Binxian-yanshou Area Multi Target Regional Geochemical Characteristics

Through the development of Bin County of Heilongjiang Province-the extension area ofmultipurpose regional geochemical survey, implementation of the "national survey of soilstatus and of pollution prevention" project, the identification element geochemicalcharacteristics of distribution and allocation of the measuring area, environmental assessmentand basic geological research of land and resources, national and local。Area administrative divisions under the Harbin city bin County, life extension, Sydney, ACheng4City (part), the survey area5021km~2。Investigation on2007Year start，Between2009and comprehensive character of the field survey work was completed. Soil geochemistrysurvey were collected respectively measuring both surface and deep soil samples, surface soilgeochemical sampling for measuring density of1sample/km~2, Sampling depth of0-20cmcultivated soil, topsoil samples1sample weight combinations such as/4km~2; deep soilgeochemistry survey sampling density of1sample of/4km~2, Sampling depth is1.5-2m, deepsoil combined in1/16km~2sample weight. Measuring a total of5,134collecting surface soilsamples, Capture deep910soil samples, the combination of surface and deep soil samplestotal of1657. Soil samples were all combinations of54geochemical index analysis andtesting work.1、 through the soil geochemical survey in bin County of Heilongjiang province-lifeextension area, survey area are identified geological background and distributioncharacteristics of soil elements and their relationships. Calculation of surface geochemicalbackground values of soil elements and deep soil geochemical baseline values, Research thearea element enrichment and degree of dilution. Study on different soil types, and elementgeochemical characteristics of different soil parent material.2、 according to the State of the soil environmental quality standard (GB15618-1995) on the measurement of soil environmental quality of grading, bin County of Heilongjiangprovince-life extension area Pb, Hg, Cu, Cr, Zn, Ni, Cr reached levels over97%of the area.Bin County of Heilongjiang province-extension Division of harmful elements superimposed,using maximum principle, concluded that the effects of Cd element bin County ofHeilongjiang province-56.7%are level land, life extension, the vast majority of agriculturalland belonging to level land; second-level land,29.67%, Level III or worse three consists ofthe study area a total land area of13.63%, II, and II following major land use for forestry land.Visible, bin County-extension of agricultural land base is clean no pollution of the land, whichqualitatively safeguards the security of national food.3、 and to no pollution-food field crops origin environment conditions under NY5332-2006standard in the soil environment requirements for pursuant to (table), under thistimes soil investigation results, on investigation area field crops no pollution-planting areasoil conditions for Division, investigation area in the suitable planting no pollution-field cropsof area for4476.4Km~2, accounted for investigation area total area of86.7%, has about688Km~2of land not meet no pollution-food field crops origin environment conditions.4、In the survey area of ecological geochemistry environment undertook division intodistricts, the district is divided into three ecological geochemistry environment area and theecological geochemistry environment of zone environment characteristics were reviewed inthis paper.