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氮磷添加对不同退耕年限草本植被群落及 土壤化学计量特征的影响
刘海威1,2; 张少康3; 焦 峰1,3
2017
Source Publication水土保持学报
Volume31Issue:2Pages:333-338
Abstract

采用空间代替时间的方法,根据安塞县纸坊沟小流域 8 个退耕年限序列( 1~35 年)的退耕地采样数
据进行分析,研究植物群落与土壤化学计量学特征对不同施肥处理的响应程度。结果表明:( 1 )与未施肥
相比,施 N 肥和施 N 肥 +P 肥后,地上生物量分别增加了 77.1% 和 142.0% 。地上生物量对不同施肥处理
的响应程度表现为施 N 肥 +P 肥组合高于单一添加 N 肥。( 2 )与未施肥相比,施 N 肥后叶片氮、磷含量分
别增加了 13.6% 和 0.6% ,氮磷比下降了 3.8% ;施 N 肥 +P 肥后叶片氮、磷含量分别增加了 15.6% 和
8.7% ,氮磷比下降了 15.2% ,叶片 N 、 P 含量及氮磷比对施 N 肥 +P 肥的响应程度均高于单一施 N 肥。
( 3 )与未施肥相比,施 N 肥后土壤 N 、 P 含量分别增加了 27.7% 和 36.2% , N / P 比下降了 9.1%
;施
N 肥 +
P 肥后土壤 N 、 P 含量分别增加了 16.6% 和 25.0% , N / P 比下降了 9.1% ,土壤 N 、 P 含量对施 N 肥的响应
程度略高于施 N 肥 +P 肥。总体而言,适当的施肥方式有利于植物对土壤养分的利用和分配。

Other Abstract

Using  comparative analysis and substituting  temporal serial with spatial serial data , we analyzed
data collected from abandoned farmlands with eight different vegetation restoration years ( 1to 35years ) .
The responses of plant community  and soil stoichiometry
to different fertilization treatments were studied.
The results were as follows :( 1 ) Compared with the no fertilization treatment , the aboveground biomass was
increased by  77.1% and 142.0% by
the + N and + N+P treatment , respectively.The response of
aboveground biomass to the+N+P treatment was more significant than to the+N treatment.Compared
with the no fertilization treatment , leaf N and P concentration was increased by  13.6%and 0.6% , while the
N / P ratio was reduced by  3.8% by  the+N treatment.Leaf N and P concentration was increased by  15.6%
and 8.7% , while the N / P ratio was reduced by  15.2% by  the+N+P treatment.The responses of leaf N
and P concentration , and N / P ratio to the +N+P treatment were all more significant than to the +N
treatment.Compared with the no fertilization treatment , soil N and P content was increased by  27.7% and
36.2% , respectively , and N / P ratio was reduced by  9.1% by  the+N treatment.Soil N and P content was
increased by  16.6%and 25.0% ,
respectively , and N
/ P ratio was reduced by
9.1%by  the+N+P treatment.The
responses of soil N and P content to the+N treatment were more significant than to the+N+P treatment.In
conclusion , aproper fertilization mode is beneficial to the utilization and distribution of soil nutrients.

Keyword草地群落 氮磷添加 黄土丘陵区 土壤 化学计量
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8372
Collection水保所知识产出(1956---)
Corresponding Author焦 峰
Affiliation1.中国科学院水利部水土保持研究所,陕西 杨凌 712100
2.中国科学院大学,北京 100049
3.西北农林科技大学水土保持研究所,陕西 杨凌 712100
First Author Affilication中国科学院水利部水土保持研究所
Corresponding Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
刘海威,张少康,焦 峰. 氮磷添加对不同退耕年限草本植被群落及 土壤化学计量特征的影响[J]. 水土保持学报,2017,31(2):333-338.
APA 刘海威,张少康,&焦 峰.(2017).氮磷添加对不同退耕年限草本植被群落及 土壤化学计量特征的影响.水土保持学报,31(2),333-338.
MLA 刘海威,et al."氮磷添加对不同退耕年限草本植被群落及 土壤化学计量特征的影响".水土保持学报 31.2(2017):333-338.
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