerra

{"title":"Prescribed burning in Pinus cubensis-dominated tropical natural forests: a myco-friendly fire-prevention tool","authors":"Francisco Durán-Manual, J. Espinosa, Edelmys Pérez-Pereda, Olaya Madiavilla, Gretel Geada-López, T. Dejene, Ignacio Sanz-Benito, P. Martín-Pinto, Luis W. Martínez-Becerra","doi":"10.5424/fs/2022312-19318","DOIUrl":"https://doi.org/10.5424/fs/2022312-19318","url":null,"abstract":"Aim of study: To evaluate the effects of two different prescribed burning strategies on ectomycorrhizal (ECM) fungal species in Pinus cubensis-dominated natural forest. \u0000Area of study: Yateras Silvicultural Base Business Unit, Guantánamo, Cuba. \u0000Material and methods: In June 2015, six plots (20 × 50 m) were subjected to forward or back burning. Nine interval samplings (performed 1 week before and up to 120 days after prescribed burning) were undertaken to determine the total number of sporocarps and to evaluate the effect of fire on the soil. \u0000Main results: Eight ECM species were collected from the study plots. Suillus sp. and Amanita muscaria started fruiting 15 and 60 days after the fire, respectively. Boletus sp., Suillus brevipes, Suillus decipiens, Suillus sp., Amanita muscaria, Lactarius semisanguifluus, Scleroderma stellatum and Pisolithus arhizus were found before and after prescribed burning. Sporocarp numbers showed an increasing trend after fire and significantly recovered 75 days after forward or back burning and were significantly higher 120 days after forward burning compared to unburned plots. The ECM fungal community in the heading fire and the backfire plots did not differ significantly. However, non-metric multidimensional scaling confirmed that ECM composition differed over time. According to a Mantel test, the sampling time after prescribed burning accounted for 64% of the variation in ECM composition, followed by edaphic factors (26%) such as organic matter and Na. \u0000Research highlights: This preliminary study suggests that low-intensity prescribed burning does not have a negative effect on ECM fungal dynamics in humid tropical forests.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45343758","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: 2

Susceptibility to Phytophthora cinnamomi of six holm oak (Quercus ilex) provenances: are results under controlled vs. natural conditions consistent? 六个霍姆橡树（Quercus ilex）种源对肉桂疫霉菌的易感性：在受控条件下与自然条件下的结果一致吗？

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-06-13 DOI: 10.5424/fs/2022312-17977

Manuela Rodríguez-Romero, E. Cardillo, Ramón Santiago, F. Pulido

{"title":"Susceptibility to Phytophthora cinnamomi of six holm oak (Quercus ilex) provenances: are results under controlled vs. natural conditions consistent?","authors":"Manuela Rodríguez-Romero, E. Cardillo, Ramón Santiago, F. Pulido","doi":"10.5424/fs/2022312-17977","DOIUrl":"https://doi.org/10.5424/fs/2022312-17977","url":null,"abstract":"Aim of study: Quercus forests are being affected by severe decline and mortality. The oak decline is associated with the soilborne pathogen Phytophthora cinnamomi (Pc), among others. This work aims to determine if Quercus ilex growing in Pc-infested soils show mortality differences according to their provenance in the field. It also evaluates whether the most tolerant provenances are those with the greatest constitutive chemical defences. \u0000Area of study: Acorns from six Spanish National Parks with natural presence of Q. ilex were collected for sowing in the greenhouse and later be planted on soils naturally infested by Pc in the surroundings of Plasencia, western Spain. \u0000Materials and methods: Seedlings were planted in four field plots located in two areas with oak decline: 153, 156, 157 and 155 plants in plot I, II, III and IV, respectively. The presence and infection of Pc was confirmed before their installation and during the experiment. Symptoms, regrowth, mortality and development was recorded for four years. \u0000Main results: There was a high mortality (56.0-80.5%) with differences among provenances. The most tolerant provenances in the field coincided with those identified under greenhouse conditions in a previous test. Provenances with higher constitutive condensed tannins better tolerate the pathogen under both conditions. In the southern provenances, some families with higher tolerance and, therefore, candidates for use in reforestation programs in areas infected by Pc, were identified. \u0000Research highlights: The restoration of Pc-affected areas would be possible through the use of Q. ilex plant material with high constitutive defences, more tolerant to the pathogen.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43320634","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: 3

Fine-root chemical traits rather than morphological traits of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) plantations vary along an altitudinal gradient in Eastern China 杉木(Cunninghamia lanceolata, Lamb.)细根化学特征而非形态特征)人工林在中国东部沿海拔梯度变化

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-06-13 DOI: 10.5424/fs/2022312-18793

Wei Fan, Jingjing Wang, Huiling Wang, Peng Deng, Aiqin Li, Shasha Zhang, Xiaoniu Xu

{"title":"Fine-root chemical traits rather than morphological traits of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) plantations vary along an altitudinal gradient in Eastern China","authors":"Wei Fan, Jingjing Wang, Huiling Wang, Peng Deng, Aiqin Li, Shasha Zhang, Xiaoniu Xu","doi":"10.5424/fs/2022312-18793","DOIUrl":"https://doi.org/10.5424/fs/2022312-18793","url":null,"abstract":"Aim of study: To explore the different patterns of fine-root traits by elucidating changes in their chemistries and morphologies in Chinese fir plantations along an altitudinal gradient. \u0000Area of study: National Mazongling Nature Reserve (Anhui Province). \u0000Material and methods: Soil and fine roots (≤ 2 mm) samples were extracted from three soil layers (0-10 cm, 10-20 cm, and 20-30 cm) at four altitudes (750 m, 850 m, 1000 m, and 1150m), after which their nutrient concentrations and morphological traits, respectively, were quantified. We employed mixed model ANOVA to test the effects of altitude, soil layer, and their interactions on the characteristics of soil and fine roots. The relationships between the functional traits of fine roots and climate, soil and stand structures were evaluated by the standard major axis regression and the structural equation model. \u0000Main results: The chemical traits of fine roots were higher at medium altitudes (which decreased significantly with the soil layer). In contrast the morphological traits of fine roots did not change significantly. In chemical traits, both altitude, organic matter components, and soil total phosphorus (TP) exerted dominant effects on fine-root N, and both altitude and soil TP exerted dominant effects on fine-root P. However, in morphological traits, we found that altitude and soil C:N were crucial impact factors. \u0000Research highlights: Fine roots might preferentially adjust their chemical traits rather than morphological traits to facilitate higher root efficiencies in response to variable environmental conditions.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42893244","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: 2

Species composition and specific aspects of the Green Tree Retention structure in unmanaged mixed forests in Asturias (northern Spain) 阿斯图里亚斯（西班牙北部）未经管理的混合林中绿树保留结构的物种组成和具体方面

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-05-30 DOI: 10.5424/fs/2022312-18230

J. J. Gorgoso-Varela

{"title":"Species composition and specific aspects of the Green Tree Retention structure in unmanaged mixed forests in Asturias (northern Spain)","authors":"J. J. Gorgoso-Varela","doi":"10.5424/fs/2022312-18230","DOIUrl":"https://doi.org/10.5424/fs/2022312-18230","url":null,"abstract":"Aims of the study: i) To characterize the species composition and stand variables in a Green Tree Retention (GTR) structure obtained as result of applying an uneven aged silviculture system based on the BDq method; ii) to conduct a biometric study of these components of the GTR. \u0000Area of study: Asturias (northern Spain). \u0000Material and methods: The GTR system included three groups of trees: non-commercial species, trees destined for production of edible fruits (Castanea sativa) and veteran trees (with DBH>52.5 cm, established by the BDq method) in 6 strata of the fourth Spanish National Forest Inventory (SNFI4). The method was applied to trees up to DBH at which are then classified as veteran. The other groups are excluded from management. A biometric study of these components was conducted by analysis of the extreme value distributions of maximum and minimum diameters by fitting the Gumbel Cumulative Distribution Function (CDF). The goodness of fit was evaluated with the Kolmogorov-Smirnov statistic (Dn), the Cramér von Mises criterion (W2), the bias and the mean squared error (MSE). \u0000Main results: The Gumbel CDF generally produced good results, and the best fits were obtained for maximum diameters. The Dn values were generally low or normal. The values of W2 and the MSE are consistent with the Dn. As the mean value of the biases is always positive, the Gumbel CDF tends to underestimate the real distributions. \u0000Research highlights: The values obtained for the parameters can help in determining several aspects of the structure of the GTR and thus help in forest management decision-making.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41941951","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

The effect of flowering stage on distribution modelling performance: A case study of Acacia dealbata using maximum entropy modelling and RPA images 花期对分布建模性能的影响:基于最大熵建模和RPA图像的金合欢案例研究

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-05-30 DOI: 10.5424/fs/2022312-18787

Antonio Vázquez de la Cueva, Fernando Montes Pita, I. Aulló-Maestro

{"title":"The effect of flowering stage on distribution modelling performance: A case study of Acacia dealbata using maximum entropy modelling and RPA images","authors":"Antonio Vázquez de la Cueva, Fernando Montes Pita, I. Aulló-Maestro","doi":"10.5424/fs/2022312-18787","DOIUrl":"https://doi.org/10.5424/fs/2022312-18787","url":null,"abstract":"Aim of study: To classify and validate the coverage of Acacia dealbata by stratifying its area into three different flowering stages using remotely piloted aircraft (RPA)-derived image orthomosaics. \u0000Area of study: We selected three sites in the west of Ourense province (Galicia, Spain). This area is the eastern cluster of A. dealbata populations in Galicia. \u0000Material and methods: We used a multirotor RPA equipped with an RGB and a multispectral camera. The flights were carried out on 10th and 11th March 2020. We performed a visual interpretation of the RGB orthomosaics to identify the patches of A. dealbata in three different flowering stages. We then used a maximum entropy (MaxEnt) programme to estimate the probability of A. dealbata presence in each study site at each of the three flowering stages. \u0000Main results: The performance of the MaxEnt models for the three flowering stages in each of the three study sites were acceptable in terms of ROC area under the curve (AUC) analyses the values of which ranged from 0.74 to 0.91, although in most cases was greater than 0.80, this being an improvement on the classification without stratification (AUC from 0.73 to 0.86). \u0000Research highlights: Our approach has proven to be a valid procedure to identify patterns of species distributions at local scale. In general, the performance of the models improves when stratification into flowering stages is considered. Overall accuracy of the presence prediction maps ranged from 0.76 to 0.91, highlighting the suitability of this approach for monitoring the expansion of A. dealbata.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44335209","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