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widespread areas of China are mainly distributed in Liaodong Bay to the north Gulf coast. Southeast coast of the main typhoon storm surge, which the Yangtze River estuary, mouth of the Qiantang River,UGGs Boots on sale, the Pearl River Delta,UGGs Bailey Button Sale, Taiwan, Hainan and other places most severely affected.

human factors on the impact of floods

☆ China's Yangtze River Hydrological disasters and reasons: (for details see through wet areas, river basin wide tributary of the many long rainy season,UGGs Bailey Button Sale, large amount of water ② (terrain aspect) terrain dominated by the plain, flat,UGGs in stores, the middle does not have enough flood,UGGs in Stores Canada, flood detention place, middle and lower river flood capacity deficiencies. Human factors ③ deforestation upstream, midstream reclaim the land, build buildings occupy the lower reaches of the river embankment ④.

control measures: ① in the upper reaches of afforestation and grass, forest protection, to create the upper reaches of the Yangtze River in the shelter system,UGGs Boots on sale, the construction of the reservoir; ② Jingjiang River and other river levee reinforcement,UGGs in stores, returning farmland to lakes, flat flood embankments; ③ Remove the river occupied buildings, water conservation and rational utilization of land; ④ the use of remote sensing and geographic information systems for monitoring and forecasting and early warning, dynamic monitoring; ⑤ improve disaster planning and disaster prevention legislation and strengthen disaster management and public education for disaster reduction; ⑹ develop disaster contingency plans.

(d) of disease, insect and rodent infestation and other biological hazards

1. Disease

disease

type of crop diseases are common: blast,UGGs Bailey Button, wheat rust,UGGs on Sale,Moncler sale,UGGs Bailey Button, fusarium wilt of cotton, tobacco,UGGs Bailey Button Sale, anthrax, etc.

common forest diseases are: bad skin disease of poplar,UGGs Boots on sale, pine blister rust, soluble leaf disease,UGGs Bailey Button Sale, paulownia witches' broom disease.

disease occurs because: A. Climate variability and other adverse environments makes the crop resistant to the disease reduced.

B. Popular exotic disease pathogens is the main reason.

diseases that harm crops, trees,UGGs in stores, infected or dead trees to wither, leading to large areas of agricultural land, forests have been destroyed. Not only caused large-scale crop production,UGGs Bailey Button Sale,Moncler sales,UGGs Bailey Button, even crops; also led to deterioration of large quantities of agricultural products, causing serious economic losses.

features many kinds of crop pests and diseases in China, against big,UGGs for Cheap, heavy disaster in the east west.

several of the most damaging pests of crops and their distribution ① rust (including stripe rust,UGGs in stores, leaf rust and stem rust) - is the most widely taken place in China,UGGs in stores,wholesale Moncler, against the most serious category of wheat diseases in The wheat area have occurred.

② rice disease: mainly distributed in the Qinling - south of the Huaihe River rice-producing areas

③ bollworm: widely distributed in the cotton producing areas in China (the Yellow River basin and the most serious areas of Xinjiang )

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