Factors affecting the dynamics of vegetation in the landscapes of shimokamagari Island, southwestern Japan
Factors affecting the dynamics of vegetation in the landscapes of shimokamagari Island, southwestern Japan
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日本西南部下镰里岛景观植被动态的影响因素
DOI：
10.1007/bf02418942
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发表时间：
1992
影响因子：
5.2
通讯作者：
Y. Ohta
中科院分区：
文献类型：
--
作者：
N. Nakagoshi;Y. Ohta
在Seto岛海的一个岛屿Shimokamagari上，利用植被地图研究了景观中的植被格局。从历史的角度研究了社会和经济变化、场地条件和植被之间的关系。在经济发展的过程中，这个岛上的柑橘生产变得重要起来。然而，产量过剩、柑橘降价以及橙树遭受低温破坏，导致大片柑橘园被废弃。废弃的果园和松林中也出现了以葛根为主导的植物群落。果园的这些变化与土壤、地质、坡度、海拔、坡向等自然立地条件有关，也与作业路径密度等人为条件有关。引起变化的另一个因素是，自20世纪60年代S以来，森林凋落物的有机肥被化肥取代，中小松林变成了高大森林，高大松林变成了高大橡树林。在以人类为主的地区，影响植被过程的主要因素是经济活动，而荒地后的森林演替受自然立地条件的控制。
On Shimokamagari, an island of the Seto Island Sea, patterns of vegetation in the landscape were studied using vegetation maps. Relationships between social and economic changes, site conditions and the vegetation were examined from a historical perspective. In the process of economic development, mandarin orange production became important on this island. However, over-production, a reduction in the price of mandarin oranges and low-temperature damage to orange trees caused large citrus orchards to be abandoned. A plant community dominated by kudzu appeared in the abandoned orchards and the pine forests, as well. These changes in orchards were connected with the natural site conditions, such as soil, geology, inclination, elevation, direction of slope, and also with artificial conditions, such as density of working paths. Another factor causing change was the replacement of the organic fertilizer of litter from forests by chemical fertilizer since the 1960's. As a result, medium and small forests of pine became tall forests and tall forests of pine changed into tall oak forests. In the human-dominated areas, the major factors affecting the process of vegetation were economic activities, and after the abandonment of the farm-lands, forest succession were controlled by natural site conditions.