Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15070 |
Hierarchical global plant biophysical regions as potential analysis units | |
Randall B. Boone | |
2020-04-06 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | Regional and global vegetation simulations can be problematic when analysis units to which parameters are assigned do not align with plant productivity and phenology. Having a suite of predefined biophysical regions at a variety of scales that correspond to differences in plant productivity and phenology would allow analysts to select a set of analysis units at the scale needed. In other cases, environmental or social responses may be hypothesized to be related to differences in plant dynamics. One may compare the discrimination in such data that biophysical regions at different scales provide to determine which best distinguishes the responses in question, such that like responses fall within the same regions to the degree possible. If those relationships are significant, the responses may then be extrapolated based on the biophysical regions. I defined hierarchical biophysical regions based on plant productivity and phenology by clustering global 0.083 degree resolution normalized difference vegetation indices (NDVI) over a 10 year period. Agglomerative average‐linkage distances based on squared error between clusters were conducted using an iterative sampling approach to merge more than 2 million clusters into fewer and fewer clusters based on NDVI greenness profiles comprised of 240 values over 10 years, until all cells were in a single cluster. Greater and greater differences in greenness profiles were ignored at higher levels of the hierarchy. Using a difference increment of 0.1, 253 non‐duplicative sets of clusters were created, and 107 of those were included in animations that may be used to explore differences in global plant dynamics. Differences in clusters were quantified based on comparing the focal set of cluster results with 10 other cluster sets. Analysts may use the hierarchical clusters to improve the alignment of their parameter sets that inform plant growth and other dynamics with real‐world plant dynamics. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249012 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Randall B. Boone. Hierarchical global plant biophysical regions as potential analysis units[J]. Global Change Biology,2020. |
APA | Randall B. Boone.(2020).Hierarchical global plant biophysical regions as potential analysis units.Global Change Biology. |
MLA | Randall B. Boone."Hierarchical global plant biophysical regions as potential analysis units".Global Change Biology (2020). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Randall B. Boone]的文章 |
百度学术 |
百度学术中相似的文章 |
[Randall B. Boone]的文章 |
必应学术 |
必应学术中相似的文章 |
[Randall B. Boone]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论