文献类型：期刊文献

中文题名：松材线虫入侵对湖北三峡地区马尾松林水源涵养能力的影响

英文题名：Impacts of Pinewood Nematode Invasion on the Water Conservation Capacity of Pinus massoniana Forests in the Three Gorges Area of Hubei Province

作者：宋学雨[1] 简尊吉[1] 王少博[1] 党英侨[1] 魏可[1] 王小艺[1] 肖文发[1]

第一作者：宋学雨

机构：[1]中国林业科学研究院森林生态环境与自然保护研究所,国家林业和草原局森林保护学重点实验室,北京100091

年份：2024

卷号：37

期号：1

起止页码：10-20

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2023】；CSCD:【CSCD2023_2024】；

基金：中国林业科学研究院基本科研业务费专项资金项目(CAFYBB2021ZG001)。

语种：中文

中文关键词：松材线虫;枯落物;土壤;水源涵养;马尾松

外文关键词：pine wood nematode;litter;soil;water conservation;Pinus massoniana

分类号：S763

摘要：[目的]为了探讨松材线虫入侵后松林枯落物层和土壤层水源涵养能力的变化趋势。[方法]以湖北三峡地区松材线虫入侵不同年限(0 a(未入侵)、6 a、10 a和16 a)的马尾松林为对象,采用环刀法、烘干法与室内浸泡法对林分地表枯落物和土壤层水源涵养能力进行了测定,并结合枯落物有效拦蓄量和土壤有效蓄水量定量比较林分枯落物层和土壤层的水源涵养能力在松材线虫入侵不同年限间的变化趋势。[结果]表明:(1)松材线虫入侵不同年限间马尾松林枯落物蓄积量、有效拦蓄量和最大持水量均无显著差异(P>0.05),枯落物总厚度为3.47~5.34 cm,总蓄积量为6.11~9.62 t·hm^(?2),枯落物有效拦蓄量为9.71~14.77 t·hm^(?2)。(2)松材线虫入侵不同年限间马尾松林土壤含水量、土壤密度、非毛管孔隙度存在显著差异(P<0.05),毛管持水量为333.42~378.33 t·hm^(?2),饱和蓄水量为386.27~461.20 t·hm^(?2),入侵6 a的马尾松林0~10 cm和10~20 cm土层土壤有效蓄水量(62.08 t·hm^(?2)和50.08 t·hm^(?2))、10~20 cm土层土壤饱和蓄水量(386.27 t·hm^(?2))均最小。(3)综合林分枯落物和土壤层蓄水能力,由大到小依次为入侵10 a(219.72 t·hm^(?2))>未入侵(191.85 t·hm^(?2))>入侵16 a(182.64 t·hm^(?2))>入侵6 a(121.86 t·hm^(?2)),入侵6 a林分综合蓄水量显著低于其他林分。[结论]湖北三峡地区马尾松林受松材线虫入侵的持续危害后,短期内枯落物层和土壤层持水能力下降,随年限增加林分水源涵养能力逐渐恢复。因此,今后应加强松材线虫入侵的防控力度,以维持和尽快恢复三峡地区马尾松林水源涵养功能。
[Objective]To reveal the changing trend of water conservation capacity of litter and soil layers after pinewood nematode invasion.[Methods]Based on four sites of uniform Pinus massoniana forests with various infection periods over time(0(non-invasion),6,10 and 16 years)of pinewood nematode invasion in the Three Gorges Area of Hubei Province,water conservation capacities of litter and soil layer in different forest stands were studied by cutting ring method,drying method and indoor immersion method.The water conservation capacities were also quantitatively compared by combining the effective retention capacity of litters and the effective water-holding capacity of soil in different invasion years.[Result]The results showed that:(1)There were no significant differences(P>0.05)in the litter accumulation,effective retention and maximum water holding capacity of litter of P.massoniana forest in different invasion years by pinewood nematode,and the total thickness was 3.47~5.34 cm.The total accumulation was 6.11~9.62 t·hm^(?2),and the effective water retention capacity was 9.71~14.77 t·hm^(?2).(2)There were significant differences in soil water content,bulk density and non-capillary porosity of P.massoniana forest in different invasion years by pinewood nematode(P<0.05).The capillary water capacity was 333.42~378.33 t·hm^(?2),and the maximum water-holding capacity was 386.27~461.20 t·hm^(?2).The effective water-holding capacity(62.08 t·hm^(?2)and 50.08 t·hm^(?2))in 0~10 cm and 10~20 cm and maximum water-holding capacity(386.27 t·hm^(?2))in 10~20 cm soil layers of P.massoniana forest in 6 years of invasion were the smallest.(3)The comprehensive water holding capacity of litter and soil layer in 10 years of invasion(219.72 t·hm^(?2))was the largest,followed by non-invasion(191.85 t·hm^(?2)),16 years(182.64 t·hm^(?2)),6 years(121.86 t·hm^(?2)).[Conclusion]In the short term,the water holding capacity of litter and soil layer of P.massoniana forest decrease,which affects the water conservation capacity of forest stand after the continuous harm of pinewood nematode invasion in the Three Gorges Area of Hubei,but gradually recover with increasing years.Therefore,the prevention and control of pinewood nematode invasion should be strengthened in the future,to maintain and restore the water conservation function of P.massoniana forest in The Three Gorges Area.