Fuzzy Synthetic Evaluation of Wetland Soil Quality Degradation:A Case Study on the Sanjiang Plain,No

来源 :Pedosphere | 被引量 : 0次 | 上传用户:hjwuser
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Wetland soil quality degradation caused by large-scale agricultural reclamation on the Sanjiang Plain of Northeast China has been widely reported. A relative soil quality evaluation (RSQE) model and a projection pursuit evaluation (PPE) model based on real-coded accelerating genetic algorithm were introduced to evaluate quality variations in top layers of the main wetland soils on the Sanjiang Plain in 1999 and 2003, respectively. As soil quality degradation boundaries were vague, this study established two fuzzy synthetic evaluation (FSE) models based on the original data and criteria used in the RSQE and PPE models. The outputs of the two FSE models were obtained by choosing two fuzzy composite operators M(∧, ∨) and M(·, ⊕). Statistical analysis showed that the results of the FSE, RSQE, and PPE models were correlated. In particular, outputs of the FSE model using M(·, ⊕) were significantly correlated with those of the RSQE model with r = 0.989 at P < 0.01. Compared with RSQE and PPE models, the FSE model may be more objective in showing soil quality variations and was closer to the natural situation, showing the feasibility and applicability of the FSE model in evaluating soil quality degradation. However, the choice of composite operator was of critical importance. The study of wetland soil quality degradation on the Sanjiang Plain was of scientific and practical significance for protection and management of soils and for sustainable development of agriculture in this area in the future. Wetland soil quality degradation caused by large-scale agricultural reclamation on the Sanjiang Plain of Northeast China has been widely reported. A relative soil quality evaluation (RSQE) model and a projection pursuit evaluation (PPE) model based on real-coded accelerating genetic algorithm were introduced to evaluate quality variations in top layers of the main wetland soils on the Sanjiang Plain in 1999 and 2003, respectively. As soil quality degradation boundaries were vague, this study established two fuzzy synthetic evaluation (FSE) models based on the original data and criteria The outputs of the two FSE models were obtained by choosing two fuzzy composite operators M (∧, ∨) and M (·, ⊕). Statistical analysis showed that the results of the FSE, RSQE, and In particular, outputs of the FSE model using M (·, ⊕) were significantly correlated with those of the RSQE model with r = 0.989 at P <0.01. Compared with RSQ E and PPE models, the FSE model may be more objective in showing soil quality variations and was closer to the natural situation, showing the feasibility and applicability of the FSE model in evaluating soil quality degradation. However, the choice of composite operator was of critical importance. The study of wetland soil quality degradation on the Sanjiang Plain was of scientific and practical significance for protection and management of soils and for sustainable development of agriculture in this area in the future.
其他文献
我们家的成员个个都是运动迷,来,我给你们一一介绍吧!足球迷——爸爸爸爸是一个铁杆儿足球迷,他会时不时地提起他那只足球。哎呀,爸爸又开始说他的足球了:“这只球可宝贵了,
综合实践活动是一门室内与室外相结合的学科,要想真正发挥其作用、展现其魅力,一定要以教材为媒介,以新奇为导向,引领学生走入生活,培养学生们在生活中捕捉信息的能力,培养他
受课文《新型玻璃》的启示,小作者根据现实生活,展开大胆的想象,传递了人们的心愿,玻璃革命的到来将会让人们受益无穷。文章中的小标题新颖独特,而且与内容呼应。 Inspired
“唉!唉!唉……”书房里传来老妈接二连三的叹气声。瞧,我的“股迷”老妈又开始唉声叹气了。不用说,肯定是她的“心肝宝贝”——股票又不如意了。不知从什么时候起,老妈开始
在英国威尔特郡的埃夫伯里庄园,一幅新的“麦田怪圈”出现了。那是一个庞大的圆圈包裹着一幅非常精美的六角形雪花图案,让人匪夷所思的是圆圈内边出现了一些棱形边角。联合国
湘政办发[2000]8号各市、州、县人民政府,省直机关各单位:经省人民政府同意,现将省公安厅《关于开展公民身份号码编制工作的意见》转发给你们,请认真贯彻执行。 Xiangzheng
学校的后操场旁边有一棵高大的桂花树。每当桂树开花时,甜甜的香味就会弥漫着整个校园,沁人心脾。我经常和同学们在后操场上打篮球、扔沙包、骑自行车……每当看到别人骑着自
我是一个天生爱吃鱼的人,三天不吃,就感觉浑身难受。要说吃鱼,我可是个“高手”。我知道什么鱼头营养多、什么鱼尾骨头多,还知道鱼身上最美味的地方是鱼肚上的那块肉,而且是
一天,兔爸爸对小白兔说:“乖儿子,给爸爸帮个忙吧,家里没有菜了,给你20元,你照着这张清单到对面的超市跑一趟吧。”小白兔高高兴兴地来到超市,拿着清单对照着,嘴里还念叨着:
红绿灯是马路上的信号灯,他总是站在马路旁边,指挥着来来往往的汽车和行人,可神气了!不管是刮风下雨,还是严寒酷暑,他都坚守着岗位。 Traffic lights are the traffic light