The harmonious coexistence between man and nature is one of the important connotations of Chinese modernization. Research on public perception can effectively test the governance efficiency of rural humansettlement environment. Based on CSS2021 data, we selected fsQCA method to study the mixed effects of 8 antecedents and configuration spatial difference characteristics on rural human settlement environment perception. The above antecedents are self-recognition, pollution perception, internet usage, social responsibility, social atmosphere, economic governance, environmental governance and administrative transparency. The results show that the local pollution degree and government pollution control are the most concerned ecological environment indicators of rural residents. This study confirms that the public’s demand for rural living environment has risen to the high-level form and to the spiritual level of humanistic environment and community governance. In addition, there are significant spatial differences between the environmental pollution degree and the settlement plan. The core condition of environmental perception in the east is residents’ subjective perception, while the central region is the social atmosphere, and the western region is the government governance. This study proposes the following optimization plan. For the government, the key and difficult point in the improvement of rural ecological environment is the control of pollution sources. In the future, we should continue to strengthen and improve the quality of rural human environment and implement differentiated living environment management according to local conditions. To a certain extent, this study is expected to provide a new perspective for the governance of rural human settlement environment.
As a key afforestation tree species in the northern region,Pinus sylvestris var.mongolica matures earlier than in its provenance after being introduced to Zhanggutai,and its nutrient input mainly relies on litter.To elucidate the mechanism of litter yield variation in mature P.sylvestris var.mongolica plantations and provide a scientific basis for forest land regeneration,the annual total litter,monthly dynamics of litter components in the P.sylvestris var.mongolica forestland in Zhanggutai Town,Zhangwu County,Liaoning Province and the influencing factors were analyzed.The results showed that after entering the mature period,the monthly dynamics of total litter amount in the P.sylvestris plantation exhibited a bimodal pattern.In May,the litter volume of each component was relatively balanced,while in October,the majority of the total litter consisted of needles,accounting for 90.86％.Needles were the predominant component of litter of P.sylvestris var.mongolica plantation,comprising over half of the total litter at different forest densities and growth stages.The differences in stand growth stage and stand density did not have a significant impact on the total litter amount and the amount of each litter component(P＞0.05),but exhibited an increasing trend with increasing stand growth stage and stand density.Additionally,wind speed emerged as a key factor affecting branch litter amount,while monthly average temperature was identified as a key factor influencing the total litter amount.Precipitation had a relatively minor impact on the litter amount of each component.Under the condition of 625 N·hm-2,environmental factors were better able to meet the growth requirements of P.sylvestris var.mongolica plantations during the mature period.
The conversion from old to new kinetic energy is the key path to achieve the goal of"double carbon".It is particularly important to scientifically measure and evaluate driving forces in the conversion from old to new kinetic energy and clarify the influencing factors.Using entropy value method,spatial autocorrelation model,GWR model,the spatio-temporal characteristics of the conversion from to new kinetic energy the old to new kinetic energy conversion in Shandong Province are described,and its influencing factors are analyzed.The main findings are as follows:1)The comprehensive index of conversion from old to new kinetic energy for whole province has risen steadily,and that of 16 cities in the province also presents the overall upward trend,which can be roughly divided into three stages:fluctuations rise,steadily rising,and rising.2)There is obviously spatial differentiation in the old to new kinetic energy conversion in Shandong Province,and the overall spatial pattern shows that the level in central region is significantly higher than that in the west and south,and Jinan and Qingdao are always the high value centers.3)From the perspective of influencing factors,there are significant differences in the influence of different factors on the old to new kinetic energy conversion in different periods.
By using Scenic Beauty Estimation(SBE)method,GIS analysis technology and comprehensive evaluation method,this study evaluates the landscape quality of the typical landscape in Koktokay Global Geopark,and compares the evaluation results.The results show that:1)SBE method is a psychophysical model to measure the aesthetic judgment of the landscape,and the subjective aesthetic judgment of tourists,which can reflect the aesthetic degree of the scenery.The GIS method quantifies the landscape feature data objectively and reflects the landscape feature from the macro scale.Therefore,the former will have certain errors when evaluating the landscape that is completely composed of geological phenomena with small volume,small fluctuation and long distance,while the latter is more suitable for evaluating the landscape of large scale and wide range.2)The comprehensive evaluation method combined with both subjective and objective factors is more comprehensive and inductive,which can better reduce the deviation of visual landscape quality evaluation results by a single method.3)Different landscape types have their own advantages when using SBE or GIS evaluation methods.The comprehensive evaluation method is more favorable for landscape evaluation of tourist scenic spots with diverse landscape types,rich causes and complex structure.In the actual application process,we can select the method that conforms to the landscape type evaluation according to the evaluation objective,to give full play to its maximum effectiveness and improve the scientific nature of landscape visual quality evaluation.
To provide theoretical basis for vegetation restoration in Taihang Mountain,the study measured branch and leaf functional traits and discussed adaptation strategies of Vitex negundo,Grewia biloba and Ziziphus jujuba.The hydraulic architecture of stems from perennial shoots were determined,including sapwood specific hydraulic conductivity,leaf specific hydraulic conductivity,Huber value and drought induced cavitation.In addition,Leaf thickness,specific leaf area,leaf size,leaf water potential,and the diurnal transpiration rate and stomatal conductance were also measured.Vessel and pit traits were determined by light microscopy and scanning electron microscopy.Results showed that:1)The hydraulic weighted vessel diameters and pit density of V.negundo are significantly higher than those of G.biloba and Z.jujuba,therefore V.negundo shows higher water transport efficiency,and also V.negundo exhibits higher stomatal conductance and transpiration rate,which reflects a rapid resource acquisition adaptive strategy.2)G.biloba has lower hydraulic weighted vessel diameter and specific hydraulic conductivity,and leaf thickness is significantly higher than that of V.negundo and Z.jujuba,and the specific leaf area is significantly lower than that of V.negundo and Z.jujuba,reflecting a relatively conservative resource acquisition strategy.3)Z.jujuba exhibits the lowest hydraulic weighted diameter and specific hydraulic conductivity of vessels,while it shows the strongest ability to resistant drought induced cavitation,as well as the largest daily variation of leaf water potential,and can tolerate lower water potential.In addition,the specific leaf area of Z.jujuba is significantly higher than that of V.negundo and G.biloba,and also it exhibits higher stomatal conductance and transpiration rate,indicating that it has a strong carbon harvesting ability.Three shrub species exhibit different functional traits,indicating diversified adaptation strategies.They occupy different ecological niche,and thus they can better adapt to the stress environment in Taihang Mountain.
