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草地学报  2015 

荒漠草原沙漠化对土壤养分与植被根冠比的影响

DOI: 10.11733/j.issn.1007-0435.2015.03.005, PP. 463-468

Keywords: 荒漠草原,沙漠化,土壤养分,根冠比

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Abstract:

以空间代替时间的方法,通过对宁夏中北部荒漠草原不同沙漠化阶段草地土壤养分与植被生产力的研究,探讨土壤养分和植被根冠比对草地沙漠化的响应特征,以期为干旱与半干旱地区荒漠草原的生态恢复与重建提供科学依据。结果表明随着荒漠草原沙漠化程度的增加,植被地上、地下生物量呈现减小的趋势,但是轻度沙漠化阶段植被地上、地下生物量均大于潜在沙漠化阶段。植物根冠比随着草地沙漠化程度加剧而减小,而重度沙漠化阶段植物根冠比比中度沙漠化阶段增加了36%;随着草地沙漠化程度的加剧,土壤有机碳、全磷、全氮、速效钾和速效氮含量均呈降低趋势;在草地沙漠化过程中,土壤养分的积累减弱导致土壤肥力降低,草地生产力下降。

References

[1]  Zhou R L, Li Y Q, Zhao H L, et al. Desertification effects on C and N content of sandy soils under grassland in Horqin, northern China [J]. Geoderma,2008,145(3/4):370-375
[2]  刘新平,张铜会,赵哈林,等. 干旱半干旱区沙漠化土地水分动态研究进展[J]. 水土保持研究,2005,12(1):63-68
[3]  赵哈林,周瑞莲,苏永中,等. 我国北方半干旱地区土壤的沙漠化演变过程与机制[J]. 水土保持学报,2007,21(3):1-5
[4]  Schlesinger W H, Abrahams A D, Parsons A J, et al. Nutrient losses in runoff from grassland and shrubland habitats in Southern New Mexico: I. rainfall simulation experiments [J]. Biogeochemistry,1999,45(1):21-34
[5]  Carreira J A, Niell F X. Mobilization of nutrients by fire in a semiarid gorse-scrubland ecosystem of southern Spain [J]. Arid Soil Research and Rehabilitation,1995,9(1):73-89
[6]  安慧,李国旗. 放牧对荒漠草原植物生物量及土壤养分的影响[J]. 植物营养与肥料学报,2013,19(3):705-712
[7]  陈玉富,董鸣. 毛乌素沙地景观的植被与土壤特征空间格局及其相关分析[J]. 植物生态学报,2001,25(3):265-269
[8]  Zuo X A, Zhao X Y, Zhao H L, et al. Spatial heterogeneity of soil properties and vegetation-soil relationships following vegetation restoration of mobile dunes in Horqin Sandy Land, Northern China [J]. Plant and Soil,2009,318(1/2):153-167
[9]  Zhou Z Y, Sun O J X, Luo Z K, et al. Variation in small scale spatial heterogeneity of soil properties and vegetation with different land use in semiarid grassland ecosystem [J]. Plant and Soil,2008,310(1/2):103-112
[10]  丁国栋. 区域荒漠化评价中植被的指示性及盖度分级标准研究:以毛乌素沙区为例[J]. 水土保持学报,2004,18(1):158-160
[11]  中国科学院南京土壤研究所. 土壤理化分析[M]. 上海:上海科学技术出版社,1978
[12]  苏永中,赵哈林,张铜会,等. 科尔沁沙地旱作农田土壤退化的过程和特征[J]. 水土保持学报,2002,16(1):25-28
[13]  Dong Z B, Wang X M, Liu L Y. Wind erosion in arid and semiarid China an overview[J]. Journal of Soil Water Conservation,2000,55(4):439-444
[14]  Lowery B, Swan J, Schumacher T, et al. Physical properties of selected soils by erosion class[J]. Journal of Soil Water Conservation,1995,50(3):306-311
[15]  苏永中,赵哈林. 农田沙漠化过程中土壤有机碳和氮的衰减及其机理研究[J]. 中国农业科学,2003,36(8):928-934
[16]  Lopez M V. Wind erosion in agricultural soils: an example of limited supply of particles available for erosion [J]. Catena,1998,33(1):17-28
[17]  Schlesinger W H, Pilmanis A M, Breemen N V. Plant-soil interactions in deserts [J]. Biogeochemistry,1998,42(1/2):169-187
[18]  王玉辉,周广胜. 内蒙古羊草草原植物群落地上初级生产力时间动态对降水变化的响应[J]. 生态学报,2004,24(6):1140-1145
[19]  Watson M A, Geber M A, Jones C S. Ontogenetic contingency and the expression of plant plasticity [J]. Trend in Evolution and Ecology,1995,10(12):474-475
[20]  Geber M A, Waston M A, De Kroon H. Development and resource allocation in perennial plants: the significance of organ preformation [M]//Bazzaz F A, Grace J. Plant Resource Allocation. New York:Academic Press,1997
[21]  Grainger A, Smith S M, Squires V R, et al. Desertification and climate change: the case for greater convergence [J]. Mitigation and Adaptation Strategies for Global Change,2000,5(4):361-377
[22]  朴起亨,丁国栋,吴斌,等. 呼伦贝尔沙地植被演替规律研究[J]. 水土保持学报,2008,22(6):180-186
[23]  Zhou R L, Li Y Q, Zhao H L, et al. Desertification effects on C and N content of sandy soils under grassland in Horqin, northern China [J]. Geoderma,2008,145(3/4):370-375
[24]  Wang Y H, Zhou G S. Responses of temporal dynamics of aboveground net primary productivity of Leymus chinensis community to precipitation fluctuation in Inner Mongolia [J]. Acta Ecologica Sinica,2004,24(6):1140-1145
[25]  Ding G D. Study on indicative feature and cover classification of vegetation in regional desertification assessment: Taking Mu Us sandland as an example [J]. Journal of Soil and Water Conservation,2004,18(1):158-160,188
[26]  Schmid B. Some ecological and evolutionary consequences of modular organization and clonal growth in plants [J]. Evolutionary Trends in Plants,1990,4(1):25-34
[27]  De K H, Hutchings M J. Morphological plasticity in clonal plants:the foraging concept reconsidered [J]. Journal of Ecology,1995,83(1):143-152
[28]  Smith N S. Variation in response to defoliation between population of Bouteloua curti pendula var. caespitosa with different livestock grazing histories [J]. American Journal of Botany,1998,85(9):1266-1272
[29]  Geiger D R, Servaites J C. Carbon allocation and response to stress [M]//Mooney H A,Winner W E,Pell E J,eds. Response of plants to multiple stresses. CA:Academic Press,San Diego,1991:103-127
[30]  Mooney H A, Winner W E. Partitioning response of plants to stress [M]//Mooney H A, W inner W E, Pell E J, eds. Response of plants to multiple stresses. CA:Academic Press,San Diego,1991:129-141
[31]  李旭东,张春平,傅华. 黄土高原典型草原草地根冠比的季节动态及其影响因素[J]. 草业学报,2012,21(4):307-312
[32]  Bassirirad H. Kinetics of nutrient uptake by roots: Responses to global change [J]. New Phytologist,2000,147(1):155-169
[33]  Garkoti S C, Singh S P. Variation in net primary productivity and biomass of forests in the high mountains of Central Himalay [J]. Journal of Vegetation Science,1995,6(1):23-28
[34]  贺海波,李彦. 干旱、盐胁迫条件下两种盐生植物生物量分配对策的研究[J]. 干旱区研究,2008,25(2):242-247

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