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通过山坡水文过程调节土壤氧化排放和泄漏

Ruidong Chen¹, Wanqi Shen¹, Ziting Chen¹

¹School of Geography and Ocean Science, Nanjing University, Nanjing, Jiangsu province 210023, China.

The Science of the total environment

|August 21, 2024

概括

土壤水文学显著影响气损失. 茶叶种植园排放的氧化 (N2O) 是竹林的8.2倍,气 (N) 是竹林的18.0倍,尤其是在大雨期间.

科学领域:

环境科学环境科学
土壤科学土壤科学
生态生态学生态生态学

背景情况:

通过二氧化 (N2O) 排放和排放造成的土壤 (N) 损失对全球变暖和水的优化产生影响.
山坡生态系统面临显著的N损失,但空间时空模式和N2O排放和N出水的水文驱动因素不明.

研究的目的:

为了研究液和土壤氧化 (N2O) 流中的 (N) 度.
为了确定N损失路径对茶叶种植园 (TP) 和竹林 (BF) 山坡的土壤水文因素的反应.

主要方法:

描述了四种降水模式:春季降雨 (SR),梅雨 (PR),夏季洪水降雨 (SF) 和干旱期 (DR).
在TP和BF山坡上监测土壤N2O流量和液N度.
分析了土壤含水量 (SWC) 和土壤湿度指数 (SWI) 对N损失的影响.

主要成果:

与BF山坡相比,TP山坡的N2O流量是8.2倍高,液N度是18.0倍高.
峰值N2O流量发生在PR期间;最低流量发生在DR期间. 液N度的峰值是在SR期间.
土壤湿度增加 (SWC,SWI) 刺激了N循环,导致N2O排放量增加和酸盐出,特别是在高SWI地区.

结论:

由降水和土壤湿度驱动的土壤水文过程显著控制了山坡生态系统中的N2O排放和N泄漏.
土地管理,特别是茶叶种植园,需要仔细考虑水文因素,以减轻气损失.

关键词:

酸盐的同位素是酸盐的同位素.的泄露是指的泄露.降水模式降水模式土壤 N(2) OO 的情况.土壤水文连接性土壤水文连接性茶叶种植园茶叶种植园

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