黄河三角洲低质低效人工刺槐林分类与评价
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国家“十一五”林业科技支撑计划项目“盐碱地改良沿海防护林体系研究与示范”(2009BADB2B05);国家“十一五”科技支撑计划项目“重要海湾海岸带典型受损生境修复关键技术研究与示范”(2010BAC68B01)


Classification and Evaluation of Low-quality and Low-benefit Robinia Pseudoacacia Plantation in Yellow River Delta Area
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    摘要:

    采用野外典型抽样调查分析和室内分析测定相结合的方法,依据树高、胸径、材积、郁闭度、土壤容重、孔隙度、有机质、初始入渗率、稳定入渗率、pH值及含盐量共14个树木形态及土壤理化指标,对黄河三角洲退化人工刺槐林进行分类与评价。结果表明:(1)黄河三角洲人工刺槐林树龄结构较为单一,仅依据以林分生长过程和林分结构为主的低质低效林分类标准不适合该区域退化人工刺槐林,需将树木生长状况及土壤理化性质结合起来进行分类与评价。(2)主成分分析表明,表征低质低效人工刺槐林的因子根据其影响大小排序依次为:土壤容重、孔隙度、林分郁闭度、树木材积、有机质和含盐量。(3)聚类分析表明,林分类型可划分为生长潜力型、轻度低效型、中度低质低效型、极度低质低效型和重度低质低效型5种类型,并依据参数值对其类型特征、产生原因及宜采取的经营措施进行了评价。

    Abstract:

    By the representative field sampling investigation and laboratory analysis,the classification and evaluation of depredated Robinia pseudoacacia plantation in the Yellow River Delta region were studied based on the 14 indexes of tree morphology(tree height,diameter at breast height,timber volume,canopy density) and soil physicochemical property(soil bulk density,soil porosity,organic matter,initial infiltration rate,stable infiltration rate,pH value,and salt content).Results indicated that the tree age of R.pseudoacacia plantation in the region was relatively single.The low quality and low-benefit classificatory criteria only by forest growth procedure and structure were unsuitable for the depredated R.pseudoacacia plantation in the region.The classification and evaluation of R.pseudoacacia plantation should combine the forest growth indexes with soil physicochemical properties.Principal component analysis showed that the main factors affecting the low-quality and low-benefit R.pseudoacacia plantation were in the order of soil bulk density soil porosity forest canopy density timber volume soil organic matter salt content.Cluster analysis indicated that the R.pseudoacacia plantation could be classified as the five types of potential type,slightly low-benefit type,medially low-quality and low-benefit type,extremely low-quality and low-benefit type,and badly low-quality and low-benefit type.According to the mean cluster value,the main features of the different types of forest,causes for the low-quality and low-benefit forest,and management measures were all evaluated.

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夏江宝,许景伟,李传荣,刘京涛,王月海,陆兆华.黄河三角洲低质低效人工刺槐林分类与评价[J].水土保持通报,2012,(1):217-221

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  • 收稿日期:2011-04-14
  • 最后修改日期:2011-06-13
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  • 在线发布日期: 2014-11-25
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