CIRAD wood resistance to decay database

This dataset aggregates data extracted from the CIRAD wood resistance to decay database, describing 580 botanical wood species belonging to 338 genera, in Montpellier, France. WOOD RESISTANCE TO DECAY DATABASE The CIRAD wood resistance to decay database is a part of the general CIRAD wood database covering a wide range of technological properties, mainly physics and mechanics, anatomy, chemical composition, wood machining, etc. 580 wood species are described with measurements of mass loss for standard wood specimens against standard fungal strains, in standard laboratory conditions. All basic information about these tests including maximum, minimum and mean mas loss values for 10 specimens of the same provenance, were include in the database. These measurements were taken between 1953 and 1989 using the same standard protocols. Wood resistance to decay characteristics were measured on specimen from 1,875 trees corresponding to 580 botanical species and 338 genera. DESCRIPTION OF THE DATASET It consists in the following file: Cirad wood resistance to decay database - dataset‧xlsx General information The file is in XLSX format. Data sheets and data fields The dataset is made up of seven tabs (or sheets): five data sheets and two comment sheets. All these sheets are detailed below. Decay tests This sheet gathers the results from the 9842 tests in CTFT reference numerical order (472 tests have no N° CTFT) with the 14 followings characteristics: Species, Country (provenance of the tree), N° CTFT (laboratory code), Vernacular name, Year (of the test), Spec. type* (dimension of the specimen tested, T1 to T5), Duration (duration of the test, in week)), Nb FS (number of fungal strain used), FS (fungal strain used, see Comment decay sheet), Zone (HW, for heartwood or SW, for sapwood), Nb Spec. (number of specimens tested against the fungal strain), mean ML (mean mass loss, in %), min ML (minimum mass loss, in %), max ML (maximum mass loss, in %). * : T1 (30x10x5 mm); T2 (50x14x5 mm); T3 (50x14x14 mm); T4 (50x25x15 mm) ; T5 (50x17x17 mm) Decay + Chemistry T1 HW This second sheet gathers the results for 182 species. It was built from the Decay test sheet for the mass loss, using only heartwood specimen type T1 against the four standard fungal strains (F1, F2, F4, F6) and from the chemical data sheet (Gérard et al. 2019) for the chemical composition and density of the species common to both sheets. There are 15 characteristics: Family (corresponding families in CIRAD wood collection – Dataset), Genus, Species, mean ML (Mean value of mass losses for the 4 fungal strains, in %)), D*ML (Product of the two characteristics: density, in kg/m3, and mean mass loss for the species, in %), mean Nb (mean number of trees tested against the 4 fungal strains), Nb trees (number of trees in the chemical test), D (wood density, in kg/m3), AB ext (% extractive content in alcool-benzene solution), W ext (% extractive content in hot water), Ash (% mineral content), Silica (% silica content), Tot (total result of chemical analyses in %), Lig rel (relative lignin content in %), Pento rel (relative pentosan content in %), Cell rel (relative cellulose content in %). For lignin, pentosane and cellulose content, relative means that the proportion is based on the extracted mass instead of the initial dry mass, in order to avoid low values due to very high levels of extractives, not representative of the basic ligno-cellulosic matter. Decay + Chemistry T4 HW This sheet gathers the results for 100 wood species. It was built just like the precedent sheet but using only heartwood specimen type T4. Species T1 This sheet gathers the results for 219 species. It was built from the Decay test sheet for the mass loss, using only heartwood specimen type T1 against the four standard fungal strains (F1, F2, F4, F6). There are 18 characteristics: Species T1 (all species for specimen type T1), Nb Fi (number of tests for fungal strain Fi, i=1, 2, 4, 6, see Comment decay sheet), Mean (mean mass loss value for Fi), Min (minimum mass loss value for Fi), Max (maximum mass loss value for Fi), G mean (global mean mass loss for the 4 fungal strains F1, F2, F4 and F6). Species T4 This sheet gathers the results for 151 species. It was built just like the precedent sheet but using only heartwood specimen type T4. Comment decay + chemistry Explanations on resistance to decay characteristics and Chemistry characteristics Comment decay Explanations on parameters of resistance to decay tests and list of the fungal strains used for the 9842 tests.

本数据集整合自法国农业发展研究国际合作中心（Centre de coopération internationale en recherche agronomique pour le développement，简称CIRAD）的木材抗腐数据库（Wood Resistance to Decay Database），收录了法国蒙彼利埃地区的580个植物木种，隶属于338个属。

### 木材抗腐数据库
CIRAD木材抗腐数据库是CIRAD通用木材数据库的组成部分，该通用数据库涵盖了丰富的木材工艺性能数据，主要包括物理、力学、解剖学、化学成分、木材加工等领域。本数据库针对580个木种，在标准实验室条件下，通过标准真菌菌株对标准木材试样的作用，测定其质量损失情况。数据库收录了所有相关测试的基础信息，包括同一木种下10个试样的最大、最小及平均质量损失值。所有测试于1953年至1989年间开展，全程采用统一的标准试验规程。本次测试的试样取自1875棵树木，对应580个植物木种及338个属。

### 数据集说明
本数据集以XLSX格式存储，文件名为"Cirad wood resistance to decay database - dataset.xlsx"，包含7个工作表（sheets）：5个数据表与2个注释表，各工作表详情如下。

#### 抗腐测试表（Decay tests）
该表收录了9842项抗腐测试的结果，按CTFT参考编号排序（其中472项测试无CTFT编号），包含14项特征参数：物种名称、树木来源国、CTFT编号（实验室代码）、木材俗名、测试年份、试样类型*（T1至T5，各类型尺寸分别为：T1(30×10×5 mm)、T2(50×14×5 mm)、T3(50×14×14 mm)、T4(50×25×15 mm)、T5(50×17×17 mm)）、测试时长（单位：周）、所用真菌菌株数量、所用真菌菌株（详见抗腐注释表）、试样区域（HW为心材，SW为边材）、测试试样数量、平均质量损失（单位：%）、最小质量损失（单位：%）、最大质量损失（单位：%）。

*注：T1(30×10×5 mm)；T2(50×14×5 mm)；T3(50×14×14 mm)；T4(50×25×15 mm)；T5(50×17×17 mm)

#### T1心材抗腐+化学数据表（Decay + Chemistry T1 HW）
该表收录了182个木种的相关数据，其数据来源于两部分：一是从抗腐测试表中提取的T1型心材试样在4种标准真菌菌株（F1、F2、F4、F6）作用下的质量损失数据；二是从化学数据表（Gérard et al. 2019）中提取的上述共有物种的化学成分与木材密度数据。该表包含15项特征参数：科（对应CIRAD木材馆藏数据集的物种科属）、属、物种名称、4种真菌菌株作用下的平均质量损失（单位：%）、D*ML（木材密度，单位：kg/m³，与该物种平均质量损失的乘积）、测试平均树木数量、化学测试所用树木数量、木材密度（单位：kg/m³）、苯醇提取物含量（%）、热水提取物含量（%）、灰分含量（%）、二氧化硅含量（%）、化学分析总结果（%）、相对木质素含量、相对戊聚糖含量、相对纤维素含量。
针对木质素、戊聚糖及纤维素的相对含量，其计算基准为提取物质量而非初始干质量，以避免因过高的提取物含量导致的偏低结果，此类结果无法反映木材的基本木质纤维素组分特征。

#### T4心材抗腐+化学数据表（Decay + Chemistry T4 HW）
该表收录了100个木种的相关数据，构建方式与上述T1心材抗腐+化学数据表一致，但仅采用T4型心材试样。

#### T1物种数据表（Species T1）
该表收录了219个木种的相关数据，从抗腐测试表中提取T1型心材试样在4种标准真菌菌株（F1、F2、F4、F6）作用下的质量损失数据。该表包含18项特征参数：T1型试样对应物种、各真菌菌株（F1、F2、F4、F6）的测试数量、各菌株对应的平均质量损失值、各菌株对应的最小质量损失值、各菌株对应的最大质量损失值、4种菌株的整体平均质量损失。

#### T4物种数据表（Species T4）
该表收录了151个木种的相关数据，构建方式与上述T1物种数据表一致，但仅采用T4型心材试样。

#### 抗腐与化学特性注释表（Comment decay + chemistry）
该表用于解释抗腐特性与化学特性的相关参数说明。

#### 抗腐测试参数注释表（Comment decay）
该表用于解释抗腐测试的相关参数，并列出9842项测试所使用的全部真菌菌株列表。