通过对大兴安岭“6·5”森林火灾后沼泽土壤变化的研究表明,火灾对土壤的土体构型、物理性质、化学性质及微生物特征均产生了不同程度的影响,并且有利于沼泽土壤的发生发育.
In this paper, we have researched the changes of swamp soil after the great fire event occurred on 6 May, 1987 in the Da Hinggan Mountain. It is revealed that the fire had severely effected the soil profile by burning away the organic matter in topsoil. Soil thermal situation has been changed, and soil temperature rise. Soil water content has been altered because the water reservation condition has been changed by the fire. Soil pH and the content of P2O5, K2O, CaO, MgO increase after the fire, on the contrary, the organic matter content and N content decrease, the quantity of microorganism greatly increased after the fire. It is considered that the fire is beneficial to the development and genesis of swamp soil in this area.
[1] 高伟.火在生态系统中的作用.生态学杂志.1992, 11(1):41-97.
[2] Hciaclman M L. Fire intensity and frequency as factors in the diatribution and structure of northen ecosystems. Fire regimes and ecosystem properties. U. S Dept. of Agriculture Forest Service,1978,7-58
[3] Barbour M G, ct al. Terrcatrial plant ecology. The Benjamin Publishing C;ompany Inc. 1987,139-205.
[4] 赵魁义.大兴安岭火灾对森林沼泽植被的干扰.南京大学学报〔自然科学版)(自然灾害研究专辑),1991:417-424.
[5] 阎敏华.森林火灾对大兴安岭林区小气候的影响.地理科学,1993, 13(4):389-390.
[6] 周幼吾,梁林恒,顾钟伟,等.大兴安岭森林火灾对冻土水热状况的影响.冰川冻土,1993, 15(1):17-26.
[7] 张养贞.大小兴安岭山地和呼伦贝尔高原的沼泽土壤资源及其利用.见:中国沼泽研究.北京,科学出版社,1988.207-215.
[8] Hiroko Fujita, Osxmu Miura. Annul and Seasonal changes of soil chemical properties in the four year period after a fire in Rifu, Jxpxn. Ecological Review. 1988, 21(3):233-245.
[9] Dcbatto L F, et al. Fire's effect on physical and chemical properties of chaparral soil,. Proc. Symp. Fnv. Cons. Fire and Fucl M xngmt.,Washington. D. C.,U. S. Dept. of Agriculture Forest Service. 1977,65-74.