摘要
目前东北林区森林采运70%是采用拖拉机半拖集材,主要有J—50(履带式)和J—80(轮式)两种机型,集材道上土壤不仅受拖拉机反复走行的作用,而且还有拖曳木材捆的影响,产生地表轧乱和土壤压实现象,造成水土流失和腐殖质丧失。本文通过实地调查测定,应用计算,研究了集材道土壤硬度和孔隙度,并得出结论:对于集材道上的土壤硬度和孔隙度,履带式的都比轮式的大。
Tractors high-ball Logging is used now in Northeasten forest area. The tractors mainly consist of J—50 (crawler) and J—80 (wheeled). The soil of skidding trails was condensed by tractors and timber ties,leading to soil erosion. It affects badly the seedling growth. This paper studies also the soil compaction and soil porosity with compacter, The soil compaction and soil porosity of crawler tractor trail is greater than that of the wheeled tractor trail.
关键词
拖拉机集材
土壤硬度
土壤孔隙度
苗木生长
Tractor Logging
Logged Area
Logged Road
Soil Compaction
Soil Porosity
Soil Condense
