RELEVANCE OF HUMUS COMPOSITION TO THE PHYSICAL MECHANICAL STABILITY OF AGRICULTURAL SOILS - A STUDY BY DIRECT PYROLYSIS MASS-SPECTROMETRY

被引：22

作者：

HEMPFLING, R

SCHULTEN, HR

HORN, R

机构：

[1] FACHHSCH FRESENIUS WIESBADEN,DEPT TRACE ANALYSIS,DAMBACHTAL 20,W-6200 WIESBADEN,GERMANY

[2] INST PLANT NUTR & SOIL SCI,W-2300 KIEL,GERMANY

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 1990年 / 17卷 / 03期

关键词：

Agricultural soils; compaction; humus; mass spectrometry; mechanical soil strength; pyrolysis;

D O I：

10.1016/0165-2370(90)85016-G

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The thermal evolution and molecular composition of humus in agricultural soils (Aphorizons) which are characterized by similar carbon contents, pH values, texture, pore size distribution and kind of aggregate but different physical/mechanical stability were investigated by temperature-resolved pyrolysis-field ionization mass spectrometry (Py-FIMS). This study was conducted to evaluate the relevance of humus composition to soil stability on the basis of molecular structures. Carbohydrates, condensed lignin subunits, bound n-fatty acids and aliphatic polymers were found to be of major importance in the physical/mechanical stability of agricultural soils. © 1990.

引用

页码：275 / 281

页数：7

共 14 条

[1] INFLUENCE OF A FUNGAL POLYSACCHARIDE, SCLEROGLUCAN, ON CLAY MICROSTRUCTURES [J].