Furthermore , the content of na + and cl - in the leaves was positively correlated with the electrolyte leakage an d the content of mda of leaves , and the correlation levels of the content of na + and cl " and the electrolyte leakage are significant 并且，菊芋幼苗叶片中na ~ + 、 cl ~ -含量的增加与电解质渗透率和丙二醛含量增大均呈正相关，其中电解质渗透率的增大与na ~ + 、 cl ~ -含量的增加达到显著水平。
For the relationships between zoobenthos and environmental factors , results showed that zoobenthic standing crops were positively correlated with submersed aquatic macrophytes , total phosphorus and total nitrogen contents but were negatively correlated with depths and secchi disk transparencies 环境分析表明底栖动物总的现存量与水草生物量、总磷总氮含量均正相关，与水深、透明度均负相关。
Using the data of 1176 listed corporations in china , our empirical study demonstrates that internal stock ownership is negatively correlated with the scales of boards of directors , and external shareholders ' supervision positively correlated with the scales of boards of directors 利用2004年1176家中国上市公司样本的实证研究表明，控股程度与董事会规模负相关，外部大股东的监督行为与董事会规模正相关。
Through an analysis of the scale and structure of government input and the growth of agriculture production , this paper suggests that the two am positively correlated , and that different input structures result in different marginal outputs 本文通过对政府农业投入的规模、结构和农业生产增长关系的实证分析，发现政府的农业投入规模对农业生产增长有极强的正相关性，而且不同的投资结构所产生的边际产量不同。
According to the literatures , epa mainly derives from cryptophyta and bacillariophyta in water bodies . our results suggest that the concentration of epa is positively correlated with the abundance of cryptophyta only rather than with that of bacillariophyta and other algae 在水体中epa主要来源于隐藻和硅藻，从本结果看，水体epa浓度只与隐藻的细胞密度呈较高的正相关，而与硅藻和其它藻类相关性不太明显。
The results showed that there were siginificant differences at leaf temperature , grain yield and wue for different wheat genotypes under two planting models , yield ' s wue was signify candy and positively correlated with transpiration rate and photosynthetic rate 结果表明，不同基因型供试品种的叶片温度、籽粒产量和水分利用效率在两种栽培模式下存在显著差异，产量水平的水分利用效率与光合速率和蒸腾速率呈显著正相关。
Income of farm household in major grain producing areas is positively correlated with educational level of farm workers , unit grain yield , seeded area of quality grain varieties , and the investment capacity of farm households , and negatively correlated with work time of farm households 摘要粮食主产区农户家庭收入与农户家庭劳动力受教育水平、粮食单产、优质粮食品种播种面积、农户家庭投资能力呈正相关，与农户家庭农业劳动时间呈负相关。
The first axis of dca ordination reflects a synthetic environmental gradient , positively correlated with precipitation , humidity , heating , primary productivity , and potential evaporation etc . the second axis of dca represents changes in altitude and longitude Dca排序第一轴表现了一个综合的环境梯度，即从左到右，降水、湿度、热量、初级生产力、潜在蒸发量逐渐增强， dca第二轴反应了海拔和经度的变化，即从上到下，海拔降低、经度增加。
The results showed that the capability of reaumuria soongorica in seed actual reproduction and artificial restoration was positively correlated with disturbance levels ; the capability of restoration varied with the characteristics of disturbance factors , of which water was the key factor 结果表明，红砂种子更新恢复能力与干扰水准呈正相关；干扰因数的特徵不同，则更新恢复能力不同；尤其水分因数参与对红砂种群的自然更新与人工辅助恢复起著关键性的作用。
In the fourth chapter , we find that stock market indexes are positively correlated with economic indexes and the economic variables are the granger courses of stock price fluctuation . in this chapter , levine ' s theory about stock market function for facilitating economic growth is tested using the data of china 通过实证检验，一方面证实了股市行情对宏观经济和货币供应量等指标具有明确的反映;另一方面从因果关系方面说明宏观经济和货币政策是股市行情变化的原因，而股市对宏观经济有影响，但作用尚不明显。
