[Changes of the concentrations and stoichiometry of carbon, nitrogen and phosphorus in soil aggregates along different altitudes of Helan Mountains, Northwest China.]

高度(三角形) 淤泥 土壤水分 氮气 干旱 土壤碳 环境科学 化学 营养物 土壤科学 地质学 地貌学 古生物学 几何学 数学 有机化学
作者
Mengyao Wu,Chen Lin,Danbo Pang,Bo Liu,Lizhen Liu,Kaiyang Qiu,Xuebin Li
出处
期刊:Journal of Applied Ecology [Wiley]
卷期号:32 (4): 1241-1249 被引量:2
标识
DOI:10.13287/j.1001-9332.202104.029
摘要

Exploring the distribution patterns of soil nutrients in aggregates of forests along different altitudes in arid and semi-arid areas can provide a theoretical basis for understanding nutrient cycling in vulnerable mountain ecosystems. In this study, we analyzed the distribution and stability of aggregates in the 0-20 cm soil layer along different altitudes (1380-2438 m) of Helan Mountains and measured the storage and stoichiometric characteristics of organic carbon, total nitrogen, and total phosphorus in soil aggregates. Results showed that the main soil aggregates of Helan Mountains changed from micro-aggregates (0.25-0.053 mm) to macro-aggregates (>0.25 mm) with increa-sing elevation. The mean weight diameter (MWD) and geometric mean diameter (GMD) of soil aggregates in high altitude (2139-2248 m) were significantly higher than those in low altitude (1380-1650 m). The content and storage of organic carbon and total nitrogen in soil aggregates of different size fractions were positively correlated with altitude, while the content of total phosphorus fluctuated with the increase in elevation and distributed uniformly in aggregates. Macro-aggregates and micro-aggregates had more contribution to soil nutrient storage than the silt and clay fractions, indicating that the proportion of aggregates with different size fractions was the key factor affecting soil nutrient storage and that macro-aggregates and micro-aggregates were the main carriers of soil nutrients. Moreover, the C:N ratio in aggregates of different size fractions did not change across different altitudes, whereas the C:P and N:P ratio were higher at mid and high elevations than those at low elevations. Our results indicated that the mid and high elevations of Helan Mountains had higher nutrient storage in the surface soil layer, and that higher content of macro-aggregates and micro-aggregates would help to retain organic carbon and nutrients in the soil. Soil nitrogen limitation was strong at low altitude in our study, suggesting that the appropriate amount of nitrogen addition in low altitudes could improve total nitrogen status during forest cultivation.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
等光来发布了新的文献求助10
刚刚
斯文败类应助Lord采纳,获得10
1秒前
2秒前
2秒前
墨菲特发布了新的文献求助10
3秒前
3秒前
顾矜应助jojo采纳,获得10
4秒前
灌肠高手发布了新的文献求助10
4秒前
康康发布了新的文献求助10
5秒前
星辰大海应助晨晨尼采纳,获得10
5秒前
Spencer完成签到 ,获得积分10
5秒前
炙热雅琴发布了新的文献求助10
6秒前
big烂泥完成签到,获得积分10
6秒前
乐乐应助YYT采纳,获得10
7秒前
phoenix001发布了新的文献求助10
7秒前
羽翼完成签到,获得积分10
8秒前
唠叨的宝马完成签到,获得积分20
8秒前
量子星尘发布了新的文献求助30
8秒前
9秒前
9秒前
10秒前
顾难摧完成签到 ,获得积分10
10秒前
俭朴的小熊猫完成签到,获得积分10
10秒前
11秒前
11秒前
12秒前
www完成签到,获得积分10
12秒前
搜集达人应助lianqing采纳,获得10
12秒前
思源应助kiwiii采纳,获得10
12秒前
爆米花应助灌肠高手采纳,获得10
13秒前
jojo完成签到,获得积分10
13秒前
垃圾桶发布了新的文献求助10
14秒前
14秒前
Morty完成签到,获得积分10
14秒前
FashionBoy应助芝麻芝麻开门采纳,获得10
15秒前
Zxc发布了新的文献求助10
15秒前
15秒前
汤圆发布了新的文献求助10
15秒前
C女士发布了新的文献求助10
16秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Toward a Combinatorial Approach for the Prediction of IgG Half-Life and Clearance 500
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3970004
求助须知:如何正确求助?哪些是违规求助? 3514701
关于积分的说明 11175468
捐赠科研通 3250051
什么是DOI,文献DOI怎么找? 1795187
邀请新用户注册赠送积分活动 875630
科研通“疑难数据库(出版商)”最低求助积分说明 804925