Forest Systems最新文献_第3页

Additive modeling systems to simultaneously predict aboveground biomass and carbon for Litsea glutinosa of agroforestry model in tropical highlands 热带高原农林复合模式下同时预测胶荔枝地上生物量和碳的加性建模系统

IF 0.7 4区农林科学

Forest Systems Pub Date : 2023-03-01 DOI: 10.5424/fs/2023321-19780

Bao Huy, N. Q. Khiem, N. Q. Truong, K. Poudel, H. Temesgen

{"title":"Additive modeling systems to simultaneously predict aboveground biomass and carbon for Litsea glutinosa of agroforestry model in tropical highlands","authors":"Bao Huy, N. Q. Khiem, N. Q. Truong, K. Poudel, H. Temesgen","doi":"10.5424/fs/2023321-19780","DOIUrl":"https://doi.org/10.5424/fs/2023321-19780","url":null,"abstract":"Aim of study: To develop and cross-validate simultaneous modeling systems for estimating components and total tree aboveground biomass and carbon of Litsea glutinosa in an agroforestry model with cassava. \u0000Area of study: In the Central Highlands of Vietnam, the agroforestry model widely planted on fallow land of ethnic minorities is a mixture of 65% L. glutinosa in combination with 35% cassava (Manihot esculenta). \u0000Material and methods: Twenty-two 300-m2 circular sample plots were located, representing the range of tree age, plantation density, and a 6- 7 year rotation cycle. In each sample plot, one selected tree with a diameter at breast height equal to the plot quadratic mean diameter was destructively sampled. The relationships among tree aboveground biomass and carbon (AGB/AGC) and their components with dendrometric variables diameter, height, age, and crown area were examined using factor analysis. To fit systems of equations for AGB/AGC and their components, we compared two methods: weighted nonlinear least-squares (WNLS) and weighted nonlinear seemingly unrelated regression (WNSUR). \u0000Main results: The results of the leave-one-out cross-validation showed that the simultaneous WNSUR approach to modeling systems of four tree components, total biomass, and carbon provided better results than independent WNLS models. \u0000Research highlights: The simultaneous WNSUR modeling system provided improved and reliable estimates of tree components, total biomass, and carbon for L. glutinosa in an agroforestry model with cassava compared to independently fitted WNLS models.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46296382","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 digitalization framework of the National Forest System at 2020 2020年国家森林系统数字化框架

4区农林科学

Forest Systems Pub Date : 2023-02-28 DOI: 10.3832/efor4265-020

F Carbone, A Alivernini, M Bascietto, L Oreti, F Barbarese

引用次数: 1

How much carbon do Argentine Pampas Pinus radiata plantations store? 阿根廷潘帕斯辐射松种植园储存了多少碳？

IF 0.7 4区农林科学

Forest Systems Pub Date : 2023-02-28 DOI: 10.5424/fs/2023321-19703

P. Ferrere, A. Lupi

{"title":"How much carbon do Argentine Pampas Pinus radiata plantations store?","authors":"P. Ferrere, A. Lupi","doi":"10.5424/fs/2023321-19703","DOIUrl":"https://doi.org/10.5424/fs/2023321-19703","url":null,"abstract":"Aim of study: To quantify the biomass and carbon stored in the main ecosystem components in Pinus radiata D. don plantations across an age sequence in the Pampean region of Argentina. \u0000Area of study: Plantations were established on non-agricultural land, southeast of the province of Buenos Aires. \u0000Material and methods: Fourteen sites were selected of Pinus radiata plantations, 9-, 13-, 15-, 19- and 21-years-old, in a first forest rotation. Forty-two trees were destructively sampled, allometric functions were set and biomass was estimated for the different compartments (needles, branches, stem). Root biomass was estimated from equations adjusted by the sampling of twenty-four trees. At 4 sites, C-stock was determined in the tree component, in the forest floor and understory, and soil organic carbon (SOC) was determined to a 50 cm depth. \u0000Main results: C-stock in the tree component increased with stand age, whereas SOC and C-stock in the forest floor and understory were not related to stand age. The system-level C-stock was 273.1, 263.7, 269.7 and 324.1 Mg ha-1 for the 9-, 13-, 19- and 21-year-old stands. On average, 9% of the total system-level C-stock was in the soil, while 28% was in the tree biomass and 3% was in the forest floor and understory. \u0000Research highlights: The forestry component contributed to C sequestration with no changes in SOC-stocks reserves for the age range studied.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49525569","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

A comparison of artificial neural networks and regression modeling techniques for predicting dominant heights of Oriental spruce in a mixed stand 人工神经网络与回归建模技术预测东方云杉混交林优势高度的比较

IF 0.7 4区农林科学

Forest Systems Pub Date : 2023-02-20 DOI: 10.5424/fs/2023321-19134

İlker Ercanli, Ferhat Bolat, H. Yavuz

{"title":"A comparison of artificial neural networks and regression modeling techniques for predicting dominant heights of Oriental spruce in a mixed stand","authors":"İlker Ercanli, Ferhat Bolat, H. Yavuz","doi":"10.5424/fs/2023321-19134","DOIUrl":"https://doi.org/10.5424/fs/2023321-19134","url":null,"abstract":"Aim of study: This paper introduces comparative evaluations of artificial neural network models and regression modeling techniques based on some fitting statistics and desirable characteristics for predicting dominant height. \u0000Area of study: The data of this study were obtained from Oriental spruce (Picea orientalis L.) felled trees in even-aged and mixed Oriental spruce and Scotch pine (Pinus sylvestris L.) stands in the northeast of Türkiye. \u0000Material and methods: A total of 873 height-age pairs were obtained from Oriental spruce trees in a mixed forest stand. Nonlinear mixed-effects models (NLMEs), autoregressive models (ARM), dummy variable method (DVM), and artificial neural networks (ANNs) were compared to predict dominant height growth. \u0000Main results: The best predictive model was NLME with a single random parameter (root mean square error, RMSE: 0.68 m). The results showed that NLMEs outperformed ARM (RMSE: 1.09 m), DVM in conjunction with ARM (RMSE: 1.09 m), and ANNs (RMSE: from 1.11 to 2.40 m) in the majority of the cases. Whereas considering variations among observations by random parameter(s) significantly improved predictions of dominant height, considering correlated error terms by autoregressive correlation parameter(s) enhanced slightly the predictions. ANNs generally underperformed compared to NLMEs, ARM, and DVM with ARM. \u0000Research highlights: All regression techniques fulfilled the desirable characteristics such as sigmoidal pattern, polymorphism, multiple asymptotes, base-age invariance, and inflection point. However, ANNs could not replicate most of these features, excluding the sigmoidal pattern. Accordingly, ANNs seem insufficient to assure biological growth assumptions regarding dominant height growth.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49036218","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

Carbon storage in tree biomass dispersed in pastures in the arid Caribbean region of Colombia 哥伦比亚加勒比干旱地区牧场树木生物量的碳储存

IF 0.7 4区农林科学

Forest Systems Pub Date : 2023-02-14 DOI: 10.5424/fs/2023321-18932

Darwin F. Lombo, Esteban Burbano, Jaime A. Arias, Milton Rivera

{"title":"Carbon storage in tree biomass dispersed in pastures in the arid Caribbean region of Colombia","authors":"Darwin F. Lombo, Esteban Burbano, Jaime A. Arias, Milton Rivera","doi":"10.5424/fs/2023321-18932","DOIUrl":"https://doi.org/10.5424/fs/2023321-18932","url":null,"abstract":"Aim of study: To determine the importance in terms of carbon sequestration of dispersed trees in pasture lands as a greenhouse gas (GHG) mitigation measure. \u0000Area of study: The study was carried out in the municipality of Agustin Codazzi (Cesar Department, Colombia), between October 2020 and March 2021. \u0000Material and methods: We characterized 43.57 hectares dispersed amongst sixteen plots and all trees with a diameter at breast height > 10 cm were measured. Allometric equations were used to estimate aboveground biomass storage and species were classified in terms of use: timber products (TP) and non-timber products (NTP). \u0000Main results: A total of 750 trees were registered, 10 families and 28 species, of which NTP and TP represented 60.71% and 32.1% respectively. Aboveground carbon stock in trees in pastures was estimated at 7.15 + 4.8 Mg C ha-1. The most abundant species were Guazuma ulmifolia Lam. and Albizia saman (Jacq.) Merr. \u0000Research highlights: NTP species present a high potential for carbon storage and provide livestock assets. Placing value on carbon storage in rangelands can offset the low opportunity cost of trees in pastures by providing incentives for carbon storage, conservation, and recovery of threatened species.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46021955","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

Assessment of the interactions among net primary productivity, leaf area index and stand parameters in pure Anatolian black pine stands: A case study from Türkiye 安那托利亚纯种黑松林分净初级生产力、叶面积指数和林分参数相互作用的评价——以t<s:1> rkiye为例

IF 0.7 4区农林科学

Forest Systems Pub Date : 2023-02-14 DOI: 10.5424/fs/2023321-19615

Sinan Bulut, A. Günlü, S. Keleş

{"title":"Assessment of the interactions among net primary productivity, leaf area index and stand parameters in pure Anatolian black pine stands: A case study from Türkiye","authors":"Sinan Bulut, A. Günlü, S. Keleş","doi":"10.5424/fs/2023321-19615","DOIUrl":"https://doi.org/10.5424/fs/2023321-19615","url":null,"abstract":"Aim of study: To examine the relationships between net primary productivity (NPP) and leaf area index (LAI) and to modeling these parameters with stand parameters such as stand median diameter (dg), dominant height (htop), number of trees (N), stand basal area (BA) and stand volume (V). \u0000Area of study: Pure Anatolian black pine (Pinus nigra J.F. Arnold) stands in semi-arid climatic conditions in the Black Sea backward region of Türkiye. \u0000Material and methods: In this study, the Carnegie-Ames-Stanford Approach model was used to calculate NPP; LAI, dg, htop, N, BA and V were calculated in 180 sample plots. The relations between NPP and LAI with stand parameters were modeled using multiple regression analysis, support vector machines (SVM) and deep learning (DL) techniques. Relationships between NPP and LAI were investigated according to stand developmental stages and crown closure classes. \u0000Main results: The highest level of relations was obtained in the stands containing the a-b developmental stages (r=0.84). The most successful model in modeling NPP with stand parameters was obtained by DL method (model R2=0.64, test R2=0.51). Although DL method had higher success in modeling LAI with stand parameters, SVM method was found to be more successful in terms of model-test fit, and modeling success in independent data set. \u0000Research highlights: Grouping parameters affecting NPP and LAI increased the level of correlation between them. In modeling NPP and LAI in relation to stand parameters, machine learning algorithms performed better than linear approach. The overfitting problem can be eliminated substantially by including arguments such as early stopping, network reduction and regularization in the network structure.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41426877","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

ModERFoRest: A new software for assessing the environmental performance of forest species ModERFoRest：一种评估森林物种环境绩效的新软件

IF 0.7 4区农林科学

Forest Systems Pub Date : 2023-02-09 DOI: 10.5424/fs/2023321-19406

E. López-Senespleda, Rafael ALONSO-PONCE, R. Ruiz-Peinado, V. Gómez, R. Serrada, G. Montero

{"title":"ModERFoRest: A new software for assessing the environmental performance of forest species","authors":"E. López-Senespleda, Rafael ALONSO-PONCE, R. Ruiz-Peinado, V. Gómez, R. Serrada, G. Montero","doi":"10.5424/fs/2023321-19406","DOIUrl":"https://doi.org/10.5424/fs/2023321-19406","url":null,"abstract":"Aim of study: We introduce the software ModERFoRest (Modelling Environmental Requirements for Forest Restoration), which is a tool to estimate the environmental requirements and environmental performance of the main forest tree species growing in Spain. \u0000Area of study: Two of their modules have been developed to be applied mainly in Spain, but the main section can be used elsewhere as long as the user provides with presence data and environmental information. \u0000Material and methods: ModERFoRest has been programmed in C++, also using the Armadillo library for algebraic computation. The application can be downloaded from the INIA website (https://www.inia.es/serviciosyrecursos/recursosinformaticos/modernforest/Paginas/ModERFoRest.aspx) where there are also more accessible resources (currently only in Spanish language). \u0000Main results: ModERFoRest provides three basic utilities, firstly, to select the optimal species to be used for forest restoration, at local or regional scale, among the 22 most important taxa or formations in Spain, based on ecological criteria and physiographic, climatic and edaphic information. Secondly, to explore the potential distribution areas of the species using the ecological niche models and algorithms developed throughout different projects on the autecology of the species over the last 55 years. Finally, the application provides the option of comparing different areas of the species ecologically, in order to obtain the most suitable reproductive material for the forest site under study. \u0000Research highlights: Users can also run not only recent but also future climate scenarios in order to simulate the distribution of ecological species and use the results in reforestation programmes and planning.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48643864","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

Cognitive social capital and local forest governance: community ethnomycology grounding a mushroom picking permit design 认知社会资本与地方森林治理——基于蘑菇采摘许可证设计的社区人种学

IF 0.7 4区农林科学

Forest Systems Pub Date : 2023-02-09 DOI: 10.5424/fs/2023321-19673

E. Górriz-Mifsud, L. Secco, Riccardo Da Re, Elena Pisani, J. Bonet

{"title":"Cognitive social capital and local forest governance: community ethnomycology grounding a mushroom picking permit design","authors":"E. Górriz-Mifsud, L. Secco, Riccardo Da Re, Elena Pisani, J. Bonet","doi":"10.5424/fs/2023321-19673","DOIUrl":"https://doi.org/10.5424/fs/2023321-19673","url":null,"abstract":"Aim of study: The local ecological knowledge shared in rural communities shapes their norms for using their nearby open-access natural resources. We suggest a method to analyse this form of cognitive social capital with an application to a mushroom picking permit. \u0000Area of study: Poblet forest in Catalonia (NE Spain). \u0000Material and methods: we applied semi-structured questionnaires to pickers in four municipalities and to the governing body of the protected area. Our methodology assesses cognitive social capital combining three instruments: (i) inter-quartile ratio indexes for community cohesion, (ii) pair-wise comparisons across social groups (pickers and decision-makers or DM), and (iii) correlations for mental models linking perceived ecological, social and economic challenges with foreseen solutions. \u0000Main results: Analogous perceptions between DM and local pickers were found in most mushroom-related problems, which align with most picking permit design features. The perceived dissimilar behaviour between local and foreign pickers, the need for forest tending –addressing the wildfire risk–, and trash left in the forest is shared among pickers and DM. Moreover, some mental models of the DM showed statistically consistence. At the individual picker level, mushroom eco-literacy relates to family learning and proximity to DM, while links between pickers and DM correlate with increased forest profitability expectations. \u0000Research highlights: Strong convergence in cognitive indicators aggregated at the town level indicate a single hermeneutic community among local pickers, which seems to underlie the large permit acceptance but did not explain the differential permit uptake –thus, structural social capital emerges as complementary predictor.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46446715","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

Short communication: Maritime pine natural regeneration in Coastal Central Portugal: Effects of the understory composition 短交流:葡萄牙中部沿海海松自然更新:林下植被组成的影响

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-11-15 DOI: 10.5424/fs/2022313-19351

Diana Rodrigues, S. Corticeiro, P. Maia

{"title":"Short communication: Maritime pine natural regeneration in Coastal Central Portugal: Effects of the understory composition","authors":"Diana Rodrigues, S. Corticeiro, P. Maia","doi":"10.5424/fs/2022313-19351","DOIUrl":"https://doi.org/10.5424/fs/2022313-19351","url":null,"abstract":"Aim of study: To study the natural dynamics of Pinus pinaster natural regeneration in a post-fire scenario in three populations of Coastal Central Portugal, with severe ecological degradation due to plant invasions, and partially affected by the 2017 wildfires. \u0000Area of study: Three P. pinaster populations, located along a geographic gradient of about 140 km on Coastal Central Portugal: Mira, Tocha and Leira. \u0000Material and methods: The density and establishment success of P. pinaster regeneration was studied in burnt and unburnt forest stands. Special focus was given to the effects of the cover by native and invasive species (mainly Acacia longifolia) on pine regeneration. \u0000Main results: Regeneration values considered sustainable (over 0.3 seedlings·m-2) were recorded in all three populations in burnt and unburnt plots, where only one of the three study sites showed signs of establishment difficulty. We recorded high levels of invasion which showed a negative relationship with regeneration density. \u0000Research highlights: The cover of invasive flora was negatively correlated with pine regeneration, while the presence of native flora showed positive relations with density and height of pine natural regeneration.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46426709","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

Forecasting production in thinned clonal stands of Tectona grandis in Eastern Amazonia 亚马逊东部柚木无性系疏伐林分产量预测

IF 0.7 4区农林科学

Forest Systems Pub Date : 2022-11-14 DOI: 10.5424/fs/2022313-19379

Mario L. Dos Santos, E. P. Miguel, Cassio R. C. Dos Santos, Hallefy J. De Souza, W. B. R. Martins, M. Lima, J. Arce, J. M. Silva

{"title":"Forecasting production in thinned clonal stands of Tectona grandis in Eastern Amazonia","authors":"Mario L. Dos Santos, E. P. Miguel, Cassio R. C. Dos Santos, Hallefy J. De Souza, W. B. R. Martins, M. Lima, J. Arce, J. M. Silva","doi":"10.5424/fs/2022313-19379","DOIUrl":"https://doi.org/10.5424/fs/2022313-19379","url":null,"abstract":"Aim of the study: We investigated the most suitable thinning ages and intensities to maximize productivity and minimize the rotation age of Tectona grandis clonal plantations in the Brazilian Eastern Amazon. \u0000Area of study: Capitão Poço, State of Pará, Eastern Amazonia, Brazil. \u0000Materials and methods: We used diameter, height, and volume data from 72 permanent plots measured on nine occasions. We determined the classification of forest sites using the generalized algebraic difference approach (GADA). Clutter’s segmented model was used to simulate different intensities of basal area reduction, determining the technical ages according to the projected increments. \u0000Main results: The polymorphic site curves generated by the GADA method revealed that there were sites with different productive characteristics. The Clutter model produced compatible projections of basal area and volume that followed the behavior of the productivity classes. The final production was maximized when three thinning intensities (basal area reductions) were applied: 1st thinning (50%), between the ages of 3.5 to 4.2 years; 2nd thinning (50%), between the ages of 6.1 to 7.3 years; and 3rd thinning (25%), between the ages of 10.6 to 12.8 years. Projected rotation ages ranged from 13.9 to 16.6 years earlier than seminal plantings. The simulations increased the net volume by 8.3%, on average, compared to no thinning. \u0000Research highlights: Simulations with three thinnings maximized production compared to the no thinning scenario. The time interval between thinnings was less than five years. The research results can help forest management decision-making and reveal production increases of T. grandis clonal stands in a shorter time.","PeriodicalId":50434,"journal":{"name":"Forest Systems","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47747064","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