The southern white rhinoceros (Ceratotherium simum simum) faces an uncertain future in the wild due to increased poaching pressure and habitat fragmentation, thus management of reproductively successful populations is critical importance. Successful reproductive outcomes may be mediated by diet gut microbial diversity; therefore, understanding dynamics within between captive help improve conser...

Quantifying landscape pattern and its change are essential for the monitoring and assessment of environmental consequences of urban area. This paper aims to analyze spatiotemporal patterns of urban landscape changes in Kathmandu Valley, Nepal by combining remote sensing, GIS and landscape metrics. Multi-temporal satellite images from high resolution (CORONA, SPIN and IKONOS) to moderate resolut...

We report ultra-narrow-linewidth erbium-doped aluminum oxide (Al2O3:Er3+) distributed feedback (DFB) lasers with a wavelength-insensitive silicon-compatible waveguide design. The waveguide consists of five silicon nitride (SiNx) segments buried under silicon dioxide (SiO2) with a layer Al2O3:Er3+ deposited on top. This design has a high confinement factor (> 85%) and a near perfect (> 98%) inte...

Exploring the complex effects of landscape patterns on ecosystem services (ESs) has become increasingly important in offering scientific support for effective spatial planning and management. However, there is a particular lack research nonlinear ESs scale dependence. Taking Huainan City (in China) as case study, this study adopted InVEST model to estimate four key including carbon storage (CS)...

The Asian longhorned beetle (ALB), Anoplophora glabripennis (Motschulsky), is one of the most harmful invasive alien species attacking hardwood trees. Increasing human activities have caused changes in landscape patterns ALB habitats, disrupting habitat balance and weakening landscape-driven pest suppression. However, relationship between (compositional structural heterogeneity) populations has...

Introduction The ecological conservation redline (ECR) policies conducted in China are an important innovation to protect biodiversity, safeguard security, and achieve sustainable development. Pearl River Delta (PRD) area implemented the ECR 2005. Methods This study examines contrast between 15 years before after It also reveals policies' effects by comparing land use change, landscape pattern ...

Taihu Lake in China has suffered from severe eutrophication over the past 20 years which is partly due to significant land use/cover change (LUCC). There is an increasing need to detect the critical watershed region that significantly affects lake water degradation, which has great significance for environmental protection. However, previous studies have obtained conflicting results because of ...

Progressing globalisation and suburbanisation are driving dynamic changes in land management, particularly suburban zones. Green infrastructure its impact on human quality of life playing an increasingly important role appropriate spatial because activities that changing the natural environment. Therefore, monitoring assessing proportion green spaces is essential for environmental, urban social...

为探究不同时空尺度土地利用与水质的相互关系，以黄河流域为研究对象，基于2018年河流水质与土地利用数据，提取3种空间尺度（1000 m河段缓冲区、500 m河岸带缓冲区、子流域）的景观格局指数，结合4个季节河流水质指标，采用冗余分析方法定量探讨土地利用对河流水质的多时空尺度影响，获得水质资源管理最有效的时空尺度.结果表明：（1）在3种空间尺度下，耕地和草地占比最大.斑块密度（PD）在1000 m河段缓冲区尺度下更大，香农多样性指数（SHDI）在3种空间尺度下变化不大；（2）水质指标季节性和空间性存在显著差异，夏季水质优于冬季；（3）土地利用在夏季和1000 m河段缓冲区尺度下对水质影响最显著；（4）不同景观格局指数对河流水质产生的影响不同，耕地面积占比和林地面积占比、未利用地面积占比和SHDI对水质影响最为显著，除了耕地面积占比和PD值的增加会导致水质下降外，其余土地利用指数在大多数...