共查询到20条相似文献,搜索用时 174 毫秒
1.
2.
南宫自然保护区旅游资源及开发条件分析 总被引:1,自引:0,他引:1
对南宫自然保护区旅游资源中生物景观资源、地理景观资源、水文景观资源、天象景观资源、人文景观资源和旅游开发条件进行了分析评价,总结出保护区旅游开发的优势和制约因素。 相似文献
3.
从地文资源、水文资源、生物资源、人文资源、天象资源等方面分析了新生桥国家森林公园的风景资源。在此基础上,对风景资源进行了定性评价。从风景资源质量、区域环境质量和旅游开发利用条件三方面对新生桥国家森林公园进行分析和定量评价;得出了新生桥国家森林公园风景资源质量等级为一级,资源价值和旅游价值较高,应加强保护。针对新生桥国家森林公园风景资源的现状,提出了两方面保护措施:生物多样性保护方面对项目区的珍稀特有植物进行挂牌标记,严禁捕猎任何动物,设置生态走廊;生态环境保护方面要保护森林公园范围内各项景观、控制旅游接待规模、加强森林防火管理。 相似文献
4.
5.
对老蛇冲自然保护区旅游资源中生物景观资源、地理景观资源、水文景观资源、天象景观资源、人文景观资源和旅游开发条件进行了分析评价,并针对保护区旅游开发的制约因素提出了对策措施。 相似文献
6.
7.
8.
通过对广德县湿地资源的调查、摸底、了解和分析,基本掌握了广德县湿地的生态环境、湿地资源类型、面积及自然分区,阐述了广德湿地自然保护区、湿地公园发展历程、发展现状、经验和问题,在分析广德县湿地资源及保护管理基本概况的基础上,对广德县湿地资源如何进一步加强保护管理拟定了短期、中期和长期目标,展望了广德县湿地资源保护和管理的美好前景,同时也为加大对广德县湿地资源保护和管理的力度,奠定和夯实了理论基础。 相似文献
9.
《内蒙古林业调查设计》2016,(4):68-71
内蒙古大兴安岭北部原始林区是中国目前最大且尚未开发的原始林区。文章通过对其现有的森林风景资源、水文景观资源、野生动物资源、地文景观资源、天象景观资源、人文景观资源、环境质量、基础设施条件、旅游商品、外部交通、森林风景资源质量和周围旅游资源的翔实叙述,展示了内蒙古大兴安岭北部原始林区建成国家级森林公园的可行性,同时,对公园的体制设想提出了建议。 相似文献
10.
文章对玉屏县南门坡森林公园旅游资源中生物景观资源、地文景观资源、水文景观资源、天象景观资源、人文景观资源和旅游开发条件进行了分析评价,并针对森林公园旅游开发的不利因素提出了对策措施。 相似文献
11.
12.
13.
采用时空替代法,选取4,12,19,24,29 a橡胶林,研究不同树龄土壤微生物生物量碳含量的分布特征及其与有机碳含量的比值、以及与土壤养分含量的相关关系。结果表明:4,12,19,24,29 a橡胶林不同土层微生物生物量碳含量在28.87~138.71mg/kg之间,随土层深度的增加明显下降;土壤微生物生物量碳含量和有机碳的比值在0.66%~2.10%之间,土壤碳处于积累状态;土壤微生物生物量碳含量与有机碳、全氮、全磷含量有显著的相关性,相关系数R>72%。 相似文献
14.
Hendrien Beukema Finn Danielsen Grégoire Vincent Suryo Hardiwinoto Jelte van Andel 《Agroforestry Systems》2007,70(3):217-242
Plant and bird diversity in the Indonesian jungle rubber agroforestry system was compared to that in primary forest and rubber
plantations by integrating new and existing data from a lowland rain forest area in Sumatra. Jungle rubber gardens are low-input
rubber (Hevea brasiliensis) agroforests that structurally resemble secondary forest and in which wild species are tolerated by the farmer. As primary
forests have almost completely disappeared from the lowlands of the Sumatra peneplain, our aim was to assess the contribution
of jungle rubber as a land use type to the conservation of plant and bird species, especially those that are associated with
the forest interior of primary and old secondary forest. Species-accumulation curves were compiled for terrestrial and epiphytic
pteridophytes, trees and birds, and for subsets of ‘forest species’ of terrestrial pteridophytes and birds. Comparing jungle
rubber and primary forest, groups differed in relative species richness patterns. Species richness in jungle rubber was slightly
higher (terrestrial pteridophytes), similar (birds) or lower (epiphytic pteridophytes, trees, vascular plants as a whole)
than in primary forest. For subsets of ‘forest species’ of terrestrial pteridophytes and birds, species richness in jungle
rubber was lower than in primary forest. For all groups, species richness in jungle rubber was generally higher than in rubber
plantations. Although species conservation in jungle rubber is limited by management practices and by a slash-and-burn cycle
for replanting of about 40 years, this forest-like land use does support species diversity in an impoverished landscape increasingly
dominated by monoculture plantations. 相似文献
15.
大面积发展的落叶松人工纯林已占抚顺市森林面积的29.4%,为落叶松有害生物提供了丰富的营养源。林内生物多样性单一,造成落叶松有害生物灾害频发,严重影响了落叶松的健康生长和森林环境的稳定。据调查,抚顺地区落叶松有害生物多达34种,其中虫害19种、病害10种、鼠害3种、鸟害2种。该文总结了抚顺地区落叶松有害生物的发生情况和危害特点,并提出了有效防控措施及今后治理方向。 相似文献
16.
Tapping-tree density in rubber plantations affects the production of dry rubber. Farmers can estimate rubber productivity when they know with certainty the number of tapping trees within a plantation and can therefore increase productivity through optimized planting schematics. Historical data on planting distance between trees and between rows, planting density (trees/ha) and tapping-tree density (number of trees under tapping for latex harvest per hectare) from 1952 to 2014 have been collected for plantations in the Hainan, Yunnan and Guangdong provinces of South China. A plantation survey was conducted to collect more detailed data on current tapping tree and planting densities in various plantations in the three provinces. Planting density and row spacing are found to have increased with rubber tree planting time and plant spacing to have declined from 1952 to 2014. Tapping-tree density of rubber plantations from 1955 to 1995 in South China ranges from 270 to 345 tree/ha, averaging 300 trees/ha. Strong typhoons and cold snaps are important drivers of fluctuations in tapping-tree density. The factors driving tapping-tree density are similar across the three provinces but the degree of change differs between provinces. Tapping panel dryness (due to tapping beyond the natural limit of the rubber tree productivity), severe wind damage and cold damage are the major factors resulting in loss of tapping trees in plantations in South China. These results suggest that a combination of environmental management for extreme weather and targeted breeding could improve tapping-tree density in rubber plantation and therefore dry rubber yield per unit area. 相似文献
17.
18.
从西双版纳土地资源的开发利用讨论橡胶树与水 总被引:1,自引:1,他引:0
简述了西双版纳的自然条件及土地资源开发利用现状,重点分析了橡胶林下的土壤水分状况。研究资料表明,橡胶林下土壤水分及各种生态效应虽略逊于雨林、季雨林,但优于牡竹林、竹木混交林、灌丛草地,更优于刀耕火种轮歇地;在该地区现有规模性的产业开发中,以橡胶林维护生态的表现最好,仍需要有关部门要加强管理和引导群众植胶,合理开发利用土地资源。 相似文献
19.
云南橡胶树死皮病与立地环境关系调查 总被引:1,自引:1,他引:0
对云南植胶区不同橡胶宜林地、海拔高度、坡向的橡胶树死皮病进行调查,结果表明,死皮病发病率与不同等级宜林地、不同坡向有关:植胶环境条件最好的宜林地死皮病发病率最高,而次等宜林地则发病率随之降低;西坡橡胶树死皮病发病率显著高于其它坡向发病率,从宏观角度一定程度地证实橡胶树营养状态与死皮病的关系。 相似文献