沈阳农业大学学报2018，Vol.49Issue(3)：355-362,8.DOI:10.3969/j.issn.1000-1700.2018.03.015
北方土石山区不同土地利用方式下土壤质量综合评价
Comprehensive Evaluation of Soil Quality with Different Land Use Types in Rocky Mountain Areas of Northern China
摘要
Abstract
In order to determine the effects of different land types on soil quality, taking the soil of rocky mountain areas of Northern China as examples, we mainly analyzed the differences in soil water storage capacity and soil nutrient characteristics of different land use types (artificial woodland, closing hillsides to facilitate afforestation, slope change ladder, valley square, fallow land) by using soil physical and chemical properties analysis indoor. The comprehensive evaluation of soil quality was carried out by analytic hierarchy process. The soil bulk density of all samples was 1.24 -1.37 g?cm -3, the maximum for fallow land and the minimum for the artificial woodland. The soil bulk density increased with the depth of soil layer. The soil capillary porosity of all samples was artificial woodland > slope change ladder > valley square > closing hillsides to facilitate afforestation > fallow land, and soil effective water content was artificial woodland > slope change ladder > closing hillsides to facilitate afforestation > valley square > fallow land. The soil total reservoir storage and maximum available storage were 1459.29 t?hm -2 and 1339.5 t?hm -2, respectively, with artificial woodland the best. The soil dead storage of all samples was closing hillsides to facilitate afforestation (134.03 t?hm-2 ) > valley square (126.14 t?hm-2 ) > artificial woodland (119.79 t?hm-2)> slope change ladder (102.52 t?hm-2 ) > fallow land (100.44 t?hm-2 ) and the lowest soil water use efficiency was fallow land. The usable storage and flood control storage were 1127.06-1241.78 t?hm-2 and 58.28-167.21 t?hm-2, respectively. Compared with the fallow land (9.39 g?kg-1 ), the soil organic matter in closing hillsides to facilitate afforestation, artificial woodland, slope change ladder, valley square increased by 59.42％, 49.09％, 36.74％, and 24.07％, respectively. The total N, available P and available K with different land use types were different and the orders were closing hillsides to facilitate afforestation > artificial woodland > slope change ladder > valley square >fallow land. Soil and water conservation measures could effectively improve the soil nutrient content. Compared with the fallow land (0.421), the soil quality composite index of artificial woodland, closing hillsides to facilitate afforestation, slope change ladder, valley square increased by 31.83％, 31.59％, 17.58％, and 17.34％, respectively. Soil and water conservation measures can improve soil quality, and artificial woodland and closing hillsides to facilitate afforestation are the best.关键词
土壤质量/土地利用方式/综合评价/北方土石山区/土壤水库/层次分析法Key words
soil quality/land use types/comprehensive evaluation/rocky mountain areas of Northern China/soil reservoir/analytic hierarchy process分类
农业科技引用本文复制引用
张诗琦,王瑄..北方土石山区不同土地利用方式下土壤质量综合评价[J].沈阳农业大学学报,2018,49(3):355-362,8.基金项目
国家公益性行业(农业)科研专项项目(201303125) （农业）
