ISWC OpenIR  > 水保所知识产出(1956---)
黄土丘陵区草地植被群落优势种叶片 功能性状对氮磷添加的响应
杨全1,2; 陈志飞3; 周俊杰3; 赖帅彬3; 简春霞3; 王智1,3; 徐炳成1,3
2019
发表期刊应 用 生 态 学 报
卷号30期号:11页码:3697-3706
摘要
以黄土丘陵区草地植被群落 3 种优势种白羊草长芒草和达乌里胡枝子为对象,采
用裂区试验设计,设置 0
50 100 kg N·hm-2·a-1 3 个氮处理和 0
40 80 kg P2O5·hm-2·
a-1 3 个磷处理,于生长旺盛期测定了各植物的叶长叶宽比叶面积叶片干物质含量叶片
磷含量和氮磷比等指标,分析不同优势种叶片功能性状对氮磷添加的响应差异结果表
明: 与未施肥相比,
50 100 kg N·hm-2·a-1 处理下白羊草叶长和叶宽分别显著增加 35.3%
64.4%,而长芒草仅有叶长显著增加 58.8%,达乌里胡枝子仅有叶宽显著增加 33.9%,但三
者叶片干物质含量分别显著降低 10.7%
15.3%11.2%,白羊草和长芒草叶片氮含量分别显
著增加 23.0%99.2%,氮磷比分别显著增加 45.8%96.9%; 40 80 kg P2O5·hm-2·a-1
理下达乌里胡枝子叶长叶宽和比叶面积分别显著增加 56.9%
41.4%19.6%,叶片干物质
含量显著下降 14.9%,三者叶片磷含量分别显著增加 96.7%
110.9%238.4%,氮磷比分别显
著降低 45.8%
42.8%53.7%.50 kg N·hm-2·a-1 处理下,与未施磷相比,
40 80 kg P2O5·
hm-2·a-1 处理后仅达乌里胡枝子叶长和叶宽显著增大,
3 种植物叶片磷含量显著增加,白羊
草和长芒草叶片氮含量显著降低; 100 kg N·hm-2·a-1 处理下,施磷后白羊草和长芒草叶长
达乌里胡枝子叶宽显著增大,三者叶片磷含量显著增加,白羊草叶片氮含量显著降低综上表
明,
3 个优势种植物叶片功能性状对短期氮磷添加的响应存在明显差异,这些差异与物种属性
和施肥水平有关,不同优势种对氮磷添加响应的差异对维持草地群落多样性和稳定性具有重
要作用
其他摘要
To analyze plant functional traits of dominant species to nitrogen and phosphorus addi-
tionthree species ( Bothriochloa ischaemumStipa bungeanaand Lespedeza davurica ) were
selected in the loess hilly-gully region. A split-plot experiment which included three N treatments
( 050and 100 kg N·hm-2·a-1 ) and three P treatments ( 040and 80 kg P2O5·hm-2·
a-1 ) was conducted. At the fast-growing stageleaf lengthleaf widthspecific leaf arealeaf dry
matter contentleaf N contentleaf P contentand leaf N: P were measured. Results showed that
under 50 and 100 kg N·hm-2·a-1 treatmentsleaf length and width of B. ischaemum increased
significantly by 35.3% and 64.4%respectivelywhile only the leaf length of S. bungeana and the
leaf width of L. davurica increased significantly by 58.8% and 33.9%respectively. Leaf dry matter
content of the three species decreased significantly by 10. 7%15. 3% and 11. 2%respectively.
Leaf N content and N: P of B. ischaemum and S. bungeana increased significantly by 23.0% and
99.2%45.8% and 96.9%respectivelycompared with unfertilized treatments. Under 40 and 80
kg P2 O5 ·hm-2 ·a-1
treatmentsleaf lengthleaf width and specific leaf area of L. davurica
increased significantly by 56.9%41.4% and 19.6%respectivelywhile leaf dry matter content
decreased significantly by 14.9%. Leaf P content of three species increased significantly by 96.7%
110.9% and 238. 4%while the N: P decreased significantly by 45. 8%42. 8% and 53. 7%
respectivelycompared with those under unfertilized. Under 50 kg N·hm-2·a-1 treatmentcom-
pared with no P applicationleaf length and leaf width of L. davurica and leaf P content of the three
species significantly increasedand leaf N content of B. ischaemum and S. bungeana decreased sig-
nificantly at 40 and 80 kg P2O5·hm-2·a-1 treatments. Under 100 kg N·hm-2·a-1 treatment
leaf length of B. ischaemum and S. bungeanaleaf width of L. davurica and leaf P content of three
species significantly increasedwhile leaf N content of B. ischaemum decreased significantly after P
application. In summaryfunctional traits of dominant species showed significant responses to short-
term nitrogen and phosphorus additionwith the different responses were mainly related to species
traits and fertilization levels. Such difference reflected plant adaptation to habitat changes. The
divergent responses of different species to nitrogen and phosphorus addition played an important role
in maintaining diversity and stability of grassland communities.
关键词功能性状 氮磷添加 养分限制 适应性
收录类别中文核心期刊要目总览
语种中文
文献类型期刊论文
条目标识符sbir.nwafu.edu.cn/handle/361005/9316
专题水保所知识产出(1956---)
作者单位1.中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室
2.中国科学院大学
3.西北农林科技大学水土保持研究所
第一作者单位中国科学院水利部水土保持研究所
推荐引用方式
GB/T 7714
杨全,陈志飞,周俊杰,等. 黄土丘陵区草地植被群落优势种叶片 功能性状对氮磷添加的响应[J]. 应 用 生 态 学 报,2019,30(11):3697-3706.
APA 杨全.,陈志飞.,周俊杰.,赖帅彬.,简春霞.,...&徐炳成.(2019).黄土丘陵区草地植被群落优势种叶片 功能性状对氮磷添加的响应.应 用 生 态 学 报,30(11),3697-3706.
MLA 杨全,et al."黄土丘陵区草地植被群落优势种叶片 功能性状对氮磷添加的响应".应 用 生 态 学 报 30.11(2019):3697-3706.
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