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| 馬尾松天然林和人工林是紅壤低丘地區(qū)植被恢復的先鋒樹種之一,由于人為或自然的因素,有很大一部分林分結(jié)構(gòu)差、生產(chǎn)力低,森林生態(tài)系統(tǒng)內(nèi)組成成分下降,林下植被稀少,林地土壤受到嚴重侵蝕,整個林分表現(xiàn)為涵養(yǎng)水源、固持土壤等生態(tài)效能低劣。由此可見,南方馬尾松林的水土保持作用有限。 |
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| Pinus massoniana is one of the major pioneer species for vegetation reforestation due to the strong adaptability, preferable toleratcance to drought and infertility in southern China. However, most of those forests show poor structures and low productivity owing to the human or natural factors,so that the composition of forest ecosystems is reduced, covered with exiguous vegetation and subjected to severe soil erosion, resulting in poor eco-efficiency of such forests in the conservation of water and soils. Accordingly, Pinus massoniana forests play a limited role in water conservation. |
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