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上面与下面的静态度的减弱不对称性,在站式开发过程中增加了十年的

Shijie Ning¹, Xinru He¹, Tian Ma¹

¹State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China.

|October 27, 2024

概括

高沉积在森林中创造了地面和地下的立体测量不对称性,随着树木的老化而减少. 这影响了碳捕获,特别是在年轻的森林中,突出了灵活的石化学.

科学领域:

生态生态学生态生态学
生物地质化学生物地质化学
森林科学森林科学森林科学

背景情况:

人为 (N) 沉积影响陆地生态系统的运作和碳 (C) 捕获.
了解生态固体测量在植树对沉积的反应中的作用至关重要.
在N添加下表层与地下静态度不对称的变化,与N添加下的立场年龄的变化不太了解.

研究的目的:

为了研究长期N添加下桃种植园的地面和地下组成部分的生态固体测量 (N:P比) 的变化.
评估置年龄对对不同沉积水平的静态度反应的影响.
阐明驱动森林碳捕集和静态恒温的机制.

主要方法:

一个十年的实验涉及三个N添加水平 (控制,低,高) 在年轻,中等和成熟的桃种植园.
分析叶子,垃圾,土壤和微生物生物质中的和 (P) 度.
评估不同种群年龄和N种治疗的固体测量不对称性和营养限制.

主要成果:

低添加剂对静脉测量没有显著影响.
高添加引发了显著的地面和地下石化计不对称性,随着立场年龄的增长而减少.
年轻和中等种群从N限制转向N-P联合限制,而成熟种群仍然没有N限制.
土壤微生物在所有处理和耐用年龄中始终显示P限制.

结论:

长期的沉积会产生静态度失衡,特别是在高沉积率下.
在N丰富下,树木 (N-限制) 和微生物 (P-限制) 之间的利基区分会影响静态度平衡.
森林C水槽动力学是通过上方与地下的立体几何不对称度来调节的,特别是在年轻的森林中.
灵活的固体测量是预测未来森林碳捕获潜力的关键因素.

关键词:

动态平衡是动态平衡的情况.生态系统 C 循环循环.林业继承森林的继承营养素的可用性营养素的可用性站着的年龄年龄年龄.静止学灵活性静止学灵活性

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