Factors affecting pine processionary moth (Thaumetopoea pityocampa) incidence in Mediterranean pine stands

Descriptive variables considered in the analysis of factors affecting pine processionary moth (Thaumetopoea pityocampa) incidence in 98 pine stands in Guadarrama and Malagón mountains (central Spain). <br> Azcárate, FM; Seoane, J.; Silvestre, M. 2023. Factors affecting pine processionary moth (<em>Thaumetopoea pityocampa</em>) incidence in Mediterranean pine stands: A multiscale approach. <em>Forest Ecology and Management</em>, 529: 120728. https://doi.org/10.1016/j.foreco.2022.120728. <br> These variables were recorded at three scales: - stand: area covered by pine trees within a 1 ha circle [56.4 radius] centred in the sampling points (that is, disregarding the cover of other tree and shrub species) - plot: 1 ha circle, including vegetation other than the pine stands. - locality: 10 ha circle (179 m radius) centred in the sampling points. <br> Variables were transformed and z-standardised previous to modelling. See the above publication, supplementary material I, for the rationale, detailed description and source of these variables. See table 1 for the observed range. <br> The dataset is provided as a .xlsx worksheet with three sheets: - data: variable values - README: description of variables in data sheet - references: references cited in README <br> Some formatting has been added to help readability.

本数据集收录西班牙中部瓜达拉马山与马拉贡山的98个松林林分中，用于分析松异舟蛾（Thaumetopoea pityocampa）发生情况影响因子的相关描述性变量。
本数据集相关研究文献引自：Azcárate FM、Seoane J、Silvestre M，2023。《地中海松林林分松异舟蛾发生的影响因子：多尺度研究方法》，刊载于《森林生态与经营（Forest Ecology and Management）》第529卷，文章编号120728，DOI：10.1016/j.foreco.2022.120728。

本次研究的变量按三类尺度开展观测：
1. 林分尺度（stand）：以采样点为中心、半径56.4米（对应1公顷面积）的圆形区域内的纯松林覆盖面积，即不计入其他乔木与灌木物种的盖度；
2. 样方尺度（plot）：以采样点为中心的1公顷圆形区域，包含松林以外的其他植被类型；
3. 区域尺度（locality）：以采样点为中心、半径179米（对应10公顷面积）的圆形区域。

所有变量在建模前均已完成转换与Z标准化（z-standardised）处理。相关变量的理论依据、详细说明与数据来源可参阅上述论文的补充材料I；变量的观测取值范围详见表1。

本数据集以.xlsx工作簿格式提供，内含三个工作表：
- data：存储各变量的实测数值；
- README：对data工作表中的变量进行详细说明；
- references：收录README中引用的全部参考文献。

本数据集已优化格式以提升可读性。