Soil C and N dynamics during desertification of grassland in Northern China

Abstract

Abstract: This paper investigated the aboveground vegetations and the soil texture and total C and N at 75 sites of Duolun County in Xilinguole League of Inner Mongolia.The results showed that different types of vegetation community could be used to describe different stages of desertification process.During desertification,the community types were changed in the series of Leymus chinensis+Cleistogenes squarrosa → Artemisia frigida → Artemisia intramongolia → Corispermum staunyonii,Chenopodium bryoniaefolium → drift sand,and a regular change of soil clay and total C and N contents could also be found.The soil C/N ratio was increased with different stages of grassland desertification,which could be expressed in the series of 8.11→13.96→12.36→28.17.

Key words: Grassland, Desertification, Soil C and N degradation

CLC Number:

LIU Yingru, YANG Chi, ZHU Zhimei, LIU Meiling . Soil C and N dynamics during desertification of grassland in Northern China[J]. Chinese Journal of Applied Ecology, 2004, (9): 1604-1606.

References

[1] Baoyin T-G T(宝音陶格涛),Liu D(刘丹).2001.The changing of ploughlang and analysis of problem of Duolun County on agriculture-animal husbandry ecotone. Acta Inner Mongolia Univ ( Nat Sci)(内蒙古大学学报·自然科学版),32(6):657～660(in Chinese)
[2] Chang X-L(常学礼),Wu J-G邬建国).1998.Spatial analysis of pattern of sandy landscapes in Kerqin, Inner Mongolia. Acta Ecol Sin(生态学报),18(3):225～232(in Chinese)
[3] Chang X-L(常学礼),Zhang D-G(张德干),Yang C(杨持).1999. Fractal structure character of agri-grazing -ecotone in Kerqin region.Acta Inner Mongolia Univ(Nat Sci)(内蒙古大学学报·目然科学版),30(4):513～517(in Chinese)
[4] Chen Z-Z(陈佐忠),Wang S-P(汪诗平).2000.Typical Steppe Ecosystem in China. Beijing: Science Press. 160 ～ 169(in Chinese)
[5] Guan W-B(关文彬),Zeng D-H(曾德慧),Fan Z-P(范志平).2001. Ecological studies on relationship between the process of desertification and vegetation dynamics in the west of northeast China:Vegetation ordination.Chin J Appl Ecol(应用生态学报),12(5):687～691(in Chinese)
[6] Guan W-B(关文彬),Zeng D-H(曾德慧),Jiang F-Q(姜凤岐).2000. Ecological study on relationship between desertification process and vegetation dynamics in west of northeast China: Vegetation classification.Chin J Appl Ecol(应用生态学报),11(6):907～911(in Chinese)
[7] Li Y-H(李永宏).1994.Research on the grazing degradation model of the main steppe rangelands in Inner Mongolia and some considerations for the establishment of a computerized rangeland monitoring system.Acta Phytoecol Sin(植物生态学报),18(1):68～79(in Chinese)
[8] Liu Y-H(刘毅华),Dong Y-H(董玉华).1999.Tentative study on desertification and sustainable development in China. J Desert Res (中国沙漠),19(1):17～22(in Chinese)
[9] Wang T(王涛).2001.Research and practice of chinese desrtification control going to World.JDeser Res(中国沙漠),21(1):1～3(in Chinese)
[10] Chang X-L(常学礼),Wu J-G邬建国).1997.Study of species diversity of desertification process in Kerqin Sandy Land. Chin J Appl Ecol(应用生态学报),8(2):151～156(in Chinese)
[11] Zhou H-Y(周海燕).2000.Physioecological characteristics of fou dominant plant species in Keerqin Sandy Land. Chin J Appl Ecol (应用生态学报),11(4):587～590(in Chinese)
[12] Wang T(王涛).2000.Research on desertification and control to its calamity in the large-scale developement of the Wester China. J Desert Res(中国沙漠),20(4):345～348(in Chinese)
[13] Wang T(王涛),Zhao H-L(赵哈林),Xiao H-L(肖洪浪).1999.Edvances in desertification research of China.J Desert Res(中国沙漠),19(4):299～311(in Chinese)
[14] Wang W(王炜),Liu Z-L(刘钟龄),Hao D-Y(郝敦元).1996.Research on the restoring succession of the degenerated grassland in Inner Mongolia Ⅱ. Analysis of the restoring processes. Acta Phytoecol Sin(植物生态学报),20(2):460～471(in Chinese)
[15] Zou S-Y(邹受益),Zhang J-L(张景龙),Feng Z-F(冯政夫).2001. Desertified land analysis in Keerqin Sandy Land. J Desert Res (中国沙漠),21(1):76～78(in Chinese)