煤炭开采对油松人工林分群落健康的影响

Effects of Coal Mining on Community Health of Pinus tabulaeformis Plantations

森林健康评估是当前国内外十分关注的热点问题,不同类型的森林生态系统健康评价的方法不同。通过设置不同开采强度,从森林健康角度对煤炭开采区和非开采区的油松林分的生长势、侧枝进行调查,结果表明:煤炭开采降低了森林健康指数,油松林景观变差,生长势减弱,顶端优势衰退,枝叶稀疏,病虫害增多。煤炭开采区林分健康指数处于1.96~3.11之间,表征为不良和濒死状态。煤炭开采强度较大时对油松侧枝生长产生显著抑制作用。

Forest health evaluation is a hot issue that is of great concern at home and abroad.Different methods of forest ecosystem health evaluation are different.In this paper,the growth potentials and lateral branches of Pinus tabulaeformis forest in the mining area and the non-exploitation area were investigated by different mining intensities.Result shows that the coal mining index reduce the forest health index and forest landscape of Pinus tabulaeformis become worse,growth potential weakened,the top advantage decline,sparse leaves,pests and diseases increase.The mining area health index of coal mining area is in the range of 1.96-3.11,which is characterized by bad and dying state.When the intensity of coal mining is large,the growth of lateral branches of Pinus tabulaeformis has a significant inhibitory effect.