ORCHIDEE-MICT 模型代码

在生态系统模型ORCHIDEE中进行了关键模块的开发，以更准确地模拟青藏高原土地利用变化对生态系统碳源汇的影响。首先，开发了年龄组模块，成功将其应用于表征森林年龄结构和其他土地利用类型的年龄组。对原有植被功能型数量进行扩展，利用模型配置文件产生新的定制化植被功能型。定制化植被功能型将森林设置为6个年龄组，其他植被类型设置为2个年龄组，分别表示从幼龄到老龄，并根据不同植被类型的生长方程对不同年龄组设置其生物量阈值，以表征不同时刻各植被类型所处的年龄组。这一开发使得模型能够有效表征亚像元尺度上各植被类型的年龄组。其次，开发了不同年龄组之间和土地利用类型之间的转换模块，以及人工林管理和木材砍伐模块，使模型能够更准确地模拟土地利用变化对碳循环的影响。最后，整合了ORCHIDEE_GM版本中的草地管理和放牧模块，进一步丰富了生态系统模型的功能性。数据内容涉及年龄组模块、转换模块、人工林管理、木材砍伐以及草地管理等要素。这些模块的开发意义重大，为模拟青藏高原土地利用变化下的生态系统碳循环提供了关键技术支持，有助于深入理解人类活动对碳源汇的影响。数据来源于对ORCHIDEE模型的开发过程，加工方法包括对模型的功能扩展与定制化，根据不同植被类型和年龄组设定生物量阈值等关键参数。数据质量较高，是基于ORCHIDEE模型的扩展与改进，经过系统的模块设计与测试。然而，模型的精度和可靠性仍需要在实际应用中不断验证和完善。这些模块的开发为深入理解青藏高原土地利用变化对生态系统碳源汇的影响提供了关键工具。未来，可用于气候变化影响的评估、生态环境管理政策的制定以及碳汇优化管理的研究，为实现可持续发展和生态保护提供重要支持。

Key modules were developed in the ecosystem model ORCHIDEE to more accurately simulate the impacts of land use changes on ecosystem carbon source-sink dynamics over the Tibetan Plateau. First, an age cohort module was developed and successfully applied to characterize the age structure of forests and age cohorts of other land use types. The number of original plant functional types (PFTs) was expanded, and new customized plant functional types were generated via the model configuration file. For the customized PFTs, forests are divided into 6 age cohorts while other vegetation types are divided into 2 age cohorts, ranging from young to old age. Biomass thresholds were set for each age cohort based on the growth equations of different vegetation types, to characterize the age cohort that each vegetation type is in at any given time. This development enables the model to effectively characterize the age cohorts of each vegetation type at the sub-pixel scale. Second, a transition module between different age cohorts and land use types, as well as plantation management and timber harvesting modules, were developed to allow the model to more accurately simulate the impacts of land use changes on the carbon cycle. Finally, the grassland management and grazing modules from the ORCHIDEE_GM version were integrated, further enriching the functionality of the ecosystem model. The dataset covers key elements including the age cohort module, transition module, plantation management, timber harvesting, and grassland management. The development of these modules is of great significance, providing critical technical support for simulating the ecosystem carbon cycle under land use changes over the Tibetan Plateau, and facilitating in-depth understanding of the impacts of human activities on carbon source-sink dynamics. The dataset is derived from the development process of the ORCHIDEE model, with processing methods including functional expansion and customization of the model, and setting key parameters such as biomass thresholds for different vegetation types and age cohorts. The dataset is of high quality, as it is based on the expansion and improvement of the ORCHIDEE model, and has undergone systematic module design and testing. However, the accuracy and reliability of the model still need continuous validation and improvement in practical applications. The development of these modules provides a critical tool for in-depth understanding of the impacts of land use changes on ecosystem carbon source-sink dynamics over the Tibetan Plateau. In the future, it can be applied to the assessment of climate change impacts, the formulation of eco-environmental management policies, and research on carbon sink optimization management, providing important support for achieving sustainable development and ecological conservation.

搜集汇总

背景与挑战

背景概述

该数据集是ORCHIDEE-MICT模型代码，针对青藏高原土地利用变化对生态系统碳源汇的影响进行了关键模块开发，包括年龄组、转换、人工林管理和草地管理等模块，以增强模型在亚像元尺度上模拟植被年龄结构和碳循环的能力。数据以Fortran代码文件形式存储，大小为57.43 MB，适用于气候变化影响评估和生态政策研究，需通过申请获取。