Effects of Mowing on Leaf Internal Stability and Leaf and Soil Stoichiometric Characteristics of Legumes and Non-legumes

doi:10.11733/j.issn.1007-0435.2024.05.021

Acta Agrestia Sinica ›› 2024, Vol. 32 ›› Issue (5): 1513-1521.DOI: 10.11733/j.issn.1007-0435.2024.05.021

Effects of Mowing on Leaf Internal Stability and Leaf and Soil Stoichiometric Characteristics of Legumes and Non-legumes

DU Yi^1,2,3,4, SONG Jiao-yang^1,2,3,4, ZHANG Yu-lin^1,2,3,5, CHAI Xu-tian^1,2,3,4, ZHANG Zhi-hao^1,2,3, ISLAM Waqar^1,2,3, ZENG Fan-jiang^1,2,3,4,5

1. Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;
2. State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;
3. Cele National Station of Observation and Research for Desert-Grassland Ecosystem, Cele, Xinjiang 848300, China;
4. University of Chinese Academy of Sciences, Beijing 100049, China;
5. College of Ecology and Environment, Xinjiang University, Urumqi, Xinjiang 830046, China

Received:2023-11-20 Revised:2023-12-19 Published:2024-06-01

刈割对豆科和非豆科植物叶片内稳性及叶片土壤化学计量特征的影响

杜艺^1,2,3,4, 宋佼阳^1,2,3,4, 张玉林^1,2,3,5, 柴旭田^1,2,3,4, 张志浩^1,2,3, ISLAM Waqar^1,2,3, 曾凡江^1,2,3,4,5

1. 中国科学院新疆生态与地理研究所, 新疆荒漠植物根系生态与植被修复重点实验室, 新疆乌鲁木齐 830011;
2. 中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 干旱区生态安全与可持续发展重点实验室, 新疆乌鲁木齐 830011;
3. 新疆策勒荒漠草地生态系统国家野外科学观测研究站, 新疆策勒 848300;
4. 中国科学院大学, 北京 100049;
5. 新疆大学生态与环境学院, 新疆乌鲁木齐 830046

通讯作者: 曾凡江，E-mail:zengfj@ms.xjb.ac.cn
作者简介:杜艺(1995-)，女，汉族，山西运城人，博士研究生，主要从事植物生理生态学和微生物生态学研究，E-mail:duyi1996002001@163.com;宋佼阳(1999-)，女，汉族，四川南充人，硕士研究生，主要从事植物生理生态学和干旱土壤碳循环研究，E-mail:1029535966@qq.com
基金资助:
国家自然科学基金面上项目(42271071)；新疆维吾尔自治区自然科学基金(2021D01D02)共同资助

Abstract

Abstract: To explore nutrient utilization variations between legumes (Medicago sativa) and non-legumes (Cichorium intybus) during growth,we sampled above-ground plant parts and soil at three mowing intervals (60,80,and 100 days after seeding),and computed ecological stoichiometric homeostasis. The findings revealed the leaf N∶K ratio was the highest at the 80^th day,contrary to the leaf P∶K ratio. At the 100^th day,M. sativa showed significantly higher total nitrogen (TN) and N:P ratio in leaves than C. intybus. The homeostasis index for nitrogen,phosphorus,and potassium in C. intybus and M. sativa leaves was H_N>H_K>H_P,underscoring stronger nitrogen regulation of plant. This study unveiled leaf stoichiometric differences between species,stemming from long-term environmental adaptation,genetic traits,stability,and partial autonomy from soil nutrient impact.

Key words: Ecological stoichiometry, Plant nutrients, Homeostasis index, Soil characteristics

摘要： 为了明确豆科和非豆科植物在生长发育过程中养分利用策略的差异。本试验以典型豆科植物苜蓿(Medicago sativa)和非豆科植物菊苣(Cichorium intybus)为研究对象。分别于2021年7月14日(播种后第60 d)、2021年8月3日(播种后第80 d)和2021年8月24日(播种后第100 d)采集地上部分和土壤样品，计算生态化学计量内稳性。结果表明：2种植物叶片氮钾比在播种后第80 d刈割显著高于播种后第100 d刈割，而叶片磷钾比表现相反趋势(P＜0.05)。播种后第100 d刈割，苜蓿叶片全氮含量和氮磷比显著高于菊苣(P＜0.05)。菊苣和苜蓿的叶片氮、磷和钾的内稳性指数均表现为H_N＞ H_K＞ H_P，表明植物对氮元素的调控能力更强。这项研究发现叶片化学计量特征存在物种间差异，这种差异是物种对环境长期适应的结果，与自身遗传特征有关，具有相对稳定性，并非全部受制于土壤养分的影响。

关键词: 生态化学计量, 植物养分, 内稳性指数, 土壤特性

CLC Number:

Q938.1+3

DU Yi, SONG Jiao-yang, ZHANG Yu-lin, CHAI Xu-tian, ZHANG Zhi-hao, ISLAM Waqar, ZENG Fan-jiang. Effects of Mowing on Leaf Internal Stability and Leaf and Soil Stoichiometric Characteristics of Legumes and Non-legumes[J]. Acta Agrestia Sinica, 2024, 32(5): 1513-1521.

杜艺, 宋佼阳, 张玉林, 柴旭田, 张志浩, ISLAM Waqar, 曾凡江. 刈割对豆科和非豆科植物叶片内稳性及叶片土壤化学计量特征的影响[J]. 草地学报, 2024, 32(5): 1513-1521.

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Effects of Mowing on Leaf Internal Stability and Leaf and Soil Stoichiometric Characteristics of Legumes and Non-legumes

刈割对豆科和非豆科植物叶片内稳性及叶片土壤化学计量特征的影响

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