香榧幼林开垦对绍兴汤浦水库氮输入的影响  

Effect of Young Torreya grandis ’Merrillii’ Plantation on Nitrogen Input in Tangpu Reservoir of Shaoxing

作　　者：傅舜宇 张青 陶宇 鲍依群 FU Shun-yu;ZHANG Qing;TAO Yu;BAO Yi-qun(Shaoxing Water Environment Research Institute Co.,Ltd of Zhejiang,Shaoxing 312000,China)

机构地区：[1]绍兴市水环境科学研究院有限公司,浙江绍兴312000

出　　处：《浙江林业科技》2021年第6期15-23,共9页Journal of Zhejiang Forestry Science and Technology

摘　　要：2016—2018年,本研究对香榧Torreya grandis ‘Merrillii’幼林,特别是开垦形成的香榧幼林对汤浦水库流域的非点源氮输入的影响进行研究,旨在为保护水库水质和非点源污染治理提供依据;基于SWAT模型对汤浦水库的氮输入进行了模拟,对上游流域非点源污染的关键区域和对入库氮贡献最大的土地利用方式进行了识别;设计了针对香榧幼林的径流小区试验;径流小区试验和上游河道断面的水质数据被共同用作校准SWAT模型对香榧集中种植区对入库氮贡献的模拟结果。研究结果表明:南溪南部榆树支流、竹溪支流上游等香榧集中种植区是汤浦水库流域非点源氮污染的关键区域;占流域面积约6%的香榧幼林可提供约45%的入库总氮,是对入库总氮贡献最大的土地利用方式。During 2016 and 2018, investigations were carried out on Tangpu Reservoir basin, especially on plantation of young Torreya grandis ’Merrillii’ on non-point source nitrogen input in the reservoir. The nitrogen input in Tangpu Reservoir was simulated by SWAT model, the key areas of non-point source pollution in upstream and the landuse type which contributed the most to the nitrogen input were identified. The runoff plot experiment was implemented in young T. grandis ’Merrillii’ plantation. The water quality data of runoff plot experiment and upstream river sections were used to calibrate the simulation results of the contribution of T. grandis ’Merrillii’ plantation on nitrogen input in the SWAT model. The result of SWAT model simulation showed that young T. grandis ’Merrillii’ plantations was the key areas of non-point source nitrogen pollution in Tangpu Reservoir basin. 6% of the total basin area contributed 45% of nitrogen input into Tangpu Reservoir.

关 键 词：香榧 汤浦水库 总氮 SWAT模型 径流小区 

分 类 号：X171.1[环境科学与工程—环境科学]