共查询到20条相似文献,搜索用时 781 毫秒
1.
2.
古树名木保护的现状与措施浅探 总被引:1,自引:0,他引:1
介绍了古树名木的定义,指出了古树名木存在的社会价值,结合古树名木的生存现状对古树名木进行了分类,并根据古树名木的生存现状详细分析了影响古树名木生存、生长和保护的因素,探讨了保护古树名木的积极意义,并有针对性地提出了对古树名木的研究和保护措施,为各地进行古树名木的保护提供了参考. 相似文献
3.
《绿色科技》2020,(1)
指出了古树名木是森林资源的一个重要构成部分,不仅可以提供优美的自然景观,还可以打造深厚具有历史沉淀的人文景观,因此,研究古树名木资源现状对古树名木保护与利用具有重要意义。对贵定县古树名木资源现状及空间分布情况等进行了全面分析,结果表明:贵定县古树名木共有1868株,主要以三级保护和二级保护为主,占古树名木总株数的94.70%,三级保护株数为1631株,二级保护株数为138株。贵定县古树名木多分布在低中山区域,占全县古树名木株数的69.91%;其次是中中山区域,占全县古树名木株数的17.77%;分布最少的是高中山,仅占全县古树名木株数的0.32%。古树名木坡度空间分布株数依次为平坡陡坡斜坡急坡缓坡险坡。为此,提出了对古树名木保护的对策与建议。 相似文献
4.
内蒙古自治区古树名木保护现状、存在问题及保护建议 总被引:1,自引:0,他引:1
郝向春 《内蒙古林业调查设计》2019,(3):83-84
文章介绍了内蒙古自治区古树名木现状,分析了古树名木保护工作存在的问题,并提出加强古树名木保护工作的措施。 相似文献
5.
6.
《国土绿化》2008,(6)
古树名木是林木资源中的瑰宝,近年来古树名木保护事业受到全社会的日益关注。江西省是中华古树名木资源较丰富的省份之一,他们根据新形势开展古树名木保护事业的需要,由省人大常委会制订颁布了《江西省古树名木保护条例》。该《条例》是最早的一部由省里制订的古树名木保护条例,也是目前惟一一部由省里制订的古树名木保护条例(北京、天津、上海除外)。这部《条例》有很多亮点,除了进一步科学划分了古树保护等级,明确了各级主管部门和全社会古树名木保护的职责和义务,从严古树名木迁移审批等外,尤其,明确规定了各级政府绿化委员会对古树名木保护进行统一组织、协调,使得党中央、国务院赋予各级政府绿化委员会对各行、各业的绿化工作实行统一领导、指导、协调、检查和监督的职能在古树名木保护事业上有相应的体现。为了给各地在制订古树名木保护法规时,提供可供借鉴、有价值的参考资料,现将这部《条例》在《国土绿化》杂志再次刊登。总体而言,这部《条例》各项内容规定比较完善,但是,鉴于近年在一些地方存在挖掘移植买卖古树名木的现象,为此建议各地在制订古树名木保护法规时进一步上收迁移古树名木的审批权。同时,应进一步强调绿委在保护古树名木方面的职能作用,如果在古树名木保护法规中明确规定"各级人民政府绿化委员会对城乡古树名木保护工作实行统一领导、指导、协调、督促和检查",制订的法规就更加完善了。(各级人民政府绿化委员会的法定职能详见《中共中央国务院关于深入扎实地开展绿化祖国运动的指示》(中发[1984]3号)第十四页的规定和《中华人民共和国城市绿化条例》第七条的规定。) 相似文献
7.
8.
通过分析古树名木保护管理现状,总结出古树名木保护管理过程中存在的问题,提出了保护古树名木的保护与管理对策,为古树名木科学有效保护管理提供决策参考。 相似文献
9.
10.
11.
长沙市古树名木资源及其保护对策 总被引:5,自引:5,他引:0
据调查,长沙市建档树龄100年以上的古树名木1265株,分属34科54属69种。其中一级古树23株,二级古树51株,三级古树1191株,属最多的科是蝶形花科,有4属。种最多的科是壳斗科,有6种。株数最多的树种是香樟,有438株,其次是枫香,有250株,两者累计占全市古树名木总株数的54.39%。资源最多的是岳麓区,有714株,占全市总株数长沙市古树名木资源及其保护对策的56.44%。利用MAPINFO PROFESSIONAL地理信息系统软件为平台,建立了长沙市古树名木资源动态管理系统,为古树名木的保护奠定了基础。针对存在的问题,提出了全市古树名木的保护对策。
相似文献
12.
13.
14.
系统分析湖北省谷城县古树树种组成、分布特征以及影响古树生长的环境因子,并应用访谈法、文献追踪法、实地勘测法和类比推断法对谷城县古树进行调查,对古树的物种组成、分布以及生长状况,以及基于DEM坐标网格法对古树空间分布进行分析。结果表明,全县调查到存活古树共1 275株,隶属于26科41属51种。其中一级、二级和三级古树分别为99株、102株和1 074株;正常生长古树1 247株,衰弱古树26株,濒危古树2株。基于DEM经纬度(0.05°)和投影(5 km×5 km)网格数据分析,古树均呈聚集分布;古树在中、低海拔分布集中;海拔与古树生长势间呈显著正相关;环境因子和植物病虫害是影响谷城县古树生长的关键因子。谷城县古树空间和海拔高聚集度区域的人类活动最为频繁,建议地方林业部门根据现有古树资源分布特点及生物危害现状,科学制定古树保护规划和管护措施。 相似文献
15.
16.
T.E. Kolb J.K. Agee P.Z. Fulé N.G. McDowell K. Pearson A. Sala R.H. Waring 《Forest Ecology and Management》2007
We review current knowledge about the use of management treatments to reduce human-induced threats to old ponderosa pine (Pinus ponderosa) trees. We address the following questions: Are fire-induced damage and mortality greater in old than younger trees? Can management treatments ameliorate the detrimental effects of fire, competition-induced stress, and drought on old trees? Can management increase resistance of old trees to bark beetles? We offer the following recommendations for the use of thinning and burning treatments in old-growth ponderosa pine forests. Treatments should be focused on high-value stands where fire exclusion has increased fuels and competition and where detrimental effects of disturbance during harvesting can be minimized. Fuels should be reduced in the vicinity of old trees prior to prescribed burns to reduce fire intensity, as old trees are often more prone to dying after burning than younger trees. Raking the forest floor beneath old trees prior to burning may not only reduce damage from smoldering combustion under certain conditions but also increase fine-root mortality. Thinning of neighboring trees often increases water and carbon uptake of old trees within 1 year of treatment, and increases radial growth within several years to two decades after treatment. However, stimulation of growth of old trees by thinning can be negated by severe drought. Evidence from young trees suggests that management treatments that cause large increases in carbon allocation to radial xylem growth also increase carbon allocation to constitutive resin defenses against bark beetle attacks, but evidence for old trees is scarce. Prescribed, low-intensity burning may attract bark beetles and increase mortality of old trees from beetle attacks despite a stimulation of bole resin production. 相似文献
17.
We tested the hypotheses that hydraulic conductance is lower in old (about 250 years old and 30 m tall) compared to young (about 40 years old and 10 m tall) Pinus ponderosa Dougl. ex Laws. trees and that lower hydraulic conductance of old trees limits their photosynthesis. Hydraulic conductance at the end of summer 1995, calculated from leaf water potential and leaf gas exchange measurements on one-year-old needles, was 44% lower in old trees compared to young trees growing in a mixed age-class stand on the east slope of the Oregon Cascades. Whole-tree sapflow per unit leaf area averaged 53% lower in old trees compared to young trees and mean hydraulic conductance calculated from sapflow and water potential data was 63% lower in old trees than in young trees. For the entire summer, stomatal conductance (g(s)) and assimilation (A) declined more steeply with air saturation deficit (D) in old trees than in young trees. For both old and young trees, mean g(s) and A were approximately 32 and 21% lower, respectively, at typical midday D values (2.5-3.0 kPa). We hypothesized that if hydraulic conductance limits g(s) and A, then increasing or decreasing the leaf specific conductance of a branch will result in proportional changes in the responses of g(s) and A with D. Removal of 50% of the foliage from a set of experimental branches on old trees caused g(s) and A to decline less steeply with D in early summer, but values were not significantly different from control values in late summer. Cutting transverse notches in branches on young trees had no effect on the responses of g(s) and A with D. Leaf nitrogen content and photosynthetic capacity were similar suggesting that differences in g(s) and A between old and young trees were not caused by differences in photosynthetic capacity. 相似文献
18.
19.
20.
古树名木的保护是林业部门的一项重要职责,但长期以来,古树名木档案十分缺乏,这对保护相当不利。本文以广东省为例,着重阐述了古树名木建档工作的重要意义,并提出为古树名木建档的具体做法.使古树名木档案能真正有效地被利用,为今后开展古树名木保护工作打好基础。 相似文献