Topsoil Carbon Sequestration Characteristics and Influencing Factors for Two Grasslands in Loess Hilly Region

WANG Qiong-fang; CHEN Yun-ming; CAO Yang; CUI Jing; ZHANG Ting

doi:10.13961/j.cnki.stbctb.2014.01.061

您当前的位置：

首页 >

文章列表页 >

Topsoil Carbon Sequestration Characteristics and Influencing Factors for Two Grasslands in Loess Hilly Region

- Topsoil Carbon Sequestration Characteristics and Influencing Factors for Two Grasslands in Loess Hilly Region
- Bulletin of Soiland Water Conservation Vol. 33, Issue 1, Pages: 58-64(2014)
- 作者机构：
  
  1. 张家川回族自治县水务局,甘肃,天水,741500
  2. 西北农林科技大学, 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  3. 西北农林科技大学资源环境学院, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.01.061
  CLC：
- Published：2014
- 稿件说明：
移动端阅览
WANG Qiong-fang, CHEN Yun-ming, CAO Yang, et al. Topsoil Carbon Sequestration Characteristics and Influencing Factors for Two Grasslands in Loess Hilly Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 58-64.
DOI：

WANG Qiong-fang, CHEN Yun-ming, CAO Yang, et al. Topsoil Carbon Sequestration Characteristics and Influencing Factors for Two Grasslands in Loess Hilly Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 58-64. DOI： 10.13961/j.cnki.stbctb.2014.01.061.

摘要

采用野外调查与室内分析相结合的方法

分析了黄土丘陵区长芒草(Stipa bungeana)、白羊草(Bothriochloa ischaemum)草地表层(0-20 cm)土壤有机碳(SOC)及其与地形、土壤、植被等因子的相关性

以期揭示自然恢复过程土壤固碳特征及显著影响因子。结果表明

不同恢复年限长芒草群落土壤表层SOC平均含量14~18 a显著增加

年均增加量为0.295 g/kg;18~26 a增加平缓

年均增加量为0.186 g/kg;26~45 a略微下降

45 a SOC平均含量分别低于26 a(8.92%

3.18%)

差异均不显著。白羊草群落则表现25~40 a平缓增加

年均增加量为0.054 g/kg

40~45 a以上显著增加

40 a SOC平均含量低于45 a以上29.38%

差异显著(p<0.05)。不同土层剖面

SOC含量均表现为土层0-10>土层10-20 cm。土壤总SOC密度变化趋势与SOC平均含量一致。相关分析表明

长芒草、白羊草群落SOC平均含量随着恢复年限、地上生物量、地下生物量、全氮的增加而增加

随着海拔、容重的增加而减小。随着恢复年限的增加

长芒草、白羊草群落土壤表层SOC存在明显固存效应

海拔、恢复年限、地上生物量、地下生物量、全氮、容重为显著影响因子。

Abstract

Combing field investigation with laboratory analysis

we studied soil organic carbon(SOC) content in topsoil(0-20 cm) with different ages of the Stipa bungeana and Bothriochloa ischaemum grassland communities and presented the correlations of SOC content with geography

soil and vegetation characteristics of the communities in the loess hilly region

in order to proclaim soil carbon sequestration characteristics and notable influencing factors in the natural grassland restoration process. For the Stipa bungeana grassland

average SOC content dramaticlly increased from the 14 a to 18 a

with an average annual increment of 0.295 g/kg. The average SOC content gently increased first from the 18 a to 26 a

with an average annual increment of 0.186 g/kg

and then gradually decreased from the 26 to 45 a. The average SOC contents in 33 a and 45 a were 8.92% and 3.18% lower than that in the 25 a

respectively

but the difference was not significant. For the Bothriochloa ischaemum grassland

average SOC content gently increased from the 25 a to 40 a

with an average annual increment of 0.054 g/kg. The average SOC content obviously increased from the 40 a to 45 a

and the average SOC content in the 40 a was only 29.38% of that in the 45 a

and the difference was significant(p<0.05). SOC content in 0-10 cm soil layer was higher than that in 10-20 cm soil layer. Correlation analysis indicated that average SOC contents for Stipa bungeana and Bothriochloa ischaemum grasslands increased with the increases in restoration year

aboveground biomass

underground biomass and soil total nitrogen

and decreased with altitude and soil bulk density. Therefore

topsoils of Stipa bungeana and Bothriochloa ischaemum grasslands show the obvious function of carbon sequestration. Altitude

restoration year

aboveground biomass

underground biomass

soil total nitrogen and soil bulk density are the significant factors.

关键词

Keywords

references

程积民,程杰,杨晓梅,等.黄土高原草地植被碳密度的空间分布特征[J].生态学报,2012,32(1):227-237.

郭曼,郑粉莉,和文祥,等.黄土丘陵区不同退耕年限植被多样性变化及其与土壤养分和酶活性的关系[J].土壤学报,2010,47(5):980-985.

焦菊英,张振国,贾燕锋,等.陕北丘陵沟壑区撂荒地自然恢复植被的组成结构与数量分类[J].生态学报,2008,28(7):2981-2997.

马祥华,焦菊英.黄土丘陵沟壑区退耕地自然恢复植被特征以及与土壤环境的关系[J].中国水土保持科学,2005,3(2):15-22.

张娜,梁一民.干旱气候对白羊草群落土壤水分和地上部生长的初步观察[J].生态学报,2000,20(6):964-970.

张桂莲,张金屯,陈林美.山西南部山地白羊草群落的数量分类与排序[J].草业学报,2003,12(3):63-69.

李琪,张金屯,高洪文.山西高原三种白羊草群落的生物量研究[J].草业学报,2003,12(1):53-58.

李兰芳,王涛,张文彦,等.白羊草化学成分的研究[J].沈阳医科大学学报,2000,17(4):269-270.

武春华,陈云明,王国梁.黄土丘陵区典型群落特征及其与环境因子的关系[J].水土保持学报,2008,22(3):64-69.

王国梁,刘国彬.黄土丘陵区长芒草群落对土壤水分入渗的影响[J].水土保持学报,2009,23(3):228-231.

刘伟,程积民,陈芙蓉,等.黄土高原中部草地土壤有机碳密度特征及碳储量[J].草地学报,2011,19(3):425-431.

姚贤良,程云生.土壤物理学[M].北京:农业出版社,1986:8-33.

Franzen D W, Cihacek L J, Hofman V I. Variability of soil nitrate and phosphate under different landscapes[C]//Proceedings of the 3th International Conference on Precision Agriculture. Minneapolis, Minnesota:ASA, CSSA, SSSA, 1996:521-529.

焦峰,温仲明,焦菊英,等.黄土丘陵区退耕地土壤养分变异特征[J].植物营养与肥料学报,2006,11(6):724-730.

解宪丽,孙波,周慧珍,等.中国土壤有机碳密度和储量的估算与空间分布分析[J].土壤学报,2004,41(1):35-43.

武小钢,郭晋平,杨秀云,等.芦芽山典型植被SOC剖面分布特征及碳储量[J].生态学报,2011,31(11):3009-3019.

刘伟,程积民,高阳,等.黄土高原草地土壤有机碳分布及其影响因素[J].土壤学报,2012,49(1):68-76.

孙文义,郭胜利,宋小燕.黄土丘陵沟壑区小流域SOC空间分布及其影响因素[J].生态学报,2011,31(6):1604-1616.

郭志彬.在半干旱黄土高原地区不同干预方式下撂荒地演替植被生物量与土壤物化性质变化[D].兰州:兰州大学,2010.

Thompson M V, Randerson J T, Malmstrom C M, et al. Change in net primary production and net heterotrophic respiration:How much is necessary to sustain the terrestrial carbon sink[J]. Global Biogeochemical Cycles, 1996,10(4):711-726.

IGBP, Terrestrial Carbon Working Group. The terrestrial carbon cycle:Implications for the Kyoto Protocol[J]. Science, 1998,280(5368):1393-1394.

田玉强,欧阳华,宋明华,等.青藏高原样带高寒生态系统SOC分布及其影响因子[J].浙江大学学报,2007,33(4):443-449.

Steltzer H. Soil carbon sequestration with forest expansion in an arctic forest-tundra landscape[J]. Canadian Journal of Forest Research, 2004,34(7):538-1542.

李明峰,董云社,耿元波,等.草原土壤的碳氮分布与CO

排放通量的相关性分析[J].环境科学,2004,25(2):7-11.

张平良,李小刚,李银科,等.高寒农牧交错带植被恢复对SOC、全氮含量的影响[J].甘肃农业大学学报,2007,42(2):98-102.

李晓东.土地利用方式对陇中黄土高原土壤碳素的影响[D].兰州:兰州大学,2009.

曹丽花,刘合满,赵世伟.退化高寒草甸SOC分布特征及与土壤理化性质的关系[J].草业科学,2011,28(8):1411-1415.

Views

1452

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Emergy evaluation and sustainability analysis of typical agroforestry production models in loess hilly and gully region of Shaanxi Province

Community Heterogeneity of Early Abandoned Arable Land in Loess Hilly Region of Northern Shaanxi Province

Structure Characteristics of Herbages Under Five Types of Artificial Forest Plantations in Loess Hilly Region

Establishment of Evaluation Index System of Agriculture and Ecology Security in the Loess Hilly Region

Evaluation Indicators System for Agro-ecological Economy in the Loess Hilly and Gully Region

Related Author

Li Shuo

Liu Jun

Lu Mengyan

Liang Yueqi

Han Xinhui

GUO Zhao-hui

MA Lai-huan

DU feng

Related Institution

College of Natural Resources and Environment， Northwest A&F University， Yangling

College of Agronomy （Agricultural Research Institute）， Northwest A&F University， Yangling

Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling

Baoji Vocational Technique College

College of Life Sciences,Northwest Sci-Tech University of Agriculture & Forestory,Yangling

⁰