Spatial heterogeneity of grassland vegetation : a statistical approach

草原植被的空间异质性：统计方法

• 批准号: 10640609
• 负责人: SHIYOMI Masae
• 金额: $ 2.18万
• 依托单位: IBARAKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10640609/
• 关键词: Grassland vegetation; Spatial pattern; Heterogeneous distribution; Grazing grassland; Model; Statistical ecology; 空間的不均一性; 窒素; 植生; フン尿の分布; バイオマスの分布; 種の多様性; 半自然草地; 物質循環; 植物群集; 不均一性; バイオマス; 放牧

The objective of this study is to clarify on the relationships between spatial heterogeneity and sustainability in grasslands. We can speculate from results of the study as follows : (a) grazing animals induce a spatial heterogeneity of nutrients and seed over the grassland through their excrement, (b) the large amount of nutrients around areas with excreta brings about active nutrient cycling and promotes the re-growth of plants there, c plant around feces are not consumed by grazing animals due to the bad smell and low digestibility, (d) patchy scattering of seeds through feces may lead to the regeneration of new plant species, then, (e) strong spatial heterogeneity of plant biomass/vegetation occurs over the pasture, and as the result (f) the sustainability in matter cycling between plants, animals and their environment is maintained through the small-scale heterogeneity in the biomass and vegetational distribution in the grassland.

本研究的目的是阐明草地空间异质性与可持续性之间的关系。我们可以从研究结果推测如下：（a）放牧动物通过其排泄物在草地上诱导了养分和种子的空间异质性，（B）排泄物周围大量的养分带来了活跃的养分循环，促进了那里的植物的再生长，（c）排泄物周围的植物由于气味难闻和消化率低而不被放牧动物消耗，（d）通过粪便零星散布的种子可能导致新植物物种的再生，然后，（e）在牧场上出现植物生物量/植被的强烈空间异质性，结果，（f）通过草原生物量和植被分布的小规模异质性，维持植物、动物及其环境之间物质循环的可持续性。

项目成果

Shiyomi M. 他: "Spatial pattern changes in aboveground plant biomass in a grazing pasture"Ecological Research. 13. 313-322 (1998)

Shiyomi M. 等：“放牧牧场地上植物生物量的空间格局变化”生态研究 13. 313-322 (1998)。

Shiyomi M. and Tsaiki M.: "Model for the spatial pattern formed by a small herd in grazing cattle"Ecological Modelling. 119. 231-238 (1999)

Shiyomi M. 和 Tsaiki M.：“放牧牛群形成的空间格局模型”生态模型。

塩見正衛、安田泰輔、堀良通: "べき乗則による植生・土地利用区分図の解析-茨城県を例にして"システム農学. 14. 84-93 (1998)

Masae Shiomi、Taisuke Yasuda、Yoshimichi Hori：“利用幂律分析植被和土地利用分类图 - 以茨城县为例”《系统农业》14. 84-93 (1998)。

E.Yano,K.Matsuo,M.Shiyomi,D.A.Andow: "Biological Invasion of Ecosystem by Pests and Beneficial Organisms"NIAEST Yokendo Publishers.

E.Yano，K.Matsuo，M.Shiyomi，D.A.Andow：“害虫和有益生物对生态系统的生物入侵”NIAEST Yokendo 出版社。

M.Shiyomi 他: "Spatial pattern changes in aboveground plant biomass in a grozing pasture" Ecological Research. 13・3. 313-332 (1998)

M. Shiyomi 等：“放牧牧场地上植物生物量的空间格局变化”生态研究 13・3（1998）。