河北省生态功能修正价值的时空分布
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国家自然科学基金资助项目(70673097)


Spatial-temporal distribution of the corrected ecological function values in Hebei Province
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    摘要:

    当前的土地生态功能价值变化研究,因未涵盖所有用地类型,区域差异性考虑不够,而受到一定的影响。以河北省为例,归纳总结了所有地类的生态功能理论价值,利用生态脆弱性指标(包括年均降水量、干燥度、灾害天气频率、植被覆盖率、地形起伏度、土壤可蚀性、土层厚度、组成物松散度、环境容量)设计出修正系数对其地域差异性进行了修正;在此基础上,利用2004年的地均生态功能修正价值及其在1996—2004年间的变化率、2004年的生态-经济脱钩指数等3个指标对河北省各县生态功能价值的时空变化进行了探讨。研究结果显示,河北省的生态功能状况,无论在时间上还是在空间上都具有比较明显的地域性分布规律,而且生态功能保护愈好的县,其生态与经济之间的协调程度也愈高。借助这些指标和规律,对河北省的生态经济功能区进行了划分,对各县经济发展如何更好地符合其生态功能保护进行了探索,以期为河北省的生态功能区域统筹提供有价值的参考。

    Abstract:

    The current research on the temporal-spatial change of ecological function value (EFV) of land is affected by the fact that not all kinds of land are evaluated and the regional differences of EFV are still neglected. In this paper, the theoretical EFVs(TEFV) of all kinds of land are summarized; then the ecological frangibility(EF) index (including annual precipitation, aridity index, frequency of disaster weather, vegetation coverage rate, topographic relief amplitude, soil erodibility, soil horizon depth, loose degree of organic matter, and environmental capacity) is used to design a corrected index to amend the regional difference of EFV; then, the corrected EFV(CEFV) per unit of area in 2004, the average change rate of EFV per unit of area from 1996 to 2004, and eco-economic decoupling index(E-EDI) in 2004 are used to analyze the temporal-spatial change of EFV (147counties of Hebei province are taken as the sample). The results show that, there is a zonal spatial distribution rule of EFVs in Hebei province clearly, and the spatial distribution between EFVs and E-EDIs have prominent correlations. Based on above indexes and rules, a division of eco-economic regionalization of Hebei province is made to explore how to harmonize between economy development and ecological environment protection. The conclusions would be taken as a theoretical basis when constituting a regional overall coordinated ecological function plan.

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杜红亮*,陈百明,杨克.河北省生态功能修正价值的时空分布.生态学报,2010,30(9):2361~2370

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