Method for building cold region riparian buffer strip stopping and controlling agricultural non-point source pollution

• Main Authors: SUN LI'NA, ZHANG HONGLING, MA GUOFENG
• Format: Patent
• Language: English
• Published: 05.08.2015
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for building a cold region riparian buffer strip stopping and controlling agricultural non-point source pollution, and relates to an ecological and environmental protection method. According to the method, three different natural vegetation barrier strips are built from a farmland to a river channel, leguminous plant locust and natural grass land vegetation are combined in a gentle slope area, infiltration of farmland runoff can be effectively stopped and controlled, nutrient elements such as nitrogen and phosphorus can be fixedly adsorbed by the aid of plant rhizosphere, the farmland runoff enters an ecological barrier area provided with an arbor-shrub-grass vegetation belt and a biological carbon adsorption belt, rainfall runoff can be remarkably intercepted, absorbed and transformed, and the biological carbon adsorption belt effectively adsorbs pollutants in snowmelt runoff during spring thawing of winter snow and can be absorbed, transformed or degraded by plants and rhizospheric microorganisms after winter dormant period. Agricultural non-point source pollution can be further stopped and controlled, and flood prevention and discharge functions of the riparian buffer strip cannot be affected.