[1] Kang L, Han XG, Zhang ZB, et al. Grassland ecosystems in China: Review of current knowledge and research advancement. Philosophical Transactions of the Royal Society Series B: Biological Sciences, 2007, 362: 997-1008 [2] Gang CC, Zhou W, Chen YZ, et al. Quantitative assessment of the contributions of climate change and human activities on global grassland degradation. Environmental Earth Sciences, 2014, 72: 4273-4282 [3] Li XL, Yuan QH, Wan LQ, et al. Perspectives livestock production systems in China. The Rangeland Journal, 2008, 30: 211-220 [4] Bai YF, Wu JG, Clark CM, et al. Tradeoffs and thre-sholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: Evidence from Inner Mongolia grasslands. Global Change Biology, 2010, 16: 358-372 [5] Zhao J, Xun R, He X, et al. Size spectra of soil nematode assemblages under different land use types. Soil Biology and Biochemistry, 2015, 85: 130-136 [6] Ingham RE, Trofymow JA, Ingham ER, et al. Interactions of bacteria, fungi, and their nematode grazers: Effects on nutrient cycling and plant growth. Ecological Monographs, 1985, 55: 119-140 [7] Yeates GW. Nematodes as soil indicators: Functional and biodiversity aspects. Biology and Fertility of Soils, 2003, 37: 199-210 [8] Yeates GW, Bongers T, De Goede RGM, et al. Feeding habits in soil nematode families and genera: An outline for soil ecologists. Journal of Nematology, 1993, 25: 315-331 [9] Liang WJ, Lou YL, Li Q, et al. Nematode faunal response to long-term application of nitrogen fertilizer and organic manure in Northeast China. Soil Biology and Biochemistry, 2009, 41: 883-890 [10] Li Q, Jiang Y, Liang WJ, et al. Long-term effect of fertility management on the soil nematode community in vegetable production under greenhouse conditions. Applied Soil Ecology, 2010, 46: 111-118 [11] Wei CZ, Zheng HF, Li Q, et al. Nitrogen addition regulates soil nematode community composition through ammonium suppression. PLoS One, 2012, 7(8): e43384 [12] Chen X, Daniell TJ, Neilson R, et al. Microbial and microfaunal communities in phosphorus limited, grazed grassland change composition but maintain homeostatic nutrient stoichiometry. Soil Biology and Biochemistry, 2014, 75: 94-101 [13] Sharpley AN, Mcdowell RW, Weld JL, et al. Assessing site vulnerability to phosphorus loss in an agricultural watershed. Journal of Environmental Quality, 2001, 30: 2026-2036 [14] Hou F-J (侯扶江), Nan Z-B (南志标), Xiao J-Y (肖金玉), et al. Characteristics of vegetation, soil, and their coupling of degraded grasslands. Chinese Journal of Applied Ecology (应用生态学报), 2002, 13(8): 915-922 (in Chinese) [15] Mao X-F (毛小方), Li H-X (李辉信), Chen X-Y (陈小云), et al. Extraction efficiency of soil nematodes by different methods. Chinese Journal of Ecology (生态学杂志), 2004, 23(3): 149-151 (in Chinese) [16] Yin W-Y (尹文英), Hu S-H (胡圣豪), Shen Y-F (沈韫芬), et al. Pictorical Keys to Soil Animals of China. Beijing: Science Press, 1998 (in Chinese) [17] Zhang X-K (张晓珂), Liang W-J (梁文举), Li Q (李 琪), et al. Forest Soil Nematodes in Changbai Mountain. Beijing: China Agricultural Press, 2013 (in Chinese) [18] Shannon CE, Weaver W, Blahut RE, et al. The Mathematical Theory of Communication. Chicago, IL, USA: University of Illinois Press, 1949 [19] Pielou EC. The measurement of diversity in different types of biological collections. Journal of Theoretical Biology, 1966, 13: 131-144 [20] Bongers T. The maturity index: An ecological measure of environmental disturbance based on nematode species composition. Oecologia, 1990, 83: 14-19 [21] Li Y-J (李玉娟), Wu J-H (吴纪华), Chen H-L (陈慧丽), et al. Nematodes as bioindicator of soil health: Methods and applications. Chinese Journal of Applied Ecology (应用生态学报), 2005, 16(8): 1541-1546 (in Chinese) [22] Bongers T, Bongers M. Functional diversity of nematodes. Applied Soil Ecology, 1998, 10: 239-251 [23] Murray PJ, Cook R, Currie AF, et al. Interactions between fertilizer addition, plants and the soil environment: Implications for soil faunal structure and diversity. Applied Soil Ecology, 2006, 33: 200-207 [24] Sarathchandra SU, Ghani AA, Yeates GW, et al. Effect of nitrogen and phosphate fertilisers on microbial and nematode diversity in pasture soils. Soil Biology and Biochemistry, 2001, 33: 953-964 [25] Hu C, Qi Y. Effect of compost and chemical fertilizer on soil nematode community in a Chinese maize field. European Journal of Soil Biology, 2010, 46: 230-236 [26] Persson H. Fine-root dynamics in a Scots pine stand with and without near-optimum nutrient and water regimes (Pinus sylvestris). Acta Phytogeographica Suecica, 1980: 101-110 [27] Oka Y, Shapira N, Fine P. Control of root-knot nematodes in organic farming systems by organic amendments and soil solarization. Crop Protection, 2007, 26: 1556-1565 [28] Wang CH, Zhu F, Zhao X, et al. The effects of N and P additions on microbial N transformations and biomass on saline-alkaline grassland of Loess Plateau of Northern China. Geoderma, 2014, 213: 419-425 [29] Chen X, Daniell TJ, Neilson R, et al. Microbial and microfaunal communities in phosphorus limited, grazed grassland change composition but maintain homeostatic nutrient stoichiometry. Soil Biology and Biochemistry, 2014, 75: 94-101 [30] Biederbeck VO, Campbell CA, Zentner RP, et al. Effect of crop rotation and fertilization on some biological properties of a loam in southwestern Saskatchewan. Canadian Journal of Soil Science, 1984, 64: 355-367 [31] Cesarz S, Ciobanu M, Wright AJ, et al. Plant species richness sustains higher trophic levels of soil nematode communities after consecutive environmental perturbations. Oecologia, 2017, 184: 715-728 [32] Veen GF, Olff H, Duyts H, et al. Vertebrate herbivores influence soil nematodes by modifying plant communities. Ecology, 2010, 91: 828-835 [33] Pan Q-M (潘庆民), Xue J-G (薛建国), Tao J (陶 金), et al. Current status of grassland degradation and measures for grassland restoration in northern China. Chinese Science Bulletin (科学通报), 2018, 63(17): 1642-1650 (in Chinese) |