Strategies on natural forest protection of collective forest area in minority nationality community in China

In the recent 20 years, it is a trend that forest will be distributed to villagers to manage in the world. Also in China, “forestry three determinations” has been carried out since 1980, and many new forestry devolutions have been put forward to and come into being. To face the fact of overusing up natural forest to result in the deterioration of ecology environment, the strategy of natural forest protection project (NFPP) is raised after the heavy flood in 1998. Now, it is paid close attention to systematically study to carry out the strategies of NFPP in collective forest area, especially in the community of minority nationalities. Based on the case of forest resource management in Datu Miao Village, the experience of its forest management in the past is analyzed and the strategies of NFPP in collective forest area are put forward. Foundation item: This project is a part of research project “forest devolution management of IFAD/CIFOR” Biography: L{upuo} Ming-can (1961-), maie, associate professor, vice director of post-graduate school of Southwest Forestry College, Kunming 650224, P.R. China. Responsible editor: Song Funan     

颗粒剂农药防治辣椒疫病的研究

选择了５种杀菌剂，将其制成具有缓释性能的颗粒剂，施在辣椒根茎基部防治辣椒疫病。室内接种试验，有４种颗粒剂施药７ｄ后防效１００％，２１ｄ后防效９５％以上。田间试验防效平均在８４％以上，连续３年田间应用，防效为８０％左右。     

链锯链轮设计计算理论的研究

为了满足链锯的链速向高速方向发展，锯链的节距应变小。现有国内外有关链轮的设计计算理论只适用于锯链节距为１５ｍｍ或１５ｍｍ以上的锯链与链轮的正确啮合与链轮设计。而节距ｔ≤１０．２６ｍｍ的链轮设计应用现有的链轮设计计算理论进行设计有很大的局限性。通过对国内外不同节距锯链结构，外形尺寸以及锯链与轮链啮合实际状态的比较、分析，研究出锯链与链轮的正确啮合的理论，并建立了一整套较完善的链轮设计计算理论。依据本     

Adsorption of Microcystin LR and LW on Suspended Particulate Matter (SPM) at Different pH

The occurrence of microcystins (MC) during aquatic blooms of cyanobacteria in eutrophicated freshwater body has increasingly become an environmental and health concern worldwide. An experimental study was conducted to investigate the adsorption of two common variants of microcystins, MCLR and MCLW, onto SPM at different pH values. The results showed that most microcystins spiked into an SPM solution with the concentration of 0.25g/l was adsorbed onto solids at pH3 (>95%) and 7 (>85%). At pH13, the proportion of adsorbed microcystin decreased to 8–29% for MCLR and 38–47% for MCLW. The adsorption of MCLR and MCLW onto SPM fitted well with S type of Freundlich isotherm except for pH3 at which L type of Freundlich isotherm was suitable for MCLW. At pH3 and 7, linear isotherm was also able to describe the adsorption of MCLR and MCLW. The adsorption of MCLR and MCLW decreased significantly with the elevated pH, which is consistent with the pH-dependent hydrophobicity.     

论我国公务员行政道德行为的规制

公务员是国家公务的执行者,依法行使行政权力。在改革开放和建设有中国特色社会主义的伟大实践中,我国公务员队伍的主流是好的,有着良好的社会主义道德风尚。但是由于种种复杂的原因,导致一些公务员行政道德有一定程度滑坡,行政道德行为失范现象屡见不鲜,甚至出现腐败现象。因此,加强对我国公务员行政道德行为的规制,进一步完善我国公务员制度,意义重大。     

德清县森林资源优化发展研究

总结了1989—1994年德清县森林资源优化发展研究的过程和经验，表明应用森林生态经济理论，采取行政、经济、科技手段，分类指导环境资源林和商品林的经营管理，实现森林资源数量、质量、结构的最优配置是完全可能的。为集体林区走生态林业良性循环道路，实现由传统林业向现代林业转变提供了先进典型。     

运用PPR方法探讨星天牛与公园植物群落之间的关系

本研究运用投影寻踪回归（ＰＰＲ）方法对上海市７个样地的实际调查数据进行分析。结果表明：星天牛对寄主的危害率与寄主及周围植物的密度有密切关系。通过模拟试验，可寻求星天牛发生发展与植物群落之间的数量关系。从而为园林部门对星天牛进行综合治理，制定符合经济及生态规律的管理方案以及园林设计，提供了科学依据。