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四川横断山地北段采伐迹地主要在甘孜藏族自治州境内的道孚、沪霍、新龙、翁达等地区。该区位于雅砻江上游,在各支沟孕育着丰富的亚高山原始针叶林,是四川主要木材生产基地。本区地处青藏高原东南缘,由于独特的山地隆起和走向,构成多样的土壤类型,广阔森林的繁茂景观和与多样的生态环境的结合,导至森林土壤类型的复杂性,引起专家学者的注目,发表一系列考察报告和文献资料。〔1〕〔2〕〔3〕〔4〕〔5〕〔6〕但是随着失去以原始针叶林为主体的采伐迹地日益增多的情况下,对该区采伐迹地上土壤条件变化缺乏研究,笔者在该区挖掘55个土壤剖面资料和对11个土壤剖面理化分析数据加以整理分析。试图把经验的估计(定性描述阶段),能应用多元分析赋于新的定量方法,更精确地表达次生迹地土壤类型特征,从而为高山更新提供参考。
Harvesting sites in the northern section of the Hengduan Mountains in Sichuan are mainly located in the areas of Daofu, Huhuo, Xinlong and Wengda in the territory of Ganzi Tibetan Autonomous Prefecture. The area is located in the upper reaches of the Yalong River, in each ditch breeds rich sub-alpine coniferous forests, is the main timber production base in Sichuan. The area is located in the southeastern margin of the Qinghai-Tibet Plateau, due to the unique mountain uplift and direction, constitute a variety of soil types, the vast landscape of lush forests and with a variety of ecological environment, leading to the complexity of forest soil types, caused by experts and scholars Attention, published a series of inspection reports and literature. 〔1〕 〔2〕 〔3〕 〔4〕 〔5〕 〔〕 〔6〕 However, with the loss of the original coniferous forest as the main cut-off sites in the case of growing, the lack of research on the soil conditions in the area of deforestation, I dig in the area 55 soil profile information and 11 soil profile physical and chemical analysis data to be analyzed. Trying to estimate the experience (qualitative description stage), applying multivariate analysis to the new quantitative method, and more accurately expressing the characteristics of soil types in secondary trace so as to provide a reference for alpine regeneration.