Influence of soil properties, topography, and land cover on soil organic carbon and total nitrogen concentration: A case study in Qinghai-Tibet plateau based on random forest regression and structural equation modeling

土壤碳 环境科学 土壤科学 土地覆盖 土层 总有机碳 高度(三角形) 高原(数学) 氮气 土壤水分 土地利用 环境化学 生态学 化学 数学 数学分析 生物 有机化学 几何学
作者
Lei Dai,Jingsong Ge,Lingqing Wang,Qian Zhang,Tao Liang,Nanthi Bolan,Gunnar Lischeid,Jörg Rinklebe
出处
期刊:Science of The Total Environment [Elsevier]
卷期号:821: 153440-153440 被引量:29
标识
DOI:10.1016/j.scitotenv.2022.153440
摘要

The effects of topography, land cover type, and soil physicochemical properties on the distribution of soil organic carbon (SOC) and total nitrogen (TN) have drawn growing attention recently, but little is known about how these features-associated interactions impact SOC and TN. To elucidate how these interactions affect the preservation of carbon and nitrogen in soils, we used data-driven models (random forest regression and structural equation modeling) to identify the dominant environmental factors affecting the distribution of SOC and TN in two different soil layers (0-20 and 20-40 cm) of the Qinghai-Tibet plateau. In addition, an algorithm based on random forest ("Boruta") was chosen to identify the relevant influencing factors and partial dependence was used to depict the two most important factors. We found that rather than land cover type, environmental properties, such as soil physicochemical characteristics and altitude had the most significant effects on the distribution of SOC and TN. Our findings indicate that elevation and TN are the two most important factors influencing SOC in the surface and subsurface soil layers. Moreover, total potassium (TK) impacts TN content in the surface soil layer, but only in a specific range of concentrations, which could be attributed to anthropogenic activities such as applying nitrogen and potassium fertilizers to increase the yields of local food crop, Tibetan hulless barley. These findings provide a scientific perspective on soil nutrient preservation.
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
大幅提高文件上传限制,最高150M (2024-4-1)

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
KKacc发布了新的文献求助30
刚刚
nini发布了新的文献求助10
刚刚
刚刚
高兴的风华完成签到 ,获得积分10
1秒前
JamesPei应助wk采纳,获得10
1秒前
4秒前
4秒前
5秒前
7秒前
bji发布了新的文献求助10
8秒前
9秒前
英俊的铭应助小猫恰饭采纳,获得10
9秒前
gege发布了新的文献求助20
10秒前
11秒前
虚心若烟发布了新的文献求助10
11秒前
cheung完成签到,获得积分0
13秒前
昌黎发布了新的文献求助10
15秒前
lcx完成签到,获得积分10
16秒前
三火发布了新的文献求助10
18秒前
18秒前
风趣小小发布了新的文献求助100
20秒前
21秒前
water发布了新的文献求助30
21秒前
23秒前
wangjingli666应助Lws采纳,获得10
23秒前
甜甜百香果完成签到 ,获得积分10
24秒前
25秒前
斯文起眸发布了新的文献求助10
26秒前
26秒前
27秒前
JasonSun发布了新的文献求助10
28秒前
29秒前
29秒前
wangjingli666应助叁壹捌采纳,获得10
30秒前
闵白柏发布了新的文献求助10
30秒前
baibai完成签到,获得积分10
31秒前
31秒前
31秒前
王泽明完成签到,获得积分10
32秒前
32秒前
高分求助中
Manual of Clinical Microbiology, 4 Volume Set (ASM Books) 13th Edition 1000
Teaching Social and Emotional Learning in Physical Education 900
The three stars each : the Astrolabes and related texts 550
Boris Pesce - Gli impiegati della Fiat dal 1955 al 1999 un percorso nella memoria 500
Chinese-English Translation Lexicon Version 3.0 500
Recherches Ethnographiques sue les Yao dans la Chine du Sud 500
[Lambert-Eaton syndrome without calcium channel autoantibodies] 460
热门求助领域 (近24小时)
化学 材料科学 医学 生物 有机化学 工程类 生物化学 纳米技术 物理 内科学 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 电极 光电子学 量子力学
热门帖子
关注 科研通微信公众号,转发送积分 2399481
求助须知:如何正确求助?哪些是违规求助? 2100241
关于积分的说明 5294957
捐赠科研通 1828090
什么是DOI,文献DOI怎么找? 911167
版权声明 560133
科研通“疑难数据库(出版商)”最低求助积分说明 487058