Results 31 to 40 of about 2,655 (159)

Ecological Characteristics of Phoebe bournei (Hemsl.) Yang Community in Fujian [PDF]

open access: yes, 2011
本次研究以福建省内沙县罗卜岩自然保护区(以下简称罗卜岩)、明溪君子峰自然保护区沙洲坑(以下简称沙洲坑)、政和凤头村(以下简称凤头村)、泰宁世界自然遗产地沁洋川(以下简称沁洋川)等4个闽楠原生群落为研究对象,在每个群落各设置4块10m×10m的样方进行每木调查,并在各样地取3块20m×20m样方进行种群调查,运用植物群落学和生态学的原理和方法对植物区系成分、物种多样性、空间分布格局、以及生态位的各生态指标进行测定,揭示了福建省4处成片闽楠原生群落的主要生态特征的共同点和差异,分析了造成这些差异的因素所在 ...
肖霜霜
core  

Elevation, soil pH and calcium availability shape regional and local scale spatial patterns of PhoD gene abundance in tropical and subtropical forests

open access: yesFunctional Ecology, Volume 40, Issue 4, Page 983-1000, April 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra   +3 more
wiley   +1 more source

A Study on the Spatical Distribution of Producer Services in Taiwan [PDF]

open access: yes, 2010
自20世纪80年代以来,台湾地区产业结构快速调整,制造业逐渐式微,服务业加速成长,以服务业为重心的产业结构逐步实现。在服务业中,又以生产者服务业的成长最为迅猛,在促进台湾经济从工业化向后工业化顺利过渡过程中扮演着极其重要的角色。当前,生产者服务业区位理论的研究是国内外经济地理学和区域经济学研究的前沿课题。这种情况下,就台湾生产者服务业空间布局进行研究,不仅有助于总结台湾地区生产者服务业空间分布的特征规律,而且有利于推动生产者服务业区位理论研究的进一步深化。本文在前人研究的基础上 ...
蒋亚杰
core  

Evaluation of Eco-environmental Vulnerability of Pearl River Delta Based on PSR Model [PDF]

open access: yes, 2022
[Objective] The spatio-temporal evolution characteristics and its reasons of eco-environmental vulnerability in the Pearl River delta were studied in order to provide theoretical basis for regional development.
Ma Wei, Wang Yonghong, Zheng Huiling
core   +1 more source

Elephant barrier behaviors in response to conflict mitigation fences

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Human–wildlife conflict is a major conservation issue, particularly in lower income countries, where it affects marginalized people and leads to the extirpation of threatened species. Managers increasingly use fences to reduce this conflict but lack evidence on the effectiveness of these barriers, especially on whether this reduces the number ...
Dominique Gonçalves   +2 more
wiley   +1 more source

Spatial distribution characteristics and influencing factors of intangible cultural heritage in Southwest China(西南地区非物质文化遗产空间分布特征及影响因素分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2023
以我国西南地区614项国家级非物质文化遗产为研究对象,综合运用最邻近指数、核密度、地理集中指数、地理探测器、缓冲区分析等方法分析西南地区非物质文化遗产的空间分布特征及其影响因素。结果显示:(1)西南地区非物质文化遗产类型空间分布差异显著,传统技艺、传统舞蹈较多,传统体育/游艺与杂技较少;空间分布呈明显的凝聚特征,其中,传统技艺、传统医药凝聚特征显著,传统体育/游艺与杂技趋向均匀分布;(2)西南地区非物质文化遗产整体呈“东多西少”的特征,形成“两核一带”空间分布格局;(3)影响因素主要有自然因素 ...
何银春(HE Yinchun)   +3 more
doaj   +1 more source

Study on the Population Ecology of Torreya jackii in Taining, Fujian, China [PDF]

open access: yes, 2010
种群的年龄结构、空间分布格局和生态位是种群生态学研究的重要研究内容。同时丹霞地貌这一特殊的环境是很多珍稀植物的避难所,泰宁丹霞景观区域就是我国特有的二级保护植物长叶榧树(TorreyajackiiChun.)集中分部地之一。本文通过调查及一些种群生态学的研究方法,对泰宁丹霞景观区域长叶榧树群丛类型、种群的年龄结构、丹霞景观区内山地果场长叶榧树的空间分布格局以及长叶榧树所在群落乔木层主要种群生态位进行了研究。结果表明: 1.长叶榧树在泰宁丹霞景观区主要分布于亚热带暖性针叶林和针阔混交林的14个群丛类型中 ...
张静雅
core  

Spatial-temporal Evolution of Carbon Storage and Spatial Autocorrelation Analysis in Zhengzhou City Based on InVEST-PLUS Model [PDF]

open access: yes, 2023
[Objective] One of the main drivers of terrestrial ecosystem carbon storage is land use change. The spatial-temporal response relationship between land use and carbon storage evolution in Zhengzhou City, Henan Province was analyzed based on the logic of “
Sun Yifan, Wang Xia, Xu Mengfei
core   +1 more source

Life Stage‐Specific Genetic Diversity and Landscape Characteristics Collectively Influence Genetic Recovery in Pometia pinnata Population 生活史阶段特异的遗传多样性与景观特征对番龙眼种群遗传恢复的协同影响

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.
Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee   +5 more
wiley   +1 more source

Water use characteristics of two Sonneratia mangrove species [PDF]

open access: yes, 2017
红树林生长在热带、亚热带海岸潮间带。虽然海水充沛,但高盐度的海水使得土壤孔隙水水势极低,这在很大程度上限制了红树植物对水分的吸收,造成红树植物生理干旱的现象。红树植物大都采取了相同的水分利用策略,就是在节约用水的同时,最大程度地吸收水分。对红树植物的水分利用特征的研究是认识红树植物适应潮间带高盐及淹水胁迫的关键。本研究利用热扩散式茎流仪和微型气象站,在2015–2016年期间对深圳福田红树林自然保护区(22°31'N,114°0'E)内的两种同龄的海桑属红树植物,无瓣海桑 ...
赵何伟
core  

Home - About - Disclaimer - Privacy