Method for researching storage and filtering effect of small water-gathering area composite ecological system on heavy metal

Abstract

The invention relates to the field of environmental protection of an ecological system, in particular to a method for researching the storage and filtering effect of a small water-gathering area composite ecological system on heavy metal. The method comprises the following steps: (1) arranging a sample area; (2) collecting samples; (3) analyzing the samples; and (4) analyzing data. The method has the beneficial effects that transformation and immobilization are realized through ecological system energy conversion, absorption, biodegradation and the like, so that purification is realized, the local ecological stability is maintained, the local economical development is promoted, and heavy metal ecological process research is conducted continuously. Through collection and sampling of atmospheric dry and wet deposition of a water-gathering area, and collection of different land utilization types and different layers of the water-gathering area, the heavy metal content dynamic change of atmospheric dry and wet deposition of the water-gathering area as well as annual input and output quantity of the heavy metal are analyzed, the intercepted filtration effects of different land utilization types of the water-gathering area on the heavy metal are compared, and the storage and filtering effect of the water-gathering area composite ecological system on the heavy metal is disclosed.

Description

technical field [0001] The invention relates to the field of ecological system environmental protection, in particular to a method for storing and filtering heavy metals by a composite ecosystem in a small catchment area. Background technique [0002] The aggravation of pollution caused by heavy metal pollutants has become one of the important environmental problems faced by human beings. The content, distribution, existing form, migration and transformation, biological effects and control measures of heavy metal pollutants in the environment have increasingly attracted people's attention. Based on an ecosystem, the study of the ecological process of heavy metals is one of the research hotspots in recent years. A thorough understanding of the qualitative and quantitative changes in the biogeochemical processes of the input, internal migration, transformation and output of various heavy metals in a system is very necessary for the carrying capacity and sustainable and health...

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Problems solved by technology

[0008] Research on heavy metals in my country started relatively late, and the distribution of heavy metals in agro-forestry ecosystems has been less investigated. The research objects and scope are limited. Most of the research areas are around big cities. Crops, reservoirs, etc., the investigation and research on special types and areas are not enough, such as the forest-agricultural compound catchment area (Wutongqiao area);

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