Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/jpln.201100327 |
Short-term degradation of semiarid grasslandsuresults from a controlled-grazing experiment in Northern China | |
Wiesmeier, Martin1; Kreyling, Olivia1; Steffens, Markus1; Schoenbach, Philipp2; Wan, Hongwei2; Gierus, Martin2; Taube, Friedhelm2; Koelbl, Angelika1; Koegel-Knabner, Ingrid1 | |
通讯作者 | Wiesmeier, Martin |
来源期刊 | JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
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ISSN | 1436-8730 |
EISSN | 1522-2624 |
出版年 | 2012 |
卷号 | 175期号:3页码:434-442 |
英文摘要 | The assessment of grassland degradation due to overgrazing is a global challenge in semiarid environments. In particular, investigations of beginning steppe degradation after a change or intensification of the land use are needed in order to detect and adjust detrimental land-use management rapidly and thus prevent severe damages in these sensitive ecosystems. A controlled-grazing experiment was established in Inner Mongolia (China) in 2005 that included ungrazed (UG) and heavily grazed plots with grazing intensities of 4.5 (HG4.5) and 7.5 (HG7.5) sheep per hectare. Several soil and vegetation parameters were investigated at all sites before the start of the experiment. Topsoil samples were analyzed for soil organic C (SOC), total N (Ntot), total S (Stot), and bulk density (BD). As vegetation parameters, aboveground net primary productivity (ANPP), tiller density (TD), and leaf-area index (LAI) were determined. After 3 y of the grazing experiment, BD increased and SOC, Ntot, Stot, ANPP, and LAI significantly decreased with increasing grazing intensity. These sensitive parameters can be regarded as early-warning indicators for degradation of semiarid grasslands. Vegetation parameters were, however, more sensitive not only to grazing but also to temporal variation of precipitation between 2006 and 2008. Contrary, soil parameters were primarily affected by grazing and resistant against climatic variations. The assessment of starting conditions in the study area and the application of defined grazing intensities is essential for the investigation of short-term degradation in semiarid environments. |
英文关键词 | steppe desertification soil organic carbon (SOC) overgrazing Inner Mongolia |
类型 | Article |
语种 | 英语 |
国家 | Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000304598900012 |
WOS关键词 | XILIN RIVER-BASIN ; DEGRADED SANDY GRASSLAND ; NET PRIMARY PRODUCTIVITY ; INNER-MONGOLIA ; SOIL PROPERTIES ; ORGANIC-MATTER ; DESERT STEPPE ; SPECIES-DIVERSITY ; LEYMUS-CHINENSIS ; STIPA-GRANDIS |
WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
WOS研究方向 | Agriculture ; Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/173807 |
作者单位 | 1.Tech Univ Munich, Lehrstuhl Bodenkunde, Dept Onkol & Okosyst Management, Wissensch Zentrum Weihenstephan Ernahrung Landnut, D-85350 Freising Weihenstephan, Germany; 2.Univ Kiel, Inst Crop Sci & Plant Breeding Grass & Forage Sci, D-24118 Kiel, Germany |
推荐引用方式 GB/T 7714 | Wiesmeier, Martin,Kreyling, Olivia,Steffens, Markus,et al. Short-term degradation of semiarid grasslandsuresults from a controlled-grazing experiment in Northern China[J],2012,175(3):434-442. |
APA | Wiesmeier, Martin.,Kreyling, Olivia.,Steffens, Markus.,Schoenbach, Philipp.,Wan, Hongwei.,...&Koegel-Knabner, Ingrid.(2012).Short-term degradation of semiarid grasslandsuresults from a controlled-grazing experiment in Northern China.JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,175(3),434-442. |
MLA | Wiesmeier, Martin,et al."Short-term degradation of semiarid grasslandsuresults from a controlled-grazing experiment in Northern China".JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 175.3(2012):434-442. |
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