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Soil Vital Signs

其他書名	A New Soil Quality Index (SQI) for Assessing Forest Soil Health
出版	U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2007
URL	http://books.google.com.hk/books?id=dy4-MQAACAAJ&hl=&source=gbs_api

註釋"The Forest Inventory and Analysis (FIA) program measures a number of chemical and physical properties of soils to address specific questions about forest soil quality or health. We developed a new index of forest soil health, the soil quality index (SQI), that integrates 19 measured physical and chemical properties of forest soils into a single number that serves as the soil's "vital sign" of overall soil quality. Regional and soil depth differences in SQI values due to differences in soil properties were observed. The SQI is a new tool for establishing baselines and detecting forest health trends."