相关实验视频

Updated: Jul 7, 2025

Assessing the Particulate Matter Removal Abilities of Tree Leaves

Assessing the Particulate Matter Removal Abilities of Tree Leaves

Published on: October 7, 2018

在中国陆地生态系统中,大气湿沉积的多元体积计比

Yanran Chen¹, Qiufeng Wang¹, Jianxing Zhu²

¹Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China.

Environmental research

|December 23, 2023

概括

大气湿沉积对中国的生态系统产生影响, (N) 和其他元素的比例各不相同. 高沉积可能会使某些生态系统的 (P) 限制恶化.

科学领域:

环境化学环境化学
生态系统生态学生态学
大气科学大气科学

背景情况:

人类活动改变了大气组成,通过湿和干沉积影响了生态系统的元素循环.
了解大气湿沉积中的多元素固态度比对于评估生态系统影响至关重要.
关于中国陆地生态系统中大气湿沉积的数据有限.

研究的目的:

为了确定中国陆地生态系统中大气湿沉积的多元素固态度比.
分析湿沉积元素与土壤营养素的比例的跨年趋势和空间相关性.
调查大气沉积可能影响营养限制的可能性,特别是.

主要方法:

从2013年到2021年,每个月的 (N), (P),硫 (S), (K), (Ca) 和 (Mg) 的降水度都被测量.
由中国湿沉观测网络 (ChinaWD) 收集的数据.
进行了对立体比率,年间趋势和与土壤特性空间相关性的统计分析.

主要成果:

大气湿沉积的多元素固态度比为N: K: Ca: Mg: S: P = 31: 11: 67: 5.5: 28: 1,植被区之间存在差异.
湿沉积N:S和N:Ca比率初步上升,随后下降,而N:P比率从一年到一年有显著的变化.
元素的湿沉积与土壤营养素 (除N外) 有负相关性,这表明土壤有补充作用,特别是在营养不良的地区.
高湿的N沉积和N:P比率与生态系统和土壤P密度较低相关,沉积中的N:P比率超过了生态系统组件中的N:P比率,表明潜在的P限制.

结论:

大气中的湿沉积在补充中国陆地生态系统中的土壤营养素方面发挥着重要作用.
较高的沉积可能会加剧某些生态系统的限制.
这些发现为对多元元素沉积对生态系统影响的受控实验提供了基础.

关键词:

多元元素的多元元素在N:P比率下,空间模式的空间模式石化测量是一种体质测量.时间动态时间动态湿沉积的湿沉积方式

更多相关视频

Assessment of Labile Organic Carbon in Soil Using Sequential Fumigation Incubation Procedures

Assessment of Labile Organic Carbon in Soil Using Sequential Fumigation Incubation Procedures

Published on: October 29, 2016

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

相关概念视频

What are Biogeochemical Cycles?

What are Biogeochemical Cycles?

The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.

The Sulfur Cycle

The Sulfur Cycle

Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...