[1]Harper J L. Population Biology of Plants [M].London: Academic Press, 1977.289. [2]赵丽娅,赵哈林.我国沙漠化过程中的植被演替研究概述[J].中国沙漠,2002,20(增刊):7-14. [3]Syed Shahid Shaukat, Imran Ali Siddiqui. Spatial pattern analysis of seeds of an arable soil seed bank and its relationship with above-ground vegetation in an arid region[J].Journal of Arid Environments,2004,57:311-327. [4]Syed Shahid Shaukat, Imran Ali Siddiqui. Spatial pattern analysis of seeds of an arable soil seed bank and its relationship with above-ground vegetation in an arid region[J].Journal of Arid Environments,2004,57:311-327 [5]Town Shend J R G, Justice C O. Analysis of dynamics of African vegetation using the normalized difference vegetation index[J]. Int. J. of Remote Sensing,1986,12:1224-1242. [6]Belnap J, Harper K T, Warren S D. Surface disturbance of cryptobiotic soil crusts:Nitrogenase activity, chlorophyll content, and chlorophyll degradation[J]. Arid Soil Research and Rehabilitation,1994,8:1-8. [7]李新荣,贾玉奎,龙利群,等.干旱半干旱地区土壤微生物结皮的生态学意义及若干研究进展[J].中国沙漠,2001,21(1):4-11. [8]任珺,陶玲,刘新民.水分供应对沙漠植被土壤种子库中种子萌发的影响[J].植物学报,2002,44(1):124-126. [9]樊恒文,肖洪浪,段争虎,等.中国沙漠地区降尘特征与影响因素分析[J].中国沙漠,2002,22(6):559-565. [10]周海燕,张景光,龙利群,等.脆弱生态典型区域几种锦鸡儿属灌木的光合特征[J].中国沙漠,2001,21(3):227-231. [11]胡春香,刘永定,宋立荣,等.半荒漠藻结皮中藻类的种类组成和分布[J].应用生态学报,2000,11(1):61-65. [12]王世冬,白学良,雍世鹏. 沙坡头地区苔藓植物区系初步研究[J].中国沙漠,2001,21(3):244-249. [13]李守中,肖洪浪,宋耀选,等.腾格里沙漠人工固沙植被区生物土壤结皮对降水的拦截作用[J].中国沙漠,2002,22(6):612-616. [14]龙利群,李新荣.土壤微生物结皮对两种一年生植物幼苗存活和生长的影响[J].中国沙漠,2003,23(6):656-660. [15]李新荣,张景光,刘立超,等.我国干旱沙漠地区人工植被与环境演变过程中植物多样性的研究[J].植物生态学报,2000,24(3):257-261. [16]王刚,梁学功.沙坡头人工固沙区的种子库动态[J].植物学报,1995,37(3):231-237. [17]梁学功,王刚.沙坡头人工固沙区种子库动态及对植被演替方向的预测[A].中国科学院沙坡头沙漠试验研究站年报[C]. 兰州:甘肃科学技术出版社,1993.108-119. [18]龙利群,李新荣.微生物结皮对两种一年生植物种子萌发和出苗的影响[J].中国沙漠,2002,22(6):581-585. |