A5101536359- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Tree-ring climate responses
- Ecology and Vegetation Dynamics Studies
- Wood Treatment and Properties
- Lignin and Wood Chemistry
- Bamboo properties and applications
- Marine and coastal ecosystems
- Ecosystem dynamics and resilience
- Agricultural and Food Sciences
- Fire effects on ecosystems
- Tree Root and Stability Studies
- Microbial Community Ecology and Physiology
- Plant responses to water stress
- Soil Carbon and Nitrogen Dynamics
- Physiological and biochemical adaptations
- Species Distribution and Climate Change
- Wastewater Treatment and Nitrogen Removal
Institute of Botany
2024
Chinese Academy of Sciences
2024
Beijing Forestry University
2016-2023
Tree rings have long been used to calibrate the net primary production (NPP) time-series predicted by process-based models, based on an implicit assumption that ring-width indices (RWI) can well reflect temporal NPP change. However, this has seldom tested systematically. In study, 36 plots were set in three forest types from four sites along a latitudinal gradient northeast China. For each plot, we constructed chronologies and stand of past 20 years examine: is RWI good proxy inter-annual...
Abstract Background Global warming has brought many negative impacts on terrestrial ecosystems, which makes the vulnerability of ecosystems one hot issues in current ecological research. Here, we proposed an assessment method based IPCC definition vulnerability. The exposure to future climate was characterized using a moisture index (MI) that integrates effects temperature and precipitation. Vegetation stability, defined as proportion intact natural vegetation remains unchanged under...
Leaf nitrogen (N) and phosphorus (P) resorption is a fundamental adaptation strategy for plant nutrient conservation. However, the relative roles that environmental factors functional traits play in regulating N P remain largely unclear, little known about underlying mechanism of affecting resorption. Here, we measured leaf 13 leaf, petiole, twig 101 representative broad-leaved tree species our target subtropical transitional forests. We integrated these multiple into economics spectrum...
Process-based models are basic tools for predicting the response of forest carbon to future climate change. The have commonly been tested their predictions spatial variation in productivity, but much less ability predict temporal variation. Here, we explored methods test with tree rings, using BIOME-BGC as an example. We used net primary productivity (NPP) data and rings collected from five major types along altitudinal gradient Mt. Changbai, northeast China, local-parameterized model. first...
Abstract Thermal treatment is an effective method for improving the dimensional stability of wood; however, it typically requires high temperatures. To achieve low-temperature heat treatment, this study employed wood samples impregnated with 10 % tannin acid (TA) and examined their changes in chemical components after at various initial moisture content levels. The results revealed that TA-10 %-HT group exhibited enhanced stability. Specifically, both tangential radial swelling decreased by...
Aims This research examined the different response of tree growth to climate change at early, middle, late and matured successional stages Korean pine (Pinus koraiensis) broadleaf mixed forest.Methods used dendroecological methods analyze radial forests in climatic Shengshan Nature Reserve Heilongjiang.Important findings Chronology statistics indicated that sensitivity inter-annual variability decreased from early later stage.Meanwhile, influence some indices also changed during...
采用最大可能数法对平原河网地区不同氮污染程度河道水体中浮游、颗粒附着及底泥中的氨化、亚硝化、硝化和反硝化菌进行测定,研究水体氮污染程度对氮循环菌不同种群的影响效应及其分布特征. 结果表明,浮游、颗粒附着和底泥中亚硝化菌的丰度随着水体氮污染程度的增加而升高,但不同氮污染程度下氮循环菌种群结构组成之间差异不大,而浮游、颗粒附着及底泥生活类型之间的氮循环菌种群结构组成存在较大差异,其中浮游与底泥中氮循环菌种群组成结构之间差异最大. 在氮污染水体中,浮游、颗粒附着和底泥氮循环菌中均以氨化菌为优势种群,显著高出其他氮循环菌种群多个数量级,而亚硝化菌和硝化菌丰度相对较低,反硝化菌在水体悬浮颗粒物上存在相对较高的丰度,不同氮循环菌种群组成比例存在失衡现象.;To explore the effects of aquatic nitrogen pollution on cycling bacteria in plain river network, abundances planktonic, particle-attached and benthic (ammonifying...
1 北京林业大学林学院, 北京 100083; 2 辽宁省森林经营研究所, 辽宁丹东
Increasing drought associated with climate warming (i.e. hotter drought) is seriously threatening tree growth and survival across the world. Nevertheless, how functional traits stand factors interact gradient in affecting radial not well understood. North China has experienced recent decades. We sampled tree-ring from four forest types along an altitude China, examined two aspects of response to change: 1) temporal variability [mean sensitivity (MS) standard deviation (SD)]; 2) correlations...