文献类型：期刊文献

英文题名：Effects of vegetation restoration on soil nutrients, plant diversity, and its spatiotemporal heterogeneity in adesert-oasisecotone

作者：Wu, Chunyan[1,2,3] Deng, Lei[4,5] Huang, Chunbo[6] Chen, Yongfu[3] Peng, Changhui[4]

第一作者：吴春燕

通信作者：Chen, YF[1];Peng, CH[2]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat State Forestry A, Beijing, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China;[4]Univ Quebec Montreal, Inst Environm Sci, Dept Biol Sci, Montreal, PQ, Canada;[5]Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China;[6]Huazhong Agr Univ, Coll Hort & Forestry Sci, Hubei Engn Technol Res Ctr Forestry Informat, Wuhan, PR, Peoples R China

年份：2021

卷号：32

期号：2

起止页码：670-683

外文期刊名：LAND DEGRADATION & DEVELOPMENT

收录：;EI(收录号：20204009259019);Scopus(收录号：2-s2.0-85091606322);WOS:【SCI-EXPANDED(收录号:WOS:000573411800001)】；

基金：the Central Non-profit Research Institution of CAF(CAFBB2017ZB004), Grant/Award Number: CAFBB2017ZB004

语种：英文

外文关键词：Chronosequence; nitrogen; plant diversity; spatial heterogeneity; vegetation restoration

摘要：Vegetation restoration has been proposed as an effective measure for rehabilitating degraded land and slowing desertification in arid regions. However, the spatial variation in soil quality and plant diversity following vegetation restoration remains unclear. This study was designed to explore soil nutrient dynamics and how soil nutrients affect plant diversity and spatial heterogeneity after shrub restoration. We assessed the effect ofHaloxylon ammodendron(C.A.Mey.) Bunge (which has been planted over 30 years) on the soil nutrients and plant diversity in a desert-oasis ecotone in Minqin County, Gansu, China, using geostatistics, beta diversity and rarefaction analyses, and Hill number extrapolation. Soil nutrients, including soil organic matter, total nitrogen, and alkali nitrogen, increased significantly afterH. ammodendronplanting. Species richness gradually increased from 1-5 years to 10-20 years afterH. ammodendronwas planted but then decreased at 20-30 years. The largest differences in plant composition were observed at 15 and 20 years. Plant diversity increased in the whole 30 years after shrub planting, increasing in the first 25 years and then decreasing at 26-30 year stage. The maximum coefficient of determination for the spatial heterogeneity model fit was 0.84 (25 years). The spatial heterogeneity in vegetation decreased with increasing soil available K content at 1-10 years. Our results suggest that planting shrubs can improve soil conditions and plant species diversity in desert-oasis ecotones and soil nutrients have a strong influence on plant diversity patterns and spatial heterogeneity following vegetation restoration.