Understory vegetation interacts with nitrogen addition to affect soil phosphorus transformations in a nutrient-poor Pinus sylvestris var. mongolica plantation

下层林 营养物 氮气 矿化(土壤科学) 化学 生物量(生态学) 农学 营养循环 环境化学 动物科学 植物 天蓬 生物 有机化学
作者
Xiang Zhang,Qiong Zhao,Qingye Sun,Bing Mao,De‐Hui Zeng
出处
期刊:Forest Ecology and Management [Elsevier BV]
卷期号:507: 120026-120026 被引量:10
标识
DOI:10.1016/j.foreco.2022.120026
摘要

Globally increasing atmospheric nitrogen (N) deposition has aggravated phosphorus (P) limitation in many forests around the world. However, how N deposition affects soil P transformations and what is the role of understory vegetation in regulating these N deposition impacts are largely unknown. Here, we examined soil P transformation characteristics (P fractions, adsorption capacity, and related soil physicochemical properties) in a nutrient-poor Mongolian pine (Pinus sylvestris var. mongolica) plantation that has been subjected to six years of N addition and understory removal treatments in northern China. Nitrogen addition alone significantly elevated labile and moderately labile organic P concentrations by 1.2 times and 24.1%, but decreased labile inorganic P and occluded P concentrations by 42.8% and 41.5%. Nitrogen addition elevated maximum P adsorption capacity, but did not affect maximum buffer capacity. Understory removal alone significantly reduced occluded P concentration by 38.6% but did not affect other P fractions. There were significantly negative interactions between understory removal and N addition on labile inorganic P, all organic P fractions and occluded P concentrations, as N addition effects on these variables were non-significant when the understory vegetation was removed. These results indicate that N addition depressed mineralization of organic P, but accelerated solubilization of occluded P, and these N addition effects were alleviated by understory removal. Significantly positive correlations between soil pH, microbial biomass and P fractions suggest that reduction in soil pH and microbial biomass are largely responsible for the variation in soil P fractions. These findings greatly improve our understanding of the consequences of N addition on soil organic and inorganic P transformations and the role of understory vegetation in affecting the responses of soil P transformation to N deposition.
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
Hcristiano完成签到,获得积分10
刚刚
1秒前
1秒前
梦XING发布了新的文献求助10
1秒前
漫游全世界的背包猫猫完成签到,获得积分10
1秒前
milkcoffe发布了新的文献求助10
2秒前
云舒发布了新的文献求助10
2秒前
2秒前
冷静访梦发布了新的文献求助10
2秒前
chang000发布了新的文献求助10
2秒前
orixero应助hyx采纳,获得10
2秒前
3秒前
3秒前
3秒前
WYK完成签到 ,获得积分10
3秒前
XU发布了新的文献求助10
3秒前
4秒前
4秒前
Bismarck发布了新的文献求助10
4秒前
4秒前
刘莲芒果冰完成签到,获得积分10
5秒前
6秒前
流苏发布了新的文献求助10
6秒前
文艺帽子完成签到,获得积分10
6秒前
LeafJin完成签到 ,获得积分10
6秒前
bhkwxdxy完成签到,获得积分10
6秒前
可爱的函函应助milkcoffe采纳,获得10
7秒前
7秒前
谦让雨柏发布了新的文献求助10
7秒前
明亮囧发布了新的文献求助10
7秒前
7秒前
7秒前
8秒前
jiajia发布了新的文献求助10
8秒前
8秒前
柒柒发布了新的文献求助10
9秒前
波波完成签到 ,获得积分10
9秒前
9秒前
LSJ发布了新的文献求助30
9秒前
科目三应助dream采纳,获得10
10秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 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 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 3974844
求助须知:如何正确求助?哪些是违规求助? 3519270
关于积分的说明 11197844
捐赠科研通 3255496
什么是DOI,文献DOI怎么找? 1797791
邀请新用户注册赠送积分活动 877187
科研通“疑难数据库(出版商)”最低求助积分说明 806202