[Objective] The land use patterns and carbon storage distribution in Handan City during the recent20 years were analyzed,and the trends in land use changes under an ecological protection policy duirng the next 10 years were determined,in order to provide evidence for both increasing urban carbon sinks and realizing sustainable urban development.[Methods] Based on the PLUS model,natural and social driving factors were selected to analyze land use change patterns in Handan City in 2030 under the scenarios of natural development and ecological protection from 2000 to 2020.Carbon storage was also evaluated by the InVEST model in Handan City from 2000 to 2030.[Results]（1）The spatial distribution of land use types in Handan City showed the characteristics of ’woodland in the west and cultivated land in the east’.The land use transfer between cultivated land and artificial habitats accounted for 96.58% of the total land use change.（2）The spatial distribution of carbon density was characterized as "high in the west and low in the east" in Handan City.Carbon storage decreased over time.Excessive encroachment of cultivated land led to a dramatic increase in carbon loss in Handan City in 2010.Excessive encroachment of cultivated land was the main cause of carbon loss in Handan City.（3）Compared with the natural development scenario,land use change under an ecological protection scenario tended to be restrained.Although the potential for ecological land improvement was average,consumption of ecological resources was avoided due to limited human activities.（4）Under both the natural development and ecological protection scenarios,carbon storage from 2020 to 2030 in Handan City was simulated to decrease by 4.23 × 10~6 t and increase by 2.16 × 10~4 t,respectively.The risk of carbon loss was significantly reduced across the city,and the potential of carbon sinks in different areas of the city appeared to differ significantly.[Conclusion] The encroachment of cultivated land was the main cause of carbon loss over time.Implementation of ecological protection policies significantly reduced the risk of carbon loss in each district and county,and there are obvious differences among different districts and counties.Carbon loss was more likely to occur in the east-central plain region,while the districts and counties at the eastern foot of the Taihang Mountain in the southwest had strong carbon sink potential,so a flexible plan should be made according to location differences.

近年来,邯郸各地陆续兴起"凤丹"(Paeonia ostii T.Hong et J.X.zhang)种植.为指导当地生产,2018年邯郸市林业局对"凤丹"牡丹结果特性和丰产性进行了研究,结果显示,"凤丹"牡丹单株分枝数与果荚数呈极显著正相关,分枝数、果荚数与单株产量呈极显著正相关,可用分枝数预估果荚数,进而预估单株产量;百粒重与单株产量呈正相关,提高百粒重在一定程度上可提高单株产量.通过间作和纯作对比试验初步得出,在株行距不变的前提下,2种模式单株产量在0.01水平差异不显著,单位面积产量在0.01水平差异不显著.5年生"凤丹"产籽量2536.5 kg/hm2,与5年生核桃(Juglans regia)间作,综合收益可达79080元/hm2,生态效益和经济效益显著,值得在生产中推广.该研究对推进当地油用牡丹产业发展有重要意义.

对邯郸市果树春季冻害特征进行观测分析,得出结论:重灾区主要分布在山谷底部或地势低洼地带;严重受冻的核桃雄花序全部变黑,梨花子房内变黑,丧失结果功能;灾后及时采取措施,可将受灾较轻果园的损失降到最低,但对绝产果树作用不大,防灾减灾重在预防.

2016年邯郸市林业局引进“凤丹”牡丹(Paeonia ostii T.Hong et J.X.zhang)进行驯化、栽培等试验.通过连续2年观测和统计,“凤丹”牡丹在邯郸适应性良好,成活率、保存率均达到85％以上,物候期相对山东菏泽市稍有延后,产量和收益随苗龄的增长逐年增加,生态效益和经济效益显著,适宜在邯郸各地推广.关于“凤丹”特丹稳产丰产的最佳条件和模式还需进一步深入研究.

In recent years, meteorological disasters have become more frequent, late spring coldness could happen every year.It is immeasurable damage to the farmers.This paper investigated and analyzed the occurrence regularity of frostbite in the flowering stage and young fruit stage of pear tree in Wei county.The results showed that the morethe temperature was the higher in the early stage, the more the frost damage was the heavier, the more the low temperature appeared the later, the more the harm was serious.The early warning index of frostbite of pear tree in Wei county was determined (severe cold freezing damage:TD≤-2 ℃, low temperature frost damage:-2 ℃＜TD≤0 ℃, low temperature cold damage:0 ℃＜TD≤2 ℃;flowering severe frost damage:80％≤freezing rate＜100％, moderate freezing damage:30％＜freezing rate＜80％, mild freezing damage:0＜freezing rate≤30％;150 cm on the ground is the dividing line, and the upward frostbite gradually becomes lighter and downward frostbite gradually becomes heavier; Low temperature tolerance:calyx＞petal＞stamen＞pistil;branch＞flower＞young fruit;The freezing rate of the pear tree fruit, the black heart rate, does not directly indicate the loss of annual production, can only be used as an estimate of the disaster rate.

In this paper,taking comprehensive treatment planning of Zhizhang River in Handan as a case study,it discusses how to restore a good dynamic balance of the natural urban waterfront landscape,how to continue and regenerate the historic features of the cultural landscape and cultural connotations.Besides,it also cites specific measures of the case,such as combining cultural landscape and ecological communities to form the sustainability of the landscape,so as to make the city's waterfront landscape exude continuing charm.

Taking the landscape design of Donghuan road in Handan City as an example,this paper discusses the design techniques of plant-based city road landscape Through the overall arrangement of plants and collocation which assorted with the environment and function,the landscape image of city road has been strengthened and humanized space has been also constructed,so as to achieve the compatibility of ecosystem,traffic function and sustainable development.

指出了树木作为园林的重要组成部分,具有能美化环境,陶冶情操等功用,探讨了园林绿化树木对大气污染的净化机理和指示机理,并归纳了园林绿化中具有较强净化和指示作用的树种,以期为园林绿化树种选择提供依据。

Park embodies the urban landscape level.The overall planning of Longhu park in Handan City was elaborated,the new ideas and new techniques on urban parks planning were initially discussed.The planning laid stress on plant landscaping and natural lanscape form harmony of modern and traditional aspects.