期刊
JOURNAL OF APPLIED ECOLOGY
卷 59, 期 6, 页码 1608-1618出版社
WILEY
DOI: 10.1111/1365-2664.14170
关键词
alien; invasion; laser rangefinder; LiDAR; spatial ecology; species distribution modelling; viewshed analysis; wilding conifer
资金
- Ministry of Business, Innovation and Employment [C09X1611]
- New Zealand Ministry of Business, Innovation & Employment (MBIE) [C09X1611] Funding Source: New Zealand Ministry of Business, Innovation & Employment (MBIE)
Pines (genus Pinus) are commonly cultivated for forestry purposes, but their rapid spread from plantations can cause substantial weed problems in many regions. Limited knowledge exists on the factors driving this spread, emphasizing the need for assessments across heterogeneous landscapes. Understanding the variables influencing pine establishment can inform management tools to protect vulnerable ecosystems from invasion.
1. Pines (genus Pinus) are cultivated extensively for forestry purposes, particularly in regions that are outside the genus' native range. The most common forestry species are also typically those most likely to escape cultivation and spread rapidly, and thus pines constitute a substantial weed problem in many regions. However, there is limited knowledge of the factors underlying the spread of pines from plantations. Assessments across heterogeneous landscapes are required to provide rigorous data to support management tools and policies aiming to protect vulnerable ecosystems from pine invasions. 2. We examined the spread of Pinus radiata from forestry plantations over a similar to 9,000 km(2) landscape on Banks Peninsula, New Zealand. We used ground-based surveys from a set of viewpoints to determine tree locations, coupled with geographical information system (GIS) viewsheds to define the area surveyed. We used boosted regression trees to build a habitat model for P. radiata establishment on Banks Peninsula. 3. We surveyed an area approximately 107 km(2), recording 470 naturally established P. radiata individuals. Our habitat models suggested that proximity to the nearest plantation forest was the most important variable predicting P. radiata establishment, with individuals most likely to establish within 150m of a plantation. Individuals were also most likely to establish in early successional shrub communities, proximate to roads, and on steeper topography. Highly grazed habitats were least vulnerable to P. radiata establishment. 4. The slope and aspect of the source plantation influenced the distances from the plantation at which P. radiata individuals were recorded, with individuals recorded furthest away likely to have originated from plantations that were south-facing or on steeper slopes, and therefore most exposed to strong winds. 5. Synthesis and applications. Our findings on distances from plantations at which individuals established, vulnerable habitats, and the interactions we detected among our predictor variables, can be extended to aid management of non-native conifer plantings elsewhere in the Southern Hemisphere. These data can be used to contribute to improvements of decision support systems that assess likely spread from non-native conifer plantings. Such tools can reduce the likelihood of future pine establishment, potentially preventing biological invasions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据