机构地区:[1]北京林业大学自然保护区学院,北京100083
出 处:《江西林业科技》2006年第3期47-50,共4页Jiangxi Forestry Science and Technology
基 金:国家林业局试验推广项目(661160)
摘 要:根据在南方3个省区所收集的保护小区面上调查资料,采用SPSS11.5统计软件,分析目前保护小区面积的数量特征,以及不同类型、不同级别的保护小区面积特征。并采用单因素方差分析比较不同类型保护小区平均面积之间的差异性。结果表明,从数量上看,79.2%的保护小区面积≤100hm2,其中尤以1.1 ̄5hm2和5.1 ̄10hm2二者最多,分别占到总体的20%和18.3%。由于南方地区保护小区的生态系统基本属于森林类型,则面积小于1hm2的保护小区不利于保护,应适当予以扩大。对于不同类型的保护小区,从数量看,以植物为保护对象的占到49.3%,而从总面积来看,则典型森林生态系统类型最多,占39.1%,其次是野生动物类型,为21.4%。方差分析结果表明,植物类型的保护小区与典型森林生态系统、野生动物和自然景观类型的保护小区面积差异极为显著(α<0.01),与一般生态公益林类型的差异显著(α<0.05),与湿地生态系统类型的差异较显著(α<0.1),而与古树名木类没有显著差异。其余的类型之间,只有古树名木类与自然景观类有极显著差异(α<0.01)。对于不同级别的保护小区分析结果表明,不管从数量还是总面积来看,村级保护小区都占较大优势,组级在数量上也很可观,但总面积比例较小,而乡镇级数量虽少,但总面积却占到相当比例。由于受传统文化的影响,虽然许多组级的保护小区单位面积比较小,但其植被反而具备较高的原生性、观赏性。On the base of information of some small-reserves in three provinces of Southeastern China, the area numerical characteristics of these small- reserves are analyzed by using the software of Statistical Package for the Social Science (SPSS).And the differences among the mean areas of different types of small-reserves are compared by One-Way ANOVA.The results show that the areas of 79.2% of the small-reserves are lower than 100 hm^2 . Most of their areas are between 1.1 and 5 hm^-2, and between 5.1 and 10 hm^-2,and their proportion are 20% and 18.3%,respectlvely.Because the ecosystem of those small-reserves in Southeastern China are basically forest ecosystem, those small-reserves with area lower than 1hm^-2 are not favourable for blodlverslty conservation and should be expanded properly.For the small-reserves with different types, those taking plants as conservation object has the most proportion of number, 49.3%. But those small-reserves taking the typical forest ecosystem as conservation object has the largest total area, 39.1,% and the next is those taking wild animal as conservation object, 21.4%. The results of ANOVA show that the mean areas of small-reserves are the most significant difference (α〈0.01),between the plant type and typical forest ecosystem type ,wild animal type and natural landscape type,respectively.And between the plant type and common ecological publlc-welfare forest type, the difference is also significant(α〈0.05);between the plant type and wetland ecosystem type, the difference is not so much (α〈0.1).There is no significant difference between the plant type and age-old or celebrated trees type . Among the other types, there is no significant difference but between the age-old or celebrated trees type and natural landscape type (et〈0.01).The analysis results of different levels small-reserves show that not only the numhcr hut also the total area of the village level was dominant.The nutuber of group level is also rich, but the total area not.On the contrary,
分 类 号:S759.9[农业科学—森林经理学]
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