杨桃树小流域综合治理效益分析

来源 :人民珠江 | 被引量 : 0次 | 上传用户:liubin523
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
杨桃树小流域是珠江流域水土保持小流域综合治理试点,经6年多(1984~1989)的综合治理,达到了初步治理标准。自然面貌、社会经济条件都发生了显著的变化,由以农业为主的单一经营,逐步变为农、林、牧、副全面发展的多种经营,生态环境有所改善,群众的生产和生活水平有了提高,为开展小流域综合治理提供了经验。
其他文献
A case of esophageal Crohn's disease in a 52-year-old man is described.The patient was treated successfully by surgical excision of the esophagus.Because es
In this study,we investigated the effect of captopril (CPT) on glomerular filtration rate (GFR),effective renal plasma flow(ERPF),filtration fraction(FF),urinar
Objective The coronaryanatomic feature and development after thrombolysis in acute myocardial infarction (AMI) were studied. Mehtods 100 patients with AMI recei
目的:研究血液病患者化疗后发生败血症的特点、原因、预后及治疗。方法:回顾性分析68例化疗后发生败血症的血液病患者的病原学特点、感染部位、发病相关因素及转归。结果:化
An immunocytochemical study was performed in 6 peripheral nerve specimens from 6 cases of polymyositis.The results revealed that depositions of IgG,IgM,IgA and
针对枣DNA提取须用幼嫩叶片或组织培养幼苗这一限制相关实验顺利进行的问题.对常用的DNA提取方法CTAB法进行了改良,在破碎细胞之后,先加入2%β巯基乙醇,3%PVP,100mmol/LEDTA以去除成
目的:研究高糖刺激肾小球系膜细胞后,凋亡相关基因Bcl-2、Smac、Fas的表达情况。方法:将体外培养的大鼠肾小球系膜细胞分为正常对照组(糖浓度为5.6 mmol/L)和高糖组(糖浓度为
Objectives To investigate the effect of electrical stimulation during absolute refractory period on contraction and relaxation of ventricular myocytes from no
The aim of this study was to determine the time course of changes in extracellular fluid(ECF) concentrations of purines,amino acids,monoamines,and their metabol
Objectives. To understand and grasp the diagnosis and treatment of chylothorax caused by various reasons. Method. The treatment results of 31 cases of chylothor