The cognition and attitudes of resources environment affect environmental behavior of behavior subject,the changes of attitude and behavior become one of the key factors of influencing harmonious and healthy developme...The cognition and attitudes of resources environment affect environmental behavior of behavior subject,the changes of attitude and behavior become one of the key factors of influencing harmonious and healthy development of ecological environment. With PRA survey method for obtaining questionnaire data and based on behavior geography and social psychology theory,farming-pastoral,dry grassland,desert grassland, typical project village alpine grassland of returning fazing land to grasslands as an example,with main body cognitive perspective of the aid of resources,the article analyzed space dissimilation of stakeholders environmental cognitive and behavior preference response in the area of returning grazing land to grasslands from ecological environment from policy environment,ecological environment and family economic environment aspects. The results showed that： stakeholders judgment of Grassland degradation in different ecological function area had obvious regularity,the cognitive proportion of Grassland degradation gradually increase from farming-pastora to alpine savanes. The satisfaction from returning grazing land to grasslands showed a changing tendency of reversed U. stakeholders had more strongly negative cognition in the area of dry steppe and desertsteppe. From farming-pastoral to alpine savanes,the economic environment tend to worse situation. Negative environmental behaviors tend to increase,Positive behavior on the contrary.展开更多
植物功能性状之间的关联性是其提高自身空间资源利用能力的一种生境适应策略,反映了植物对环境变化的响应途径和机制。本文采用标准化主轴估计(standardized major axis estimation,SMA)方法,对洮河护岸林全光、林隙、林冠下3种生境下沙...植物功能性状之间的关联性是其提高自身空间资源利用能力的一种生境适应策略,反映了植物对环境变化的响应途径和机制。本文采用标准化主轴估计(standardized major axis estimation,SMA)方法,对洮河护岸林全光、林隙、林冠下3种生境下沙棘(Hippophae rhamnoides L.)叶干重与叶厚度、叶面积关系进行了研究。结果表明:随着光照强度的减弱,植物群落的土壤含水量逐渐增加,光合有效辐射(PAR)逐渐降低,沙棘种群高度、郁闭度以及叶面积(LA)、叶厚度(LT)、叶干重(LDW)、蒸腾速率(T_(r))和气孔导度(G_(s))逐渐增加,比叶面积(SLA)逐渐减小;3种生境中沙棘的LDW与LA、LT呈现出不同的生长关系(P<0.05),全光环境沙棘LDW与LT、LA分别呈异速生长和等速生长关系,LDW的增加速度大于LT的生长速度,林隙中沙棘LDW与LA、LT均呈等速生长关系,林冠下沙棘LDW与LA、LT呈异速和等速生长关系,LA生长速率大于LDW的增加速率。生长在全光和林冠生境下的沙棘分别选择了小而薄和大而厚的叶片,体现了植物适应异质性光照环境的叶片功能性状投资权衡机制。展开更多
基金Supported by the National Natural Science Fund(40971039)Gansu Province Science and Technology Support Program(1011FKCA157)the Fundamental Research Funds Project of Colleges and Universities in Gansu Province
文摘The cognition and attitudes of resources environment affect environmental behavior of behavior subject,the changes of attitude and behavior become one of the key factors of influencing harmonious and healthy development of ecological environment. With PRA survey method for obtaining questionnaire data and based on behavior geography and social psychology theory,farming-pastoral,dry grassland,desert grassland, typical project village alpine grassland of returning fazing land to grasslands as an example,with main body cognitive perspective of the aid of resources,the article analyzed space dissimilation of stakeholders environmental cognitive and behavior preference response in the area of returning grazing land to grasslands from ecological environment from policy environment,ecological environment and family economic environment aspects. The results showed that： stakeholders judgment of Grassland degradation in different ecological function area had obvious regularity,the cognitive proportion of Grassland degradation gradually increase from farming-pastora to alpine savanes. The satisfaction from returning grazing land to grasslands showed a changing tendency of reversed U. stakeholders had more strongly negative cognition in the area of dry steppe and desertsteppe. From farming-pastoral to alpine savanes,the economic environment tend to worse situation. Negative environmental behaviors tend to increase,Positive behavior on the contrary.
