QQ客服 官方微博 反馈留言

	Temporal and spatial variability of soil organic matter and total nitrogen in a typical oasis cropland ecosystem in arid region of Northwest China
	Liu, Wenjie1,2; Su, Yongzhong2; Yang, Rong2; Yang, Qiu2; Fan, Guiping2
刊名	ENVIRONMENTAL EARTH SCIENCES
	2011-12-01
卷号	64期号:8页码:2247-2257
关键词	Soil organic matter Total nitrogen Temporal variability Spatial variability Geostatistical analysis Linze oasis
ISSN号	1866-6280
DOI	10.1007/s12665-011-1053-5
通讯作者	Liu, Wenjie(liuwenjie523@gmail.com)
英文摘要	Soil degradation resulted from unreasonable land use has been a serious problem in the arid region of Northwest China. This paper seeks to understand the relationship between topsoil properties and farming practices for land management targeting at improving soil quality in this region. The temporal and spatial variation of soil organic matter (SOM), total nitrogen (STN) were analyzed with classical statistics and geostatistics methods in Linze County, Gansu Province, an typical oasis agricultural area in arid region of northwest China, as affected by farming practices using the data from 1982 to 2008. The results of classical statistics indicated that the average SOM and STN concentrations were 12.78 +/- A 4.38 g kg(-1) and 0.72 +/- A 0.21 g kg(-1) in 1982, 13.76 +/- A 4.02 g kg(-1) and 0.81 +/- A 0.20 g kg(-1) in 2008, respectively. The net carbon and nitrogen increased at an average rate of 0.104 Mg C ha(-1) year(-1) (1 Mg = 10(6)g) and 0.014 Mg N ha(-1) year(-1) in the past 26 years. Geostatistical analyses showed that the spatially related areas of SOM and STN were expanded by effect of farming practices. The spatial distributions of SOM and STN contents were influenced by regional soil parent materials. Temporal variation maps of SOM revealed a change trend was closely related to the amount of the application of organic manures. It was concluded that the applications of chemical fertilizers were effective for increasing of STN, and the continuous applications of chemical fertilizers combining with applications of organic manures (approximately 45 m(3) ha(-1)) every other year were helpful in accumulating soil organic carbon.
收录类别	SCI
WOS关键词	ALFALFA FORAGE LAND ; CARBON SEQUESTRATION ; ARGENTINEAN PAMPAS ; CROPPING SYSTEMS ; SIZE FRACTIONS ; WEST-AFRICA ; IOWA SOILS ; CONVERSION ; FERTILITY ; NUTRIENTS
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000297165900024
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556479
专题	寒区旱区环境与工程研究所
通讯作者	Liu, Wenjie
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Linze Inland River Basin Res Stn, Key Lab Ecohydrol Heihe River Basin, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wenjie,Su, Yongzhong,Yang, Rong,et al. Temporal and spatial variability of soil organic matter and total nitrogen in a typical oasis cropland ecosystem in arid region of Northwest China[J]. ENVIRONMENTAL EARTH SCIENCES,2011,64(8):2247-2257.
APA	Liu, Wenjie,Su, Yongzhong,Yang, Rong,Yang, Qiu,&Fan, Guiping.(2011).Temporal and spatial variability of soil organic matter and total nitrogen in a typical oasis cropland ecosystem in arid region of Northwest China.ENVIRONMENTAL EARTH SCIENCES,64(8),2247-2257.
MLA	Liu, Wenjie,et al."Temporal and spatial variability of soil organic matter and total nitrogen in a typical oasis cropland ecosystem in arid region of Northwest China".ENVIRONMENTAL EARTH SCIENCES 64.8(2011):2247-2257.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。