辽宁基岩质海岸防护林对枯落物及土壤养分的影响
发布时间：2018-04-10 03:25
本文选题：海岸防护林 切入点：基岩质 出处：《沈阳农业大学学报》2017年03期
【摘要】：为研究辽宁基岩质海岸防护林对枯落物及土壤养分的影响,以辽宁省大连市的4种典型海岸防护林(侧柏纯林、刺槐纯林、辽东栎纯林、辽东栎赤松混交林)为研究对象,通过对林下半分解层、未分解层枯落物及土壤的取样测定枯落物的蓄积量、持水能力及土壤养分,揭示不同林分类型对枯落物及土壤养分的影响。结果表明:枯落物的蓄积量及持水能力排序为:辽东栎纯林辽东栎赤松混交林侧柏纯林刺槐纯林,其中辽东栎纯林的蓄积量、最大持水量、有效拦截量分别为23.94t·hm-2,58.61t·hm-2,44.99t·hm-2,辽东栎赤松混交林的分别为25.53t·hm-2,47.24t·hm-2,32.66t·hm-2,侧柏纯林的分别为21.53t·hm-2,36.46t·hm-2,27.12t·hm-2,刺槐纯林的分别为7.81t·hm-2,13.60t·hm-2,10.25t·hm-2;与对照空地相比,4种林分改良土壤养分的能力依次为:侧柏纯林辽东栎赤松混交林刺槐纯林辽东栎纯林,其中侧柏纯林土壤的全氮、有效磷、有机质含量分别为4.23g·kg~(-1),4.22mg·kg~(-1),56.76g·kg~(-1),辽东栎赤松混交林的分别为2.04g·kg~(-1),3.90mg·kg~(-1),39.67g·kg~(-1),刺槐纯林的分别为2.52g·kg~(-1),4.20mg·kg~(-1),43.42g·kg~(-1),辽东栎纯林的分别为2.04g·kg~(-1),3.90mg·kg~(-1),39.17g·kg~(-1)。整体而言,辽宁基岩质海岸不同防护林类型中,辽东栎赤松混交林和侧柏纯林的林下枯落物蓄积量、持水能力及土壤养分情况最好。
[Abstract]:In order to study the effects of bedrock coastal shelterbelts on litter and soil nutrients, four typical coastal shelterbelts (Platycladus orientalis, Robinia pseudoacacia, Quercus liaotungensis, mixed Pinus liaotungensis) in Dalian, Liaoning Province, were studied.The effects of different stand types on litter and soil nutrients were revealed by sampling litter and soil in the lower half decomposition layer, undecomposed layer and soil to determine the amount of litter accumulation, water holding capacity and soil nutrient.The results showed that the order of litter storage and water holding capacity was as follows: pure forest of Pinus liaotungensis, pure forest of Platycladus orientalis, pure forest of Pinus liaotungensis, and maximum water holding capacity of pure forest of Quercus liaotungensis.鏈夋晥鎷︽埅閲忓垎鍒负23.94t路hm-2,58.61t路hm-2,44.99t路hm-2,杈戒笢鏍庤丹鏉炬贩浜ゆ灄鐨勫垎鍒负25.53t路hm-2,47.24t路hm-2,32.66t路hm-2,渚ф煆绾灄鐨勫垎鍒负21.53t路hm-2,36.46t路hm-2,27.12t路hm-2,鍒烘绾灄鐨勫垎鍒负7.81t路hm-2,13.60t路hm-2,10.25t路hm-2;涓庡鐓х┖鍦扮浉姣，
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