首页> 外文OA文献 >Ecosystem and Wildlife Implications of Brush: Management System Designed to Improve Water Runoff and Percolation
【2h】

Ecosystem and Wildlife Implications of Brush: Management System Designed to Improve Water Runoff and Percolation

机译:灌木丛对生态系统和野生生物的影响:旨在改善径流和渗滤的管理系统

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

With the settlement of Texas and establishment of ranchers to produce cattle, there was an effort to maximize beef production. This caused serious overgrazing. In addition, there was a reduced incidence of fires across the landscape to clear out brush. These factors led to deterioration of the grazing lands and provided an opportunity for invasive intrusion by brush and other species onto the land and riparian zones. There has been a large-scale conversion from grasslands and savannahs to wildlands over the last 150 years (Scholes and Archer, 1997). The overall impacts are significantly impaired uplands and reduced percolation and surface flow of water from rainfall which caused changes and loss in basic aquatic and terrestrial habitat.The State of Texas adopted a program to study and implement brush management systems across the state to improve the water availability in streams, rivers, reservoirs and aquifers, as well as to improve the rangelands. The feasibility studies have shown great promise for improving ranchland and improving the water situation. However, there is less known about the aquatic and wildlife species response implications of brush management. Certainly, there are opportunities for improving the viability of an ecosystem through brush management strategies and continuing management practices. The purpose of this study was to evaluate the changes in hydrology and biological diversity associated with brush management in two watersheds where significant data was already available.This study focused on assessing the aquatic and terrestrial species implications related to specified brush management strategies over time. This involved an integrated analysis including modeling of the landscape, assessing biological diversity and developing economic implications for the two watersheds (Twin Buttes and Edwards regions). Thus, this study is comprised of three parts: modeling of brush management strategies temporally, assessing biological diversity (aquatic and terrestrial) and estimating economic implications. This represents a complex analysis involving variable units and multiple disciplines.Previous feasibility studies of brush removal have been targeted at maximizing water runoff. This analysis is an extension that is designed to examine the implications of brush management under a more restrictive set of brush removal criteria that were chosen based upon wildlife considerations. To achieve the integration of hydrologic modeling, range ecology, and economic implications, there were three team meetings bringing together all components to review status and set priorities for the remainder of the work. In addition, scientists in the three basic groups of specialization interacted daily along with representatives of the Corps of Engineers to assure that each decision was reflected in other parts of the analyses. The major addition of this analysis to brush management feasibility studies being conducted as part of the Texas brush management plan is the consideration of wildlife and aquatic biota and assessing changes in biological diversity likely to result from alternative brush management scenarios.
机译:随着德克萨斯州的定居并建立了牧场生产牛,人们努力使牛肉的产量最大化。这导致了严重的过度放牧。此外,清除灌木丛的火灾减少了。这些因素导致了放牧地的恶化,并为刷和其他物种侵入土地和河岸带提供了机会。在过去的150年中,已经从草原和大草原向荒地大规模转化(Scholes和Archer,1997年)。总体影响是严重破坏了高地,降雨减少了水的渗透和地表流动,导致基本的水生和陆地生境发生变化和丧失。德克萨斯州通过了一项计划,研究和实施全州的刷毛管理系统,以改善水质。溪流,河流,水库和含水层的可用性,以及改善牧场。可行性研究显示了改善牧场和改善水状况的巨大希望。但是,关于刷管理对水生和野生生物物种反应的影响知之甚少。当然,存在通过刷子管理策略和持续管理实践来改善生态系统生存能力的机会。这项研究的目的是评估已经有大量数据的两个流域与刷管理相关的水文和生物多样性的变化。本研究的重点是评估随着时间的推移与特定刷管理策略有关的水生和陆生物种含义。这涉及到综合分析,包括景观建模,评估生物多样性以及对两个流域(双峰谷和爱德华兹地区)的经济影响。因此,这项研究包括三个部分:在时间上对刷毛管理策略进行建模,评估生物多样性(水生和陆生的)以及估算经济影响。这代表了涉及可变单位和多个学科的复杂分析。先前的除刷可行性研究的目标是最大程度地提高水流量。该分析是对扩展的设计,旨在检查在基于野生生物考虑因素而选择的一套限制性更强的刷子去除标准下,刷子管理的含义。为了实现水文模型,范围生态学和经济意义的整合,举行了三次小组会议,召集所有组成部分以审查现状并为其余工作设定优先级。此外,三个基本专业组中的科学家每天与工程兵团的代表进行互动,以确保每个决策都反映在分析的其他部分。作为德州刷子管理计划的一部分,这项分析在刷子管理可行性研究中的主要补充是对野生动植物和水生生物的考虑,并评估了可能由其他刷子管理方案导致的生物多样性变化。

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号