Patterns of artificial avian nest predation by introduced rats in a fragmented laurel forest (Tenerife,Canary Islands)

The importance of introduced rats as damaging factors on island biotas is globally recognized. The predation of artificial avian nests by Ship rats (Rattus rattus) in fragmented laurel forests in Tenerife (Canary Islands) was explored. The influence of road edge, patch type, and position (ground versus tree) on nest survival in two forest remnants differing in conservation degree, were assessed using failure‐time analysis. Overall, nest predation was greater in the preserved than in the disturbed remnant. Nest predation also differed among and within patches, variation being greater within the disturbed remnant. The probability of nest failure was higher at the interior than along the road edge in both remnants, but the road edge effect on nest predation was more intense in the disturbed remnant. Predation pressure was higher in patches of mature, closed canopy or dense understorey with stump sprouting. Ground nests were predated at higher rates than tree nests at any location. These results contrast with other nest predation studies in fragmented landscapes where forest edges rather than the interior are more frequently used by predators. Predatory activity by rats seems negatively affected by forest disturbance and road edge effect. Overall, artificial nest predation patterns by rats confirm a potential predation risk for the avifauna of the Canarian laurel forest. This should be considered in implementing conservation management programmes.     

状态空间模型在区域森林景观生态经济研究中的应用

通过对江苏省溧阳地区森林景观进行生态经济研究 ,获取区域森林景观的生态经济特征数据的基础上 ,结合森林动态数据 ,根据研究对象的系统机理建立状态空间模型。该模型可用于进行综合生态经济评价及其规划。文中应用状态空间模型进行区域森林景观生态经济功能的多目标规划.     

景观林健康经营评价指标体系构建研究

景观林健康经营是森林资源多功能经营的重要组成部分,基于景观生态学理论、森林美学理论、森林经营管理理论以及森林健康理论,提出了景观林健康经营的目标以及评价指标体系,该指标体系包括景观林生态系统自身健康、景观林经营健康和景观林效能健康3个层次共27个指标,应用AHP法确定了指标权重,并明确了各指标的计算方法,该研究对景观林的健康经营具有重要的指导意义。     

运用GIS网络视频技术实现林区防火远程监控

阐述了林区监控的重要性,探讨了如何运用GIS网络视频技术实现林区防火远程监控。     

山西管涔山林区植物多样性研究

管涔山林区高等植物有107科、340属、599种（含变种）,其中单属科有60个,单种属有217个,数量较多,所占比例较高,10属以上的科有9个,为世界广布科,10种以上的科有15个,含367个种,占总种数的61.27%.管涔山林区的植物种类集中在少数大科和较大科中,优势现象十分显著.乔木层的植物多样性随海拔高度的增加而减少,优势现象增强,灌木层只有1 800m以下出现,草本层在管涔山林区任何高度上都有分布,多样性指数高,随海拔高度变化不明显,但优势种有差异.     

森林旅游景区公路建设中的环保问题研究

在介绍森林旅游景区公路建设与环境保护技术的研究现状的基础上，对景区公路建设的特点及其基本要求进行了归纳，分析了景区公路建设对环境可能造成的破坏影响，结合公路建设中选线、水土流失防治等方面的问题提出了森林旅游景区公路建设中环境保护技术措施，为森林旅游景区的公路建设与环境保护这两方面的协调发展提供了一些参考依据。     

Chaotic Genetic Algorithm-Based Forest Harvest Adjustment

Forest harvesting adjustment is a decision-making, large and complex system. In this paper, we analysis the shortcomings of the traditional harvest adjustment problems, and establish the model of multi-target harvest adjustment. As intelligent optimization,chaotic genetic algorithm has the parallel mechanism and the inherent global optimization characteristics which are suitable for multi-objective planning the settlement of the issue, Specially in complex occasions where there are many objective functions and optimize variables. In order to solve the problem of forest harvesting adjustment, this paper introduces a genetic algorithm to the Forest Farm of Qiujia Liancheng Longyan for forest harvesting adjustment firstly. And the experimental result shows that the method is feasible and effective, and it can provide satisfactory solution for policy makers.     

对我国森林公园建设的思考——以乌金山国家森林公园建设规划为例

通过对乌金山国家森林公园总体规划的分析与思考,对我国当前森林公园建设中存在的一些问题进行了探讨,提出了森林公园建设的几点建议。     

Factors influencing anuran distribution in coastal dune wetlands in southern Brazil

We investigated the potential role of hydroperiod and habitat structural complexity as explanatory factors defining richness, abundance and spatial and temporal distribution of anurans in wetlands of coastal dunes. This survey was performed in 15 wetlands along the Atlantic coastal zone of southern Brazil. We identified 10 anuran species (nine in the adult and eight in the tadpole stage) distributed in seven genera from five families. The adult richness and abundance varied among the hydroperiod classes, but without temporal variations. Both tadpole richness and abundance varied temporally and both were influenced by hydroperiod. Adult anuran composition was associated with dry months and wetland area, whereas tadpole composition was associated with emergent and floating macrophytes, wetland area and vegetation cover. This study identified the importance of habitat structural complexity and hydroperiod in spatial–temporal distribution models of anurans.     

傣族“竜林”文化的生态意蕴

竜林文化是傣族一种特有的文化。透过这一文化,傣族人展示了他们对森林的生态取向,即以崇拜的方式敬仰森林,以禁忌的方式阻止人们对森林的破坏。借助这些措施,傣族竜林成为了保存完好的自然保护区,弥补了当地其他自然保护区缺乏干性季节性雨林植物的不足。竜林提供的水源、有机肥料和病虫害天敌为傣族人顺利进行稻作生产给予了天然保障,促使他们能够依托稻作农业得以延续和发展。