广东自然保护区生态旅游SWOT分析及对策研究

在对广东省自然保护区生态旅游资源实地调查的基础上，运用SWOT分析法全面探讨了广东省自然保护区生态旅游的优势、劣势、机遇和挑战，提出了相应的旅游发展策略。     

古典园林的音乐审美探析

中国古典园林是集建筑、园艺、书画、文学、音乐与一体的综合艺术形式,通过对音乐审美的本质,园林审美与音乐审美的关系,音乐在古典园林中的作用,古典园林中音乐审美的实践等分析,阐明了音乐在园林中不可或缺的重要地位.     

薤山自然保护区鸟类资源调查

通过野外观察、收集历史资料、座谈访问等方法,初步确定薤山自然保护区鸟类125种,隶属于11目,33科;薤山鸟类地理型:留鸟64种,夏候鸟32种,冬候鸟17种,旅鸟种12;薤山鸟类季节型:古北种45种,东洋种55种,广布种25种;观赏鸟类34种,食虫鸟类65种,食鼠鸟类23种;国际贸易公约的鸟类31种,被列入该公约附录Ⅰ的有1种,被列入该公约附录Ⅱ的有28种,被列入该公约附录Ⅲ的有2种;国家Ⅰ级野生保护鸟类2种,国家Ⅱ级野生保护鸟类34。     

论湿地自然保护区跨部门管理的法律问题

湿地自然保护区是由水、土、生物和人构成的生态系统，其自然资源和自然环境管理必然涉及多个管理部门。因此，应当按照生态系统管理思想，建立协调管理机制，成立合作管理机构，对湿地自然保护区自然资源和自然环境进行综合管理。《自然保护区法》等法律、法规中应当安排适当的原则和规则，综合考虑自然保护区跨部门管理问题。     

福建省湿地类型自然保护区发展问题探讨

阐述了福建省湿地类型自然保护区现状 ,分析了湿地类型自然保护区发展存在的问题及其成因 ,据此提出了福建省湿地类型自然保护区的发展对策     

山西省蟒河自然保护区雀鹰的繁殖

1996年－1998年的3月－9月，在蟒河自然保护区对雀鹰的繁殖习性进行了观察。结果表明该鸟在本区繁殖前后的种群密度分别为0．08只/km^2和0．10只／km^2，营巢期为10d-13d，窝孵数3枚－4枚，孵卵期23d-25d，孵化率88．89％，育雏期21d-24d。其食物组成：鸟类占43．33％，鼠类占17．77％，蛙类占14．44％，昆虫占15．56％，其他占8．89％。     

菜阳河自然保护区3种森林类型的土壤特性

对设于菜阳河自然保护区 3种森林类型的 8块监测样地的土壤剖面调查结果得出 :3种森林土壤有较明显的差异。季节雨林土壤为粗骨性赤红壤 ,水热条件好 ,有机质等养分含量丰富 ,阳离子交换量较高。山地雨林土壤为紫色赤红壤 ,总孔隙度达 5 0 % ,通透性尚好 ,土壤氮磷钾全量较其他两类土壤低 ,有机质含量及有效氮磷钾含量与季风常绿阔叶林接近 ,交换性能较好。季风常绿阔叶林土壤主要为黄色赤红壤 ,总孔隙度达 5 6 % ,非毛管孔隙度 11 5 1% ,土壤通透性及保肥能力较好。     

福建梅花山国家级自然保护区竹类资源的保护与开发利用

福建梅花山自然保护区的竹类资源丰富,共有12个群落14属51种,经济竹种多样,竹类资源的开发利用具有广阔的前景。     

西藏林芝地区景观生态格局分析

应用景观生态学原理和方法,利用遥感技术和地理信息系统,结合森林资源二类调查,在ARC/INFO支持下,对西藏林芝地区的景观格局与空间异质性作了定量描述。结果表明:林芝地区共划分为14个景观要素类型,形成以自然景观、半自然景观和管理景观为主的生态空间格局。其中:自然景观保持着较好的原始状态;半自然景观受干扰的程度最重、景观破碎强烈;其次为管理景观。这反映出林芝地区生态环境退化的趋势。     

Acacia cyanophylla for forage and fuelwood in North Africa

Forage and wood yield of Acacia cyanophylla, also known as Acacia saligna, was studied in a 300–400 mm precipitation zone in Tunisia. Yields were measured during and after drought. This short (2–8 m) evergreen leguminous tree is used as a forage drought reserve in frost free regions where mean annual precipitation exceeds 250 mm. The standing crop of leafy forage builds up year after year for at least four years or until the tree is cut. It rapidly regrows after cutting from coppice shoots. The leaves provide high protein forage for sheep and goats during the long dry summer season typical of the Mediterranean climate as well as emergency forage during drought. The tree is used to stabilize moving sand dunes, and as a windbreak to protect cropland. It also provides fuelwood and increasaes soil nitrogen by fixation. The need for supplemental irrigation during establishment is a major constraint. Research in the 350 mm precipitation zone of Tunisia found 3.2 year old trees to yield over 1400 kg of forage standing crop per hectare after a severe drought. Trees harvested at 2.5 years of age in May, during the worst drought in over 30 years, yielded a standing forage crop of 724 kg per hectare. Forage regrowth 8 months after cutting and 4 months after rains returned was 700 kg/ha. The forage standing crop for trees harvested only once during the 3.2 year period was double the amount of forage regrowth from trees harvested the previous year, but mean annual forage yield similar. This demonstrates that it is possible for forage to be conserved as a living forage reserve for later use during drought. Total wood yield was only 1621 kg/ha for trees cut twice compared to 3683 kg/ha for trees cut only once. Annual cutting will substantially reduce the amount of forage available during drought and reduce the production of fuelwood. It may also reduce the vigor, productivity and life of the tree. Acacia cyanophylla alley cropped on cereal farmland can protect the soil from erosion, protect the associated crop from wind damage, fix nitrogen, provide fuelwood and provide a reserve of high quality forage for use during drought. This work was supported by the Government of Tunisia and the U.S.A.I.D. Tunisia Range Development and Management Project (664-0312.8).