Differential responses of soil extracellular enzyme activity and stoichiometry to precipitation changes in a poplar plantation

降水 生物地球化学循环 生态化学计量学 化学 化学计量学 垃圾箱 生态系统 土壤水分 酶分析 环境化学 农学 生态学 生物 生物化学 物理 气象学 有机化学
作者
Yuan Sun,Xinli Chen
出处
期刊:Environmental Research [Elsevier BV]
卷期号:241: 117565-117565 被引量:7
标识
DOI:10.1016/j.envres.2023.117565
摘要

Changes in precipitation patterns can significantly affect belowground processes. Although soil extracellular enzymes play a vital role in several biogeochemical processes, our knowledge of how precipitation changes affect soil extracellular enzyme activity (EEA) and stoichiometry remains insufficient. In this study, we investigated the activities of C-acquiring enzyme (β-1,4-glucosidase), N-acquiring enzymes (β-N-acetylglucosaminidase and leucine aminopeptidase), and P-acquiring enzyme (acid phosphatase) under different precipitation scenarios [ambient precipitation (CK), 30% decrease in precipitation (moderate DPT), 50% decrease in precipitation (extreme DPT), 30% increase in precipitation (moderate IPT), and 50% increase in precipitation (extreme IPT)] in a poplar plantation. We found soil EEA exhibited more pronounced increases to moderate IPT compared to moderate DPT (positive asymmetry), the opposite trend (negative asymmetry) was observed under extreme precipitation; whereas soil EEA C:N:P stoichiometry exhibited negative asymmetry at moderate precipitation changes, and exhibited positive asymmetry at extreme precipitation changes. Under moderate precipitation changes, the asymmetry of soil EEA was mainly regulated by asymmetries of respective microbial biomass and litter mass; the asymmetry of soil EEA stoichiometry was mainly regulated by asymmetries of respective soil stoichiometric ratios and litter mass. Furthermore, under extreme precipitation changes, the asymmetries of soil EEA and stoichiometry were best explained by the asymmetry of soil moisture. Our results provide the first evidence of double asymmetric responses of soil EEA and stoichiometry to precipitation changes and highlight the need to consider this asymmetry when modeling the dynamics of biogeochemical cycling in forest ecosystems.
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
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
lvshiwen完成签到,获得积分10
1秒前
完美世界应助cuifeng采纳,获得30
1秒前
suiyi发布了新的文献求助10
2秒前
科研通AI5应助笨笨忘幽采纳,获得10
3秒前
5秒前
传奇3应助AKK采纳,获得10
5秒前
8秒前
HY完成签到 ,获得积分10
8秒前
李健应助leoluo采纳,获得10
9秒前
10秒前
深情安青应助宋晓静采纳,获得10
10秒前
Nancy发布了新的文献求助10
10秒前
Duke_ethan完成签到,获得积分10
13秒前
13秒前
tcf完成签到,获得积分10
14秒前
纪间完成签到,获得积分10
15秒前
卓初露完成签到 ,获得积分10
20秒前
21秒前
oysp完成签到,获得积分10
23秒前
26秒前
无花果应助upandcoming采纳,获得10
26秒前
GreenT完成签到,获得积分10
27秒前
LL发布了新的文献求助10
27秒前
_ban完成签到 ,获得积分10
27秒前
Solarenergy完成签到,获得积分0
31秒前
xieji发布了新的文献求助10
32秒前
小文殊完成签到 ,获得积分10
32秒前
32秒前
33秒前
33秒前
蓝桉发布了新的文献求助30
37秒前
科研通AI5应助fjyk采纳,获得30
37秒前
AKK发布了新的文献求助10
38秒前
leoluo发布了新的文献求助10
38秒前
zlx发布了新的文献求助10
38秒前
42秒前
duotianzhiyi完成签到,获得积分10
43秒前
46秒前
hcjxj完成签到,获得积分10
46秒前
zlx完成签到,获得积分10
47秒前
高分求助中
【此为提示信息,请勿应助】请按要求发布求助,避免被关 20000
Continuum Thermodynamics and Material Modelling 2000
Encyclopedia of Geology (2nd Edition) 2000
105th Edition CRC Handbook of Chemistry and Physics 1600
Maneuvering of a Damaged Navy Combatant 650
Периодизация спортивной тренировки. Общая теория и её практическое применение 310
Mixing the elements of mass customisation 300
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 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3779389
求助须知:如何正确求助?哪些是违规求助? 3324920
关于积分的说明 10220490
捐赠科研通 3040099
什么是DOI,文献DOI怎么找? 1668560
邀请新用户注册赠送积分活动 798721
科研通“疑难数据库(出版商)”最低求助积分说明 758522