Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1365-2486.2011.02498.x |
Directional climate change and potential reversal of desertification in arid and semiarid ecosystems | |
Peters, Debra P. C.1,2; Yao, Jin1; Sala, Osvaldo E.1,3; Anderson, John P.1 | |
通讯作者 | Peters, Debra P. C. |
来源期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
出版年 | 2012 |
卷号 | 18期号:1页码:151-163 |
英文摘要 | Our objective was to determine if long-term increases in precipitation can maintain grasslands susceptible to desertification, and initiate a reversal of historic regime shifts on desertified shrublands. Perennial grass production and species richness in a multi-year wet period were hypothesized to be greater than expected based on precipitation in a sequence of dry years. These responses were expected to differ for grasslands and shrublands with different dominant species and topo-edaphic properties. Long-term trends in desertification were documented using vegetation maps beginning in 1858, 1915, 1928, and 1998). These trends were compared with herbaceous and woody species responses to a sequence of dry (19942003) and wet years (20042008) for two grassland (uplands, playas) and three desertified shrubland types (honey mesquite, creosotebush, tarbush) in the Chihuahuan Desert. Analyses showed that both types of grasslands decreased in spatial extent since 1858 whereas areas dominated by mesquite or creosotebush increased. Production of upland grasslands in the wet period was greater than expected based on responses during the dry period whereas the relationships between species richness and precipitation was the same for both periods. Precipitation was not important to responses in playa grasslands in either period. For all ecosystem types, the production response in wet years primarily was an increase in herbaceous plants, and the most pronounced responses occurred on sandy sites (upland grasslands, mesquite shrubland). Results suggest that multiple wet years are needed to initiate a sequence of grass establishment and survival processes that can maintain upland grasslands without management inputs and lead to a state change reversal in desertified shrublands. Restoration strategies need to take advantage of opportunities provided by future climates while recognizing the importance of ecosystem type. |
英文关键词 | extreme events grasslands regime shift shrublands spatial context wet-dry climatic periods |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000298598900014 |
WOS关键词 | NORTHERN CHIHUAHUAN DESERT ; NET PRIMARY PRODUCTION ; RAIN USE EFFICIENCY ; UNITED-STATES ; GLOBAL DESERTIFICATION ; GRASSLAND ECOSYSTEM ; AMERICAN SOUTHWEST ; VEGETATION CHANGES ; PATAGONIAN STEPPE ; NEW-MEXICO |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
来源机构 | Arizona State University ; New Mexico State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/172646 |
作者单位 | 1.New Mexico State Univ, Jornada Basin Long Term Ecol Res Program, Las Cruces, NM 88003 USA; 2.ARS, USDA, Las Cruces, NM 88003 USA; 3.Arizona State Univ, Sch Life Sci & Sch Sustainabil, Tempe, AZ 85287 USA |
推荐引用方式 GB/T 7714 | Peters, Debra P. C.,Yao, Jin,Sala, Osvaldo E.,et al. Directional climate change and potential reversal of desertification in arid and semiarid ecosystems[J]. Arizona State University, New Mexico State University,2012,18(1):151-163. |
APA | Peters, Debra P. C.,Yao, Jin,Sala, Osvaldo E.,&Anderson, John P..(2012).Directional climate change and potential reversal of desertification in arid and semiarid ecosystems.GLOBAL CHANGE BIOLOGY,18(1),151-163. |
MLA | Peters, Debra P. C.,et al."Directional climate change and potential reversal of desertification in arid and semiarid ecosystems".GLOBAL CHANGE BIOLOGY 18.1(2012):151-163. |
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