干旱区生态环境知识资源中心(Arid): Small-Scale Spatial Variability of Soil Nutrients and Vegetation Properties in Semi-Arid Northern China

Arid

DOI	10.1016/S1002-0160(06)60114-8
	Small-Scale Spatial Variability of Soil Nutrients and Vegetation Properties in Semi-Arid Northern China
	Chen Fusheng; Zeng Dehui; He Xingyuan
来源期刊	Pedosphere
ISSN	1002-0160
出版年	2006
卷号	16 期号:6 页码:778-787
英文摘要	A field experiment was conducted at Kezuohouqi County, Inner Mongolia Autonomous Region of China, which was located on the southeastern edge of the Horqin Sandy Land, to study the spatial variability of soil nutrients for a smallscale, nutrient-poor, sandy site in a semi-arid region of northern China; to investigate whether or not there were "islands of fertility" at the experimental site; and to determine the key nutrient elements that sustained ecosystem stability. Results obtained from geostatistical analysis indicated that the spatial distribution pattern of soil total nitrogen (STN) was far different from those of soil organic matter (SOM), total phosphorus (STP), and total potassium (STK). Compared to SOM, STP, and STK, STN had a lower structural heterogeneity ratio and a longer range, while other elements were all similar. In addition, STN had an isotropic spatial structure, whereas the others had an anisotropic spatial structure.The spatial structure patterns of herbage species, cover, and height also differed, indicating that spatial variability was subjected to different ecological factors. Differences in the spatial variability patterns among soil nutrients and vegetation properties showed that soil nutrients for a small-scale were not the primary limiting factors that influenced herbage spatial distribution patterns. Incorporating spatial distribution patterns of tree species, namely, Pinus sylvestris var. mongolica Litv. and shrub Lespedeza bicolor Turcz. in a research plot and using fractal dimension, SOM, STP, and STK were shown to contribute to the "islands of fertility" phenomenon, however STN was not, possibly meaning that nitrogen was a key limiting element. Therefore, during restoration of similar ecosystems more attention should be given to soil nitrogen.
英文关键词	Pinus sylvestris var. mongolica Litv semi-arid region soil nutrients spatial variability species richness
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:2658960
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334929
作者单位	Chen Fusheng, Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China.; Zeng Dehui, Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China.; He Xingyuan, Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China.
推荐引用方式 GB/T 7714	Chen Fusheng,Zeng Dehui,He Xingyuan. Small-Scale Spatial Variability of Soil Nutrients and Vegetation Properties in Semi-Arid Northern China[J],2006,16(6):778-787.
APA	Chen Fusheng,Zeng Dehui,&He Xingyuan.(2006).Small-Scale Spatial Variability of Soil Nutrients and Vegetation Properties in Semi-Arid Northern China.Pedosphere,16(6),778-787.
MLA	Chen Fusheng,et al."Small-Scale Spatial Variability of Soil Nutrients and Vegetation Properties in Semi-Arid Northern China".Pedosphere 16.6(2006):778-787.