Declining Woody Vegetation in Riparian Ecosystems of the Western United States
Declining Woody Vegetation in Riparian Ecosystems of the Western United States
复制标题
美国西部河岸生态系统中木本植被的减少
DOI：
10.1093/wjaf/16.4.169
复制
发表时间：
2001
影响因子：
--
通讯作者：
D. Neary
中科院分区：
文献类型：
--
作者：
R. A. Obedzinski;C. Shaw;D. Neary
河岸生态系统在西部景观中发挥着重要的生态功能。在许多这些关键系统中，木本植物成分严重减少。原因包括外来物种的入侵、压力引起的死亡、昆虫和疾病袭击的增加、干旱、海狸、火灾、气候变化和各种人类活动。后者包括农业发展、地下水枯竭、水坝建设、引水、砾石开采、木材采伐、娱乐、城市化和放牧。本文探讨了影响下降的因素，并讨论了这些因素之间的相互作用在导致下降的重要性。它还澄清了需要解决的问题，以恢复和维持可持续的河岸生态系统在美国西部，包括植被的功能，所涉及的木本植物物种，水文条件，河岸带结构，景观特征，地貌和管理目标。西方J.应用程序。16（4）：169-181。
Riparian ecosystems serve critical ecological functions in western landscapes. The woody plant components in many of these keystone systems are in serious decline. Among the causes are invasion by exotic species, stress-induced mortality, increases in insect and disease attack, drought, beaver, fire, climatic changes, and various anthropogenic activities. The latter include agricultural development, groundwater depletion, dam construction, water diversion, gravel mining, timber harvesting, recreation, urbanization, and grazing. This article examines the factors implicated in the decline and discusses the importance of interactions among these factors in causing decline. It also clarifies issues that need to be addressed in order to restore and maintain sustainable riparian ecosystems in the western United States, including the function of vegetation, silvics of the woody plant species involved, hydrologic condition, riparian zone structure, and landscape features, geomorphology, and management objectives. West. J. Appl. For. 16(4):169-181.