摘要
以中亚热带典型的5类森林生态系统为研究对象,对不同森林生态系统的水源涵养功能进行评估并分析其影响因素。基于国家林业和草原局云南玉溪森林生态系统国家定位观测研究站2017—2021年的生态监测数据,采用水量平衡法对中亚热带磨盘山5种典型森林生态系统水源涵养量进行计算,在分析水源涵养量时空分布规律的基础上评估森林生态系统水源涵养功能。研究表明:(1)2017—2021年间5类森林生态系统水源涵养量有增长趋势,2018年的降水量和水源涵养量相比于2017年、2019年有显著增长,2019—2021年常绿阔叶林、高山栎林和华山松林水源涵养功能均呈较好增长趋势,而滇油杉林和针阔混交林表现不佳。(2)水源涵养量的空间分布与林内降雨量、蒸腾量空间分布大致相同,而与地表径流量的空间分布不同。空间分布上常绿阔叶林水源涵养功能最强(97.2 mm),高山栎林(77.6 mm)、针阔混交林(71.7 mm)、华山松林(65.2 mm)次之,滇油杉林水源涵养能力相对最弱(60.2 mm)。(3)5类森林生态系统水源涵养量的影响因素不同且差异较大,林内降水量为主要显著影响因素(P<0.05),其次为凋落物蓄积量和林分郁闭度,并建立了耦合性较高的水源涵养量与显著影响因素的线性回归模型,以预测空间上未知点的水源涵养量。森林生态系统长期定位监测数据可以综合的评估不同森林生态系统的水源涵养功能及其发展趋势,有利于生态价值的衡量和保护力度的把握。
Five typical forest ecosystems in the middle subtropical region were selected as the research objects,and the water conservation functions of different forest ecosystems were evaluated and the influencing factors were analyzed,so as to provide theoretical basis for the construction of regional water conservation forests and the improvement of ecological service functions.On the basis of the temporal and spatial distribution of conservation amount,the water conservation function of forest ecosystem and its influencing factors were evaluated.The research shows that:(1)The water conservation of the five forest ecosystems showed an increasing trend from 2017 to 2021.Compared with 2017 and 2019,the precipitation and water conservation of 2018 showed a significant increase.From 2019 to 2021,the water conservation function of evergreen broadleaved forest,Semecarpifolia forest and Armandii forest showed a good growth trend.However,Evelyniana forest and Pinus yunnanensis broadleaved mixed forest did not perform well.(2)The spatial distribution of water conservation is roughly the same as that of rainfall and evapotranspiration,but different from that of surface runoff.Evergreen broadleaved forest(97.2 mm)had the strongest water conservation function,followed by Semecarpifolia forest(77.6 mm),P.yunnanensis broadleaved mixed forest(71.7 mm),Armandii forest(65.2 mm),and Evelyniana forest(60.188 mm)had the weakest water conservation ability.(3)The influencing factors of water conservation in the five types of forest ecosystems are different and vary greatly,precipitation is the main influence factors(P<0.05),followed by litter accumulation,forest canopy density,and established the coupling of high quantity of water conservation and the significant influencing factors of the linear regression model,to predict the unknown point on the space volume of water conservation.The long-term location monitoring data of forest ecosystem can comprehensively evaluate the water conservation function and development trend of different forest
作者
和娴越
赵洋毅
王克勤
段旭
涂晓云
He Xianyue;Zhao Yangyi;Wang Keqin;Duan Xu;Tu Xiaoyun(Southwest Forestry University,Yunnan 650224,P.R.China)
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2023年第8期77-82,共6页
Journal of Northeast Forestry University
基金
国家自然科学基金项目(42067005)
云南省农业联合专项面上项目(202101BD070001-075)
云南省基础研究计划面上项目(202001AT070136)
云南省省级人才专项项目(YNWR-QNBJ-2019-215、YNWR-QNBJ-2019-226)
国家林草局林业科技创新平台运行项目(2020132550)
云南省自然生态监测网络项目(2022-YN-013)。
关键词
森林水源涵养功能
水量平衡
森林水文
磨盘山
Forest water conservation function
Water balance
Forest hydrology
Mopan Mountain
