No.31small watershed based on plant was affected people's interfere more and faced more environment effect. Watershed system instructive intend irrationality, and function misadjust, and health general; 3 No.34 small watershed based on woodland was affected people's interfere less and faced less environment effect.

以耕地為主的小流域31受到人類活動(dòng)干擾的影響大自拍亚洲国产，面臨的外界壓力大欧美日韩国内，在強(qiáng)大的外界壓力作用下美女黄片视频免费观看，流域生態(tài)系統(tǒng)的內(nèi)部結(jié)構(gòu)傾向不合理东北老处女人69xxxx，功能嚴(yán)重失調(diào)，恢復(fù)能力差无码A片日韩毛片精品，變化大国产一区午夜福利在线播放，目前健康狀態(tài)一般，但如果不進(jìn)行科學(xué)的利用和保護(hù)国产成人中文激情小说网站在线观看，土壤肥力將進(jìn)一步下降人人摸人人舔人人爽，最終將會(huì)嚴(yán)重影響國民經(jīng)濟(jì)的發(fā)展，人民生活水平的提高天天人人夜夜操。