植物地境及物种地境稳定层

徐恒力; 孙自永; 马瑞

植物地境及物种地境稳定层

中国地质大学环境学院, 湖北武汉 430074

基金项目:

国土资源部2000年科技专项计划《西北地区水资源与可持续利用》项目 200010302

详细信息

作者简介:
徐恒力(1945-), 男, 教授, 主要从事水文地质、环境地质和生态地质专业的教学和科研工作.E-mail: xuhengli@sohu.com

中图分类号: P641.69
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出版历程
- 收稿日期: 2003-08-22
- 刊出日期: 2004-03-25

Plant Below-Ground Habitat and Stable Layer of Plant Species in Habitat

School of Environmental Studies, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 植物地境是其生境的重要组成部分.地境结构的系统分析应作为探索植物与其地境生态关系的重要手段之一.植物地境具有鲜明的耗散结构特征, 内部的宏观稳定性和层次性是适应外界环境的自组织结果, 并与植物根群的“层片”结构相契合.每一“层片”代表一个特定的地下小环境.若地境具有多个“层片”, 说明该地境拥有可被多种植物利用的多样小环境.根群作为根系的主功能区, 是联系植物与地境的纽带.与植物的根系相比, 根群的“层片”现象更清晰.通过根群的“层片”, 不同植物实现资源分割, 避免过激竞争, 能够长期共存.基于地境耗散结构特征分析和各物种根群所处深度范围的统计结果, 首次建立了物种地境稳定层的概念.某一物种根群所处的位置即为该物种的地境稳定层.物种地境稳定层可作为地境生态功能分层的基本单位.较之地境全剖面各指标的平均值, 地境稳定层内理化指标组态更为真实地反映了植物生存的地下环境, 可用以确定物种的生存域; 不同植物的生理和生活习性是对其稳定层内指标组态量值及动态变化规律的一种响应; 地境所能提供的稳定层的多寡及组态对地表植物群落的结构具有一定的控制作用; 地境稳定层的消失和产生, 可导致对应物种的消亡和入侵, 造成植物群落的演替.
- 植物地境 /
- 耗散结构 /
- 层片 /
- 根群 /
- 物种地境稳定层
Abstract: Plant below-ground habitat is an important part of the plant habitat, and the systemic analysis of its structure should be emphasized in seeking for the regulations of the ecological relationship between plant and its habitat. Remarkable characteristics of the dissipative structure are discovered in the plant below-ground habitat, made up of many layers displaying macroscopic stability as a result of the self-organization. This layered structure of the plant below-ground habitat is well consistent with the synusium of the root masses. This synusium allows us to predict that each layer means one special below-ground little living environment for the root mass of the plant species, and if the below-ground habitat is made up of many such layers, it would provide various little below-ground living environments for different plant species. In the analysis, the root mass of the plant, defined as the part of the roots performing the major function of absorbing soil resources, is the linchpin between the plant and its below-ground habitat. Compared with the root system, the synusium of the root masses (among) different plants is clearer, by which, different plants can partition the resources in different deep layers to avoid intensive competition and coexist for long term. Based on the analysis of the dissipative structure of plant below-ground habitat and statistical results about the depth of the species root mass, the concept "stable layer of plant species in below-ground habitat" (SLPSBH) is built, which can be determined by the position of the root mass and used as the basic unit for layering the plant below-ground habitat in view of its ecological function. With the concept, we may predict that (1) the configuration of physical and chemical indexes in the stable layer can characterize the below-ground living environment of the plant more truly than the averages of the indexes in whole soil profile, (2) some life habits and physiological characteristics of the plant species is built on long-term adapt to the value and dynamic of the configuration in its stable layer, (3) it may be how many SLPSBH can be provided in below-ground habitat for different plant species that determines the structural features of the plant community, and (4) the plant species which SLPSBH exists no longer would disappear from the community, while the new comers may invade for they can find their SLPSBH, leading to the succession of the plant community.
- plant below-ground habitat /
- dissipative structure /
- synusium /
- root mass /
- stable layer of plant species in below-ground habitat

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参考文献(42)

Bai, Y.F., Xu, Z.X., Li, D.X., 2002. On the small scale spatial heterogeneity of soil moisture, carbon and nitrogen in Stipa communities of the Inner Mongolia plateau. Acta Ecologica Sinica, 22(8): 1215-1223(in Chinese with English abstract).
Bengough, A.G., Croser, C., Pritchard, J., 1997. A biophysical analysis of root growth under mechanical stress. Plant and Soil, 189: 155-164. doi: 10.1023/A:1004240706284
Cairns, M.A., Brown, S., Helmer, E.H., et al., 1997. Root biomass allocation in the world's upland forests. Oecologia, 111: 1-11. doi: 10.1007/s004420050201
Canadell, J., Jackson, R.B., Ehleringer, J.R., et al., 1996. A global analysis of root distribution for terrestrial biomes. Oecologia, 108: 389-411. doi: 10.1007/BF00333714
Fernandes, P., Oliver, R., Diatta, S., 2000. Changes in organic matter of a Ferrallitic tropical soil degraded by cropping systems: The case of southern Senegal. Arid Soil Research and Rehabilitation, 14: 137-150. doi: 10.1080/089030600263067
Fitter, A.H., Graves, J.D., Self, G.K., et al., 1998. Root production, turnover and respiration under two grassland types along an altitudinal gradient: Influence of temperature and solar radiation. Oecologia, 114: 20-30. doi: 10.1007/s004420050415
Gale, M.R., Grigal, D.F., 1987. Vertical root distribution of northern tree species in relation to successional status. Canadian Journal of Forest Research, 17: 829-834. doi: 10.1139/x87-131
Hou, C.T., Li, R.M., Feng, C.E., 2002. An approach to survey contents and methods of regional and agroecological geology: A case study in Hebei plain. Geological Science and Technology Information, 21(1): 66-70(in Chinese with English abstract).
Huang, J.H., Han, X.G., Chen, L.Z., 1999. Advances in the research of(fine)root biomass in forest ecosystems. Acta Ecologica Sinica, 19(2): 270-277(in Chinese with English abstract).
Jia, B.Q., Ci, L.J., Cai, T.J., et al., 2002. Preliminary research on changing soil water characters at ecotone between oasis and desert. Acta Phytoecologica Sinica, 26(2): 203-208(in Chinese with English abstract).
Jian, F.L., Li, H.X., 2001. Theoretical and methodological discussion on the research of dissipative structure of soil ecosystem. Journal of South China Agricultural University, 22(3): 16-19(in Chinese with English abstract).
Kang, S.Z., Hu, X.T., Goodwin, I., et al., 2002. Soil water distribution, water use, and yield response to partial root zone drying under a shallowgroundwater table condition in a pear orchard. Scientia Horticulturae, 92: 277-291. doi: 10.1016/S0304-4238(01)00300-4
Liu, C.M., Wang, H.X., 1999. The interface processes of water movement in the soil-crop-atmosphere system and water-saving regulation. Science Press, Beijing, 80-91(in Chinese).
Megonigal, J.P., Day, F.P., 1992. Effects of flooding on root and shoot production of bald cypress in large experimental enclosures. Ecology, 73(4): 1182-1193. doi: 10.2307/1940668
Neilson, R.P., 1995. Amodel for predicting continental-scale vegetation distribution and water balance. Ecological Applications, 5: 362-385. doi: 10.2307/1942028
Oikeh, S.O., Kling, J.G., Horst, W.J., et al., 1999. Growth and distribution of maize roots under nitrogen fertilization in plinthite soil. Field Crops Research, 62: 1-13. doi: 10.1016/S0378-4290(98)00169-5
Parton, W.J., Stewart, J.W.B., Cole, C.V., 1988. Dynamics of C, N, P and S in grassland soils: Amodel. Biogeochemistry, 5: 109-131. doi: 10.1007/BF02180320
Persson, H.D., 1983. The distribution and productivity of fine roots in boreal forests. Plant and Soil, 71: 87-101. doi: 10.1007/BF02182644
Phillips, W.S., 1963. Depth of roots in soil. Ecology, 44: 424. doi: 10.2307/1932198
Potter, C.S., Randerson, J.T., Field, C.B., et al., 1993. Terrestrial ecosystem production: Aprocessmodel based on global satellite and surface data. Global Biogeochem. Cycles, 7(4): 811-841. doi: 10.1029/93GB02725
Pregitzer, K.S., Kubiske, M.E., Yu, C.K., et al., 1997. Relationships among root branch order, carbon, and nitrogen in four temperate species. Oecologia, 111: 302-308. doi: 10.1007/s004420050239
Reynolds, H.L., Hungate, B.A., Chapin, Ⅲ.F.S., et al., 1997. Soil heterogeneity and plant competition in an annual grassland. Ecology, 78(7): 2076-2090.
Sala, O.E., Lauenroth, W.K., Parton, W.J., 1992. Long-term soil water dynamics in the shortgrass steppe. Ecology, 73(4): 1175-1181. doi: 10.2307/1940667
Schlesinger, W.H., Raikes, J.A., Hartley, A.E., et al., 1996. On the spatial pattern of soil nutrients in desert ecosystems. Ecology, 77(2): 364-374.
Tansley, S.A., 1935. The use and abuse of vegetational concepts and terms. Ecology, 16: 284-307. doi: 10.2307/1930070
Vogt, K.A., Grier, C.C., Vogt, D.J., 1986. Production, turnover and nutrient dynamics of aboveand belowground detritus of world forest. Advances in Ecological Research, 15: 303-377.
Yu, W.T., Yu, Y.Q., 2001. Advances in the research of underground biomass. Chinese Journal of Applied Ecology, 12(6): 927-932(in Chinese with English abstract).
Zhang, R.Z., Li, X.G., Hu, H., et al., 1998. Laws of soil moisture variation in farmland in loess area of Gansu Province. Journal of Soil Erosion and Soil and Water Conservation, 4(4): 53-59(in Chinese with English abstract).
Zhang, S.Q., Shan, L., 2001. Research progress on water uptake in plant roots. Chin. J. Appl. Environ. Biol., 7(4): 396-402(in Chinese with English abstract).
Zhang, W.Z., Gao, Q., 1994. Exploration of the movements ofwater and dissolved salts in soils under different plant communities in Aneurolepidium chinense grassland of Songnen plain. Acta Phytoecologica Sinica, 18(2): 132-139(in Chinese with English abstract).
Zhu, T.C., Zhong, Z.C., Li, J.D., 1988. Plant ecology. Higher Education Press, Beijing, 42-44(in Chinese).
白永飞, 许志信, 李德新, 2002. 内蒙古高原针茅草原群落土壤水分和碳、氮分布的小尺度空间异质性. 生态学报, 22(8): 1215-1223. doi: 10.3321/j.issn:1000-0933.2002.08.007
候春堂, 李瑞敏, 冯翠娥, 2002. 区域农业生态地质调查内容与方法. 地质科技情报, 21(1): 66-70. doi: 10.3969/j.issn.1000-7849.2002.01.015
黄建辉, 韩兴国, 陈灵芝, 1999. 森林生态系统根系生物量研究进展. 生态学报, 19(2): 270-277. doi: 10.3321/j.issn:1000-0933.1999.02.021
贾宝全, 慈龙骏, 蔡体久, 等, 2002. 绿洲—荒漠交错带土壤水分变化特征初步研究. 植物生态学报, 26(2): 203-208. doi: 10.3321/j.issn:1005-264X.2002.02.011
简放陵, 李华兴, 2001. 土壤生态系统耗散结构变异规律研究的理论与方法探讨. 华南农业大学学报, 22(3): 16-19. doi: 10.3969/j.issn.1001-411X.2001.03.005
刘昌明, 王会肖, 1999. 土壤—作物—大气界面水分过程与节水调控. 北京: 科学出版社, 80-91.
宇万太, 于永强, 2001. 植物地下生物量研究进展. 应用生态学报, 12(6): 927-932. doi: 10.3321/j.issn:1001-9332.2001.06.030
张仁陟, 李小刚, 胡华, 等, 1998. 甘肃黄土地区农田土壤水分变异规律研究. 土壤侵蚀与水土保持学报, 4(4): 53-59. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQS804.009.htm
张岁岐, 山仑, 2001. 根系吸水机理研究进展. 应用与环境生物学报, 7(4): 396-402. doi: 10.3321/j.issn:1006-687X.2001.04.019
张为政, 高琼, 1994. 松嫩平原羊草草地土壤水盐运动规律的研究. 植物生态学报, 18(2): 132-139. doi: 10.3321/j.issn:1005-264X.1994.02.004
祝廷成, 钟章成, 李建东, 1988. 植物生态学. 北京: 高等教育出版社, 42-44.