关键词: 敏感性分析, 敏感性分析

Abstract:

100 soil samples (GPS used for recording sample location) were collected in Chaihe basin in 2010. Porosity, total soil organic matter, total nitrogen and total phosphorus contents were measured. The spatial pattern of the data was analyzed using both traditional descriptive statistics and geo-statistics. The results indicated that soil organic matter contents was at moderate level of soil fertility, nitrogen and phosphorus were rich, according to the soil fertility classification standards of the second national soil. The semivariograms of geostatistics analysis indicated porosity, total soil organic matter, total nitrogen and total phosphorus were spatial autocorrelations. Spatial autocorrelation and random both contribute to the spatial structure of porosity, total soil organic matter, and total phosphorus. The study showed the spatial pattern soil total soil organic matter, total nitrogen and total phosphorus in Chaihe basin due to complex natural and social variables and provides a scientific basis for the evaluation and sustainable management of soil fertility and nutrient.