Jingning Shi

Agricultural University Of Hebei | AUH · School of Economics and Management

Accurate measurements of ring-width series are essential for dendrochronological analyses. We present an R package MtreeRing for ring-width measurements on scanned digital images. A morphological alternate sequential filter is used for noise reduction in the original image. Ring boundaries are determined by the steepest negative slopes in the light...

2019/2/15更新： 本方法已经升级为R包MtreeRing，可以直接从CRAN下载（https://cran.r-project.org/package=MtreeRing）。该包在原有基础上提供了分水岭、Canny边缘检测等方法自动测量年轮宽度，并集成了图形用户界面方便初学者使用。 本页面原有链接已被移除

In mixed forests, the presence of several tree species with various ecological characteristics leads to complex stand dynamics driven by the species-specific resource-use efficiencies that ultimately drive forest productivity. In this study, we applied the concept of stand growth dominance (GD), together with the growth rates of trees as a function...

Biological rotation length is a key parameter of even-aged forest management. Future climate change is expected to affect forest growth and thus modify biological rotation age, but knowledge about the effect of climate change on the rotation for both timber production and carbon storage remains limited from process-based growth model. The biologica...

An improved understanding of the effects of thinning and climate on tree growth is essential to adopting adaptive forest management strategies under climate change. In this study, we developed a climate-sensitive individual-tree growth model for Changbai larch (Larix olgensis) in northeast China by fusing tree-ring and permanent sample plot data. W...

Competition is the major factor influencing crown recession rates and therefore plays an important role in height to crown base (HCB) modeling. However, few studies have directly investigated the effects of climate on HCB modeling. In this study, a climate-sensitive individual tree HCB model was developed using measurements from a total of 9902 Rup...

The Altai Mountains in Northwest China has a great potential for dendroclimatological studies. Dendrochronological and climatological response analysis potentials of the northwest China Altai Mountains are hitherto unexplored. In this study, for the first time we have developed chronology statistics and climate response growth analysis of Pinus sib...

This research investigated and compared the primary and secondary forests in the ecological core area of Hainan Island to provide information for forest restoration. The secondary forest was in the early successional stage, and the comparative analysis was about species composition, forest structure and species biodiversity. The result showed signi...