全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

黄土丘陵沟壑区植被类型对土壤质量的影响

, PP. 616-621

Keywords: 植被类型,土壤质量,环境因子,隶属度函数,黄土丘陵沟壑区

Full-Text   Cite this paper   Add to My Lib

Abstract:

土壤质量是支撑地球生物圈和进行可持续农业生产的最重要的环境因子之一。以黄土丘陵沟壑区的纸坊沟流域为研究区,选取不同植被类型和不同恢复年限的样地8块,测定土壤微生物性质(微生物生物量碳、微生物生物量氮、微生物生物量磷、微生物商)、土壤化学性质(土壤有机碳、全氮、碳氮比、碱解氮、销态氮、铵态氮和速效磷)、土壤酶活性(转化酶活性、碱性磷酸酶活性、脲酶)、土壤物理性质(黏粒、物理性黏粒、团聚体分形维数、团聚体平均质量直径、团聚体几何平均直径)等19个土壤属性。基于因子分析和隶属度函数,计算土壤质量指数(SQI),研究陕北黄土丘陵沟壑区植被类型对土壤质量的影响。结果表明土壤质量指数(SQI)变化介于0.09~0.73之间,其中,农地土壤质量指数最小,SQI为0.09,31年刺槐地SQI最高,其值为0.73。同一植被类型下,SQI随植被恢复年限的增加而增加;相同恢复年限下,刺槐林地的SQI大于油松林。表明植被重建和农地撂荒会提高土壤质量,而粗放的农业耕作会降低土壤质量。

References

[1]  Fu B J,Chen L d,Ma K M,et al.The relationships between land use and soil conditions in the hilly area of the loess plateau in northern Shaanxi,China[J].Catena,2000,39:69-78.
[2]  Hussain I,Olson K R,Wander M M,et al.Adaptation of soil quality indices and application to three tillage systems in southern Illinois[J].Soil & Tillage Research,1999,50:237-249.
[3]  Vitousek P M,Matson P A.Mechanism of nitrogen retention in forest ecosystem[J].Science,1984,225:51-52.
[4]  Caravaca F,Lax A,Albaladejo J.Aggregate stability and carbon characteristics of particle-size fractions in cultivated and forested soils of semiarid Spain[J].Soil & Tillage Research,2004,78:83-90.
[5]  Kennedy A C,Smith K L.Microbial diversity and sustainability of agricultural soils[J].Plant Soil,1995,23(2):69-79.
[6]  Gros R,Monrozier L J,Bartoli F,et al.Relationships between soil physico-chemical properties and microbial activity along a restoration chronosequence of alpine grasslands following ski run construction[J].Applied Soil Ecology,2004,27:7-22.
[7]  Lammar R T,Dietrich D M.Insitu depletion of pentachlorophenol from contaminated soil by Phanerochaete spp.[J].Applied and Environmental Microbiology,1990,56(10):3 093-3 100.
[8]  Wang J,Fu B J,Qiu Y,et al.Soil nutrients in relation to land use and landscape position in the semi-arid small catchment on the loess plateau in China[J].Journal of Arid Environments,2001,48:537-550.
[9]  Zhang Y M,Zhou G Y,Wu N,et al.Soil enzyme activity changes in different aged spruce forest of the east Qinghai Tibetan plateau[J].Pedosphere,2004,14:305-312.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133