The characteristics of vertical and horizontal variations of lead element(Pb) in soil plant system of vertical zone in Changbai Mountain National Nature Reserve(CNNR) were studied. The results showed that Pb concentr...The characteristics of vertical and horizontal variations of lead element(Pb) in soil plant system of vertical zone in Changbai Mountain National Nature Reserve(CNNR) were studied. The results showed that Pb concentrations in soils of vertical zone are all above 25 mg/kg, and the average Pb concentration of each soil zone negatively correlates its degree of variation, i.e. brown coniferous forest soil zone has the lowest average Pb concentration of four soil zones, and the highest horizontal variation; however, mountain soddy forest soil has the highest average Pb concentration, and the lowest horizontal variation; the average concentration of plant Pb of each plant zone is lower than the worldwide average level of Pb in plant(Clarke), respectively, and plant Pb content order is consistent with soil Pb content order, but their horizontal variations are different from those in soil zones, the variation of mountain tundra forest zone is highest, but Betula ermanii forest zone the lowest. Vertical variation of plant Pb is obviously higher than that in soils with variation coefficient of 89.76%; the enrichment capability of plant for Pb is depended on the plant types and the different organs of plant; parent material and parent rock, pH values, soil organic matter and soil particle fraction etc. are the main factors influencing variations of Pb content in soil plant system of vertical zone in CNNR.展开更多
功能区划作为自然保护区进行科学布局和功能定位的重要手段,旨在促进生态系统服务功能的协同发挥。运用Marxan with Zones模型方法,将生态系统服务权衡分析纳入到安徽升金湖国家级自然保护区的功能区划研究,并展开情景模拟,得出不同生...功能区划作为自然保护区进行科学布局和功能定位的重要手段,旨在促进生态系统服务功能的协同发挥。运用Marxan with Zones模型方法,将生态系统服务权衡分析纳入到安徽升金湖国家级自然保护区的功能区划研究,并展开情景模拟,得出不同生态系统服务保护目标下的功能区划方案。结论如下:(1)保护区的上湖区域及其周边河流入湖区域的生物多样性和防洪蓄水价值较高;东南部林地区域的水源涵养与碳储存价值较高,食物生产价值从西北部到东南部逐渐降低;社会文化价值较高的区域主要是沿湖地带。(2)生态系统服务之间存在不同程度的权衡/协同关系,其中,生物多样性作为关键生态系统服务,与其它生态系统服务之间存在显著的权衡/协同关系,根据相关性系数大小可分为高协同关系(防洪蓄水)、低协同关系(水源涵养和社会文化)与权衡关系(碳储存和食物生产)。(3)生态系统服务权衡关系视角下的不同保护目标分配得到的功能区划情景均表现出核心区面积大幅增加的特征。此外,高协同情景下的功能区划更能兼顾多种生态系统服务,且对不同典型珍稀濒危鸟类的保护强度更大,能够总体上改善生态系统服务之间的权衡关系,提升生物多样性与防洪蓄水和水源涵养的协同关系,并降低与碳储存的权衡关系。展开更多
基金WetlandInnovationItemofChineseAcademyofSciences (No .ZKHZ 3 0 6 )
文摘The characteristics of vertical and horizontal variations of lead element(Pb) in soil plant system of vertical zone in Changbai Mountain National Nature Reserve(CNNR) were studied. The results showed that Pb concentrations in soils of vertical zone are all above 25 mg/kg, and the average Pb concentration of each soil zone negatively correlates its degree of variation, i.e. brown coniferous forest soil zone has the lowest average Pb concentration of four soil zones, and the highest horizontal variation; however, mountain soddy forest soil has the highest average Pb concentration, and the lowest horizontal variation; the average concentration of plant Pb of each plant zone is lower than the worldwide average level of Pb in plant(Clarke), respectively, and plant Pb content order is consistent with soil Pb content order, but their horizontal variations are different from those in soil zones, the variation of mountain tundra forest zone is highest, but Betula ermanii forest zone the lowest. Vertical variation of plant Pb is obviously higher than that in soils with variation coefficient of 89.76%; the enrichment capability of plant for Pb is depended on the plant types and the different organs of plant; parent material and parent rock, pH values, soil organic matter and soil particle fraction etc. are the main factors influencing variations of Pb content in soil plant system of vertical zone in CNNR.
文摘功能区划作为自然保护区进行科学布局和功能定位的重要手段,旨在促进生态系统服务功能的协同发挥。运用Marxan with Zones模型方法,将生态系统服务权衡分析纳入到安徽升金湖国家级自然保护区的功能区划研究,并展开情景模拟,得出不同生态系统服务保护目标下的功能区划方案。结论如下:(1)保护区的上湖区域及其周边河流入湖区域的生物多样性和防洪蓄水价值较高;东南部林地区域的水源涵养与碳储存价值较高,食物生产价值从西北部到东南部逐渐降低;社会文化价值较高的区域主要是沿湖地带。(2)生态系统服务之间存在不同程度的权衡/协同关系,其中,生物多样性作为关键生态系统服务,与其它生态系统服务之间存在显著的权衡/协同关系,根据相关性系数大小可分为高协同关系(防洪蓄水)、低协同关系(水源涵养和社会文化)与权衡关系(碳储存和食物生产)。(3)生态系统服务权衡关系视角下的不同保护目标分配得到的功能区划情景均表现出核心区面积大幅增加的特征。此外,高协同情景下的功能区划更能兼顾多种生态系统服务,且对不同典型珍稀濒危鸟类的保护强度更大,能够总体上改善生态系统服务之间的权衡关系,提升生物多样性与防洪蓄水和水源涵养的协同关系,并降低与碳储存的权衡关系。