应森林治疗类风湿关节炎的经验

介绍应森林教授治疗类风湿关节炎的经验。认为"邪、虚、毒、瘀"为类风湿关节炎的病机关键,临证时主张寒热并调、虚实兼顾,分期论治、各有侧重,活用验方、巧遣虫药。

基于“双毒学说”探讨分期论治痛风性关节炎

痛风(Gout)是由于单钠尿酸盐沉积引起的一种晶体性关节炎,属于中医"痹病"范畴。应森林教授根据多年临床实践经验,对痛风的病因病机、辨证论治有独到的见解,提出"双毒学说"为痛风性关节炎发病的主要病因病机,认为本病之核心病因病机在"毒",又因其发病时间、感邪性质、致病特点等不同,主张分期治疗,急性期(亦称外毒期或邪毒期)以"外感邪毒"为主,缓解期(亦称内毒期或伏毒期)以"内生伏毒"为主,基于"双毒学说"指导下分期治疗痛风性关节炎,恰可为痛风性关节炎分期论治提供新思路。

Analysis of Methodology for the Application of Stratified Random Sampling with Optimum Allocation： The Case Study of Forest Bioenergy

In this paper, analysis of methodology was realized for the application of stratified random sampling with optimum allocation in the case of a subject of research which concerns the rural population and presents high differentiations among the three strata in which this population could be classified. The rural population of Evros Prefecture （Greece） with criterion the mean altitude of settlements was classified in three strata, the mountainous, semi-mountainous and fiat population for the estimation of mean consumption of forest fuelwood for covering of heating and cooking needs in households of these three strata. The analysis of this methodology includes： （1） the determination of total size of sample for entire the rural population and its allocation to the various strata; （2） the investigation of effectiveness of stratification with the technique of analysis of variance （One-Way ANOVA）; （3） the conduct of sampling research with the realization of face-to-face interviews in selected households and （4） the control of forms of the questionnaire and the analysis of data by using the statistical package for social sciences, SPSS for Windows. All data for the analysis of this methodology and its practical application were taken by the pilot sampling which was realized in each stratum. Relative paper was not found by the review of literature.

Composition, diversity and distribution of tree species in response to changing soil properties with increasing distance from water source – a case study of Gobind Sagar Reservoir in India

Construction of big dams on rivers develops artificial lakes or water reservoirs which conceive alterations in soil properties of the upstream catchment area. An undulating topography and freckly soil properties cause ups and downs in tree diversity, composition and distribution. The study aimed to evaluate the effect of Gobind Sagar reservoir on soil properties relative to the distance from it and assess its effect on tree diversity, evenness and their distribution in tropical and subtropical forests. Based on data analysis it was found that the soil moisture and organic carbon decreased along with increasing distance from the reservoir. It played a significant role in varying tree diversity. The sites distributed within0-2 km showed significantly higher α and β-diversity indices. Tree species richness and diversity indices showed a strong correlation（p ＆lt; 0.05） with soil moisture and organic carbon content. Simpson＇s and Mc Intosh evenness indices showed a strong negative correlation with soil bulk density. Indirect Detrended Correspondence Analysis（DCA） identified soil moisture and soil organic carbon as two major environmental gradients that influenced tree diversity and their distribution in five tropical and four subtropical forests in an upstream catchment of the reservoir. Mixed forests inhabited moist sites andAcacia-Pinus forests showed an inclination to dry areas. Canonical Correspondence Analysis（CCA）revealed that the tree species in tropical forests were mainly affected by driving forces such as soil moisture,organic carbon and bulk density whereas, in subtropical forest tree species were influenced by elevation, soil p H, EC and clay content.

The Diversity of the Environmental Impact in Kurzeme

The analysis of environmental impact effects on forest ecosystems has a theoretical and practical nature. Many methods have been developed to determine characteristics and intensity of this impact. Methodologically, they can be divided into three groups： environmental parameter, bioindicative and combined methods. To evaluate the environmental impact a combined method was used in this study, it was based on trees as the bioindicators and their response reactions, and environmental parameter analysis. In this study the bioindicator was Norway spruce （Picea abies （L.） Karst.）, whose response reaction was used to explain total impact volumes of environmental factors in different places in the region of Kurzeme and try to interpret the causes of these differences. As the bioindicators criterion was used response reaction of Norway spruce during a period of 20 years, which was expressed with cumulative and annual additional volume increment, and was depending on the location of the stand and its morphometric characteristics. The empirical material was collected in Kurzeme region in 28 sample plots that are located on two transects and in one reference stand. For the evaluation the widths of the last 40 year growth rings were measured. To express the environmental impact in Kurzeme region a multiple regression model was developed, which explains the environmental impact in the volume of 68.2%, the rest part can be explained by the local conditions of each stand. It must be noted that methodology used in this study is very sensitive, thus, each of the nuances in the dynamics of volume＇s annual reduced additional increments has biological and ecological cause.

Efflux Estimate of Greenhouse Effect Gases in Three Different Forest Formations and the Influence of Soil

In carbon global cycle, the relationship between the terrestrial ecosystem and the atmosphere where there are, among others, gases that contribute to the greenhouse effect, has become object of relevant scientific interest. The content of organic matter in soil, expressed by its supplies as well as the organic matter degree of stability, are factors that can prevent the soil from acting as a drain and at the same time contribute for it to become a source of those gases. The variations in the way land is used in Brazil are factors responsible for the increase in emission of greenhouse effect gases. Based on these facts, this study was aimed to evaluate the CO2 and CH4 efflux using a gas retention chamber, and to associate these emissions to the organic carbon content in the soil. Two different areas were selected for the study, one in Tijuca Forest National Park, in a forest area, and the other at the Rio de Janeiro Federal Rural University campus. In the latter, the area was stratified in three sub areas according to the vegetation, use and water saturation degree. Samplings were performed during 8 months between 2013 and 2014.

Effects of pulse precipitation on soil organic matter mineralization in forests:spatial variation and controlling factors

Aims Pulse effects of precipitation cause soil organic matter to rapidly decompose and release CO2 in a short period.The pulse effects of precipitation are important for ecosystem C cycling and soil C balance,although their spatial variation in forest soils and the underlying mechanisms remain unclear.Methods Soil samples(0–10 cm)from 22 typical forest ecosystems in eastern China were used,to investigate the effects of simulated pulse precipitation on soil microbial respiration rates(Rs).We simulated pulsed precipitation to reach 65%water-holding capacity,the Rs was measured on a minute scale for 48 h.Important Findings Precipitation pulses can cause a rapid 1.70–38.12-fold increase in the rate of mineralized decomposing organic matter.Maximum Rs(_(Rs-soil-max)),cumulative Rs(A_(Rs-soil))and the time taken to arrive at the maximal Rs(T_(Rs-soil-max))were significant differences among different soil samples.Furthermore,the pulse effects in different climate zones were significantly different.R_(s-soil-max)(11.701μg C g^(-1)soil h^(-1))and A_(Rs-soil)(300.712μg C g^(-1) soil)were the highest in the mid-temperate zone.Soil chemical properties(total C and,N,pH and oxidation–reduction potential)and soil fractions were strongly correlated with the pulse effects in forest soils,but soil microbes contributed less.Our findings demonstrated that the pulse effects increase forest soil carbon emissions in the short term at a regional scale,and identified the factors with the greatest influence on this change.These findings help guide future studies on the C cycles of forest ecosystems and regulating ecosystem C cycles.

Implications of mass elevation effect for the altitudinal patterns of global ecology

The varied altitudinal gradient of climate and vegetation is further complicated by mass elevation effect(MEE), especially in high and extensive mountain regions. However, this effect and its implications for mountain altitudinal belts have not been well studied until recently. This paper provides an overview of the research carried out in the past 5 years. MEE is virtually the heating effect of mountain massifs and can be defined as the temperature difference on a given elevation between inside and outside of a mountain mass. It can be digitally modelled with three factors of intra-mountain base elevation(MBE), latitude and hygrometric continentality; MBE usually acts as the primary factor for the magnitude of MEE and, to a great extent, could represent MEE. MEE leads to higher treelines in the interior than in the outside of mountain masses. It makes montane forests to grow at 4800–4900 m and snowlines to develop at about 6000 m in the southern Tibetan Plateau and the central Andes, and large areas of forests to live above 3500 m in a lot of high mountains of the world. The altitudinal distribution of global treelines can be modelled with high precision when taking into account MEE and the result shows that MEE contributes the most to treeline distribution pattern. Without MEE, forests could only develop upmost to about 3500 m above sea level and the world ecological pattern would be much simpler. The quantification of MEE should be further improved with higher resolution data and its global implications are to be further revealed.

Residents’Perception of the Recreational Value of Forest Parks:A Case Study in Shanghai,China

Forest parks provide important recreational and tourism bene?ts to residents,so it is essential to know what residents’perceptions are regarding the recreational value of forest parks for participatory forest planning and management.This study investigated forest park recreational value in the physical,psychological,and social dimensions in Shanghai according to questionnaires completed by 658 respondents,and examined the relationships between recreational value and residents’social variables by multiple correspondence analysis(MCA).The results show the following:1)The recreational value of forest parks is perceived as most important in the psychological dimension,while in the social dimension it is appreciated the least.2)In terms of the differences in forest park recreational value in suburbs and rural areas,the social value in rural areas had significantly higher scores than in the suburbs,and the psychological value in suburbs is much higher than that in the rural areas.3)Regarding the social variables which characterize residents in suburbs and rural areas,females and younger groups tended to assign higher scores to recreational value than males and older groups.Moreover,citizens with low education or low income also assigned higher scores to recreational value compared to more educated or higher-income residents.The results of this study reveal the recreational value characteristics of Shanghai forest parks in the three dimensions,which can provide a scientific basis for the sustainable development of urban forest resources and contribute to reasonable planning and management.

Pliocene charcoals from Shanxi Province of China and their application to studies of prehistoric wildfires

Charcoals collected from the middle-late Pliocene sediments of the Taigu Basin,Shanxi Province,China,have been identified as Ulmus sp.(Ulmaceae),Prunus sp.,Maloidoxylon sp.(Rosaceae),and Maclura sp.(Moraceae).These taxa,along with the previously known fossils,indicate the occurrence of temperate climate and local wildfire at that time.Charcoals of trees and/or shrubs and the morphological changes of these charcoals demonstrate that crown fires and surface fires occurred in the Taigu Basin during the middle-late Pliocene.

Review on Application of Electromagnetic Theory and Technology to Forest Pests Control

Many domestic and international scholars have done a wide range of researches on electromagnetic and technology and have made some achievements. Electromagnetic technology has been used in forest pests control as a convenient and high-efficient physics means. This article summaries the current study of the electromagnetic biological effect and introduces the appfication of microwave, pulsed electromagnetic field and electrostatic field to forest pests control. The research direction and prospect of the application of electromagnetic theory and technology to forest pests control arc also discussed.

Functional traits influence plant survival depending on environmental contexts and life stages in an old-growth temperate forest

Aims Functional traits are usually used to predict plant demographic rates without considering environmental contexts.However,previous studies have consistently found that traits have low explanatory power for plant demographic rates.We hypothesized that accounting for environmental contexts instead of focusing on traits alone could improve our understanding of how traits influence plant demographic rates.Methods We used generalized linear mixed-effect models to analyse the effects of functional traits(related to leaf,stem,seed and whole plant),environmental gradients(soil nutrients,water and elevation)and their interactions on the survival dynamics of 14133 saplings and 3289 adults in a 9-ha old-growth temperate forest plot.Important Findings We found that environmental variables,neighbour crowding and traits alone(i.e.main effects)influenced plant survival.However,the effects of the latter two variables varied between saplings and adults.The trait–environment interactions influenced plant survival,such that resource conservative traits increased plant survival under harsh conditions but decreased survival under mild conditions.The elevational gradient was the most important environmental factor driving these effects in our plot.Our results support the hypothesis that functional traits influence plant survival depending on environmental contexts in local communities.These results also imply that one species with limited trait variation cannot occupy all environments,which can promote species diversity.

A reaction-diffusion model of forest boundary with seed dynamics

The density of forest cover based upon reaction diffusion model for mono-species of two age classes with seed dynamics is to be attempted. The prevailing densities of young, old species and airborne seedlings are resolved by homotopy perturbation method which is applied in reaction diffusion model. This model is utilized to verify the effect of the density of forest cover with the following variables namely seed reproduction, seed deposition, seed establishment rates, coefficients of aging of old tree and coefficients of mortality on the space variable.