A Freezing Technique for Sampling Skeletal, Structureless Forest Soils
1986
Froehlich, H. A. | Miles, D. W. R.
A technique was developed to take large undisturbed samples in forest soils with high coarse-fragment content. Each sampling site was wetted with water, a metal pin was driven into and carefully removed from the soil, and liquid N₂ was poured into the resulting hole. A frozen sample up to 200 mm in diam and 450 mm deep could be excavated and transported frozen to the laboratory. This sampling technique allowed measurement of bulk density, particle size distribution, and organic matter characteristics. The large size of the samples permitted sampling of soils with coarse fragments up to 85 mm in diam.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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