重金属对森林生态系统效应的研究进展

对重金属在森林生态系统中迁移、转化规律、环境容量、形态及其影响因素,以及森林生态系统对受重金属污染区域的生物修复作用和固定重金属的生态效益等方面的研究进展进行了综述。同时对今后的研究提出建议。

Advance in the Research on Domino Effect of Heavy Metal Ions in Forest Ecosystem

Forest ecosystem is one of the most important ecosystems on earth. It will bring material impact to environment and human health when it is contaminated by organic compound or inorganic compound. In all of inorganic compound, the heavy metals are always attended in ecology and environment scienc e due to their characteristics in this paper.The authors summarized the research evolutions of heavy metals pollution in forest ecosystem from its transforming rules, environment capacity, modalities, affected factors, the effect of bioreme diation on heavy metals pollution area and the ecological benefit of forest on f ixing heavy metals. Soil erosion and eluviation are main migration ways to heavy metals.Forest soil has some characteristics such as preferential flow, preferen tial breakthrough, preferential migration, preferential lateral infiltration non -symmetric tailing breakthrough curve,so the solutes can penetrate soil instant aneous. Heavy metals have several forms in the system and the impact factors are soil temperature, pH, Eh, humic substances, mineral, climate, water cycle, bein gs and so on. Bioremediation is unique friendly way in refine. The author also p ut forward suggestions for the research in the future.